INATURALIST Observations 312795157
Rioverde, San Luis Potosi: 21.962746, -99.937774: : 8/21/2025: Alvaro Monter Pozos: 21 Aug 2025 ; Coordinate Uncertainty in Meters: 10034.00000.

INATURALIST Observations 106448908
Victoria, Tamaulipas: 23.725997, -99.125943: : 2/9/2022: Luis Humberto Velez H.: 9 Feb 2022 ; Coordinate Uncertainty in Meters: 227.00000.

INATURALIST Observations 241532107
Gomez Palacio, Durango: 25.593521, -103.481529: : 9/13/2024: Aurora Salda├▒a ≡ƒç▓≡ƒç╜: 13 Sep 2024 ; Coordinate Uncertainty in Meters: 651.00000.

Garcia, Nuevo Leon: 25.719824, -100.606005: : 5/1/2022: Mauricio L: 1 May 2022 ; Coordinate Uncertainty in Meters: 372.00000.

Viesca, Coahuila: 25.453131, -102.943054: : 7/6/2023: Eric Centenero Alcal├í: 6 Jul 2023 ; Coordinate Uncertainty in Meters: 122.00000.

Viesca, Coahuila: 25.448349, -102.937837: : 7/6/2023: Eric Centenero Alcal├í: 6 Jul 2023 ; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 4400347686; Occurrence Remarks: Very unusual Tantilla. IÆm originally thought it was a T gracilis with aberrant coloration. Very red with a stark white ventral that comes up nearly to the lateral midline of the body. Never seen anything like it out of the 50+ gracilis/nigriceps IÆve seen in the RGV.;; Coordinate Uncertainty in Meters: 49106.00000.

Viesca, Coahuila: 25.434267, -102.911523: : 7/6/2023: Eric Centenero Alcal├í: 6 Jul 2023 ; Coordinate Uncertainty in Meters: 122.00000.

Reynosa, Tamaulipas: 25.760303, -98.549161: : 1/29/2020: Carolina Maga├▒a: 29 Jan 2020 ; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 1453180195;; Coordinate Uncertainty in Meters: 22.00000.

Occurrence Remarks: Individuo encontrado en matorral, bajo tierra, a unos 20 cm de profundidad aprox.; Coordinate Uncertainty in Meters: 2064.00000.

GBIFID: 910495050;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2429531257;; Coordinate Uncertainty in Meters: 5.00000.

Camargo, Tamaulipas: 26.085545, -98.835422: : 1/10/2020: Alejandro Navarro: 10 Jan 2020 ; Coordinate Uncertainty in Meters: 99.00000.

Tlahualilo, Durango: 26.567329, -103.961585: : 5/21/2019: ManuelRdz: 21 May 2019 ; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2596130858; Occurrence Remarks: Crossing road.;; Coordinate Uncertainty in Meters: 29845.00000.

GBIFID: 1088919449; Occurrence Remarks: Plains blackhead; under large rock in slightly lower area. East foundation ranch, south Texas. Day 2 site 1.;; Coordinate Uncertainty in Meters: 10000.00000.

Jim Hogg, Texas: 26.802763, -98.855172: : 4/8/2026: David Heckard: 8 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1453055371; Occurrence Remarks: AOR;; Coordinate Uncertainty in Meters: 10.00000.

Jim Hogg, Texas: 27.1815, -98.61563: : 5/16/2026: Elizabeth Walker: 16 May 2026 ; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 2239048291; Occurrence Remarks: My daughter found this snake in our living room (Heres a worm, mom!);; Coordinate Uncertainty in Meters: 232.00000.

Brewster, Texas: 29.322405, -103.20787: : 5/20/2026: Kat_Lentz: 20 May 2026 ; Coordinate Uncertainty in Meters: 9.00000.

GBIFID: 1265565771; Occurrence Remarks: Mayra;; Coordinate Uncertainty in Meters: 0.11000.

Chihuahua, Chihuahua: 28.680278, -106.137778: : 7/24/2020: Priscila: 24 Jul 2020 ; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571174924; Occurrence Remarks: Road cruised with RLS.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1571174217; Occurrence Remarks: RLS 012, AOR;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 5139946785; Occurrence Remarks: Huge tantilla, just shy of 22in;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1453080815; Occurrence Remarks: Found under a rock, cloudy, 70F;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3335562375; Occurrence Remarks: Under wood.;; Coordinate Uncertainty in Meters: 31.00000.

Occurrence Remarks: 10.5 length. Road-killed. Position on shoulder suggests intentional, but snake is small so maybe inadvertent. iPhone photos & entry by CP.; Coordinate Uncertainty in Meters: 3.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 29173.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 4165437042; Occurrence Remarks: 94┬░;; Coordinate Uncertainty in Meters: 4.00000.

Lea, New Mexico: 32.605079, -103.314424: : 5/5/2026: austiinfrankliin: 5 May 2026 ; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 3859412123; Occurrence Remarks: weird pattern on the head;; Coordinate Uncertainty in Meters: 29146.00000.

Occurrence Remarks: Was longer than 7 inches.; Coordinate Uncertainty in Meters: 19.00000.

Lea, New Mexico: 32.874921, -103.266923: : 5/8/2026: austiinfrankliin: 8 May 2026 ; Coordinate Uncertainty in Meters: 29039.00000.

GBIFID: 3466096021; Occurrence Remarks: Plains black-headed Snake;; Coordinate Uncertainty in Meters: 4073.00000.

Jeff Davis, Texas: 30.593079, -103.886746: : 10/22/2020: Stephen Trevino: 22 Oct 2020 ; Coordinate Uncertainty in Meters: 11.00000.

Crosby, Texas: 33.487172, -101.101564: : 6/1/2026: Jeff Back: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 3860380312; Occurrence Remarks: 74F, recent DOR;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 4935712021; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 3881579555; Occurrence Remarks: Under a rotten agave;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 3902197270; Occurrence Remarks: Found after a big rain in portal. Not sure if itΓÇÖs enough for a proper ID but an individual we met there confidently IDed it as nigriceps for us;; Coordinate Uncertainty in Meters: 512.00000.

GBIFID: 3903037523; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 3994166503; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 1291660459; Occurrence Remarks: Western Black Headed Snake Date: March 10, 2015 Time: 8:20 pm Soil: rocky/sandy, under Fallen Yucca Temp: 74 degrees F Color: tan with black head;; Coordinate Uncertainty in Meters: 300839.00000.

GBIFID: 1227715688; Occurrence Remarks: In leaf litter of Quercus havardii. Captured and released after pictures were taken.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 3698398776; Occurrence Remarks: IÆve had two two research grade suggestions of different species for this same snake. Stuck between T. gracilis and T. nigraceps.;; Coordinate Uncertainty in Meters: 922.00000.

GBIFID: 4112191450; Occurrence Remarks: Unsure of species.;; Coordinate Uncertainty in Meters: 135.00000.

GBIFID: 4937094996; Occurrence Remarks: AOR on FM 1111: ~ 18 miles N of Sierra Blanca. GTS 343. KU CT 11968. Map point is approximate.;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4153464510; Occurrence Remarks: DOR - 1:09 AM - 77 degrees - hit by cars ahead of us. RIP lil dude. May he rest :( Instagram: reptijake Follow for more herps!;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 4162154838; Occurrence Remarks: Hiked at 80┬░ He could probably use a proactiv subscriptionΓÇª I know that helped my blackhead issues;; Coordinate Uncertainty in Meters: 1715.00000.

GBIFID: 4430927739; Occurrence Remarks: I struggle with blackheads too, IÆd avoid a camera as well, but skincare is nothing to be ashamed of. left him with a topical serum to hopefully clear out those blackheads Cruised at 84░;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 4954522301; Occurrence Remarks: Hidalgo County;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 1249276447; Occurrence Remarks: http://www.naherp.com/vouchers/180736-234465.jpg http://www.naherp.com/vouchers/180736-234466.jpg;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 5087627629; Occurrence Remarks: Roadkill;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 4935998272; Occurrence Remarks: Juvenile found w Kyle Elmore under rocks on a cool overcast day. Imaged only. GTS 2217. Coral red venter. Numbers are cm, small divisions are mm.;; Coordinate Uncertainty in Meters: 29278.00000.

GBIFID: 1453277281; Occurrence Remarks: Sterling county record - TNHC #84903 Private ranch;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 2641410250; Occurrence Remarks: Texas Herpetological Society field trip;; Coordinate Uncertainty in Meters: 527.00000.

GBIFID: 911502515; Occurrence Remarks: Captured near Barnhart, TX. May be duplicate photos on iNaturalist.;; Coordinate Uncertainty in Meters: 29278.00000.

GBIFID: 1586150155; Occurrence Remarks: Cruised on road.;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 1453542477; Occurrence Remarks: Small (7-10 inches),slender pale brown snake with a black head. Belly is pink. Found in a rocky canyon with somewhat sandy soil.;; Coordinate Uncertainty in Meters: 110.00000.

GBIFID: 1586151267; Occurrence Remarks: Moving across museum parking lot following heavy rain.;; Coordinate Uncertainty in Meters: 174.00000.

GBIFID: 1640053421; Occurrence Remarks: Three separate snakes 8 to 10 long with black heads, pinkish tan bodies and dual red stripes on the undersides. Found under black garden filter cloth.;; Coordinate Uncertainty in Meters: 1.11000.

Janos, Chihuahua: 30.838826, -108.425995: : 8/23/2022: Nancy Hern├índez: 23 Aug 2022 ; Coordinate Uncertainty in Meters: 17.00000.

Hidalgo, New Mexico: 31.593337, -108.485122: : 8/28/2025: Wolfgang W├╝ster: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Juarez, Chihuahua: 31.530456, -106.525093: : 2/21/2020: nixinidaruy: 21 Feb 2020 ; Coordinate Uncertainty in Meters: 9.00000.

Barber, Kansas: 37.2818133333, -98.7488116667: SW US-160, Medicine Lodge, KS, US: 8/1/2024: (swamp-walker) Elizabeth Walker: 1 Aug 2024 ; Coordinate Uncertainty in Meters: 0.00000.

Barber, Kansas: 37.282055, -98.7974083333: SW US-160, Medicine Lodge, KS, US: 6/25/2024: (shawn_hinderliter) Shawn Hinderliter: 25 Jun 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Barber, Kansas: 37.2852194444, -98.9336666667: Barber County, KS, USA: 7/4/2018: iNat User (Dexter R Mardis prairiehagrid): 4 Jul 2018 :
Quality grade: research; Url: https://www.inaturalist.org/observations/53799404;; Coordinate Uncertainty in Meters: 0.00000.

Barber, Kansas: 37.2889777778, -98.9325111111: Barber, Kansas, United States: 7/4/2018: iNat User (Dexter R Mardis prairiehagrid): 4 Jul 2018 :
Quality grade: research; Url: https://www.inaturalist.org/observations/53799398;; Coordinate Uncertainty in Meters: 0.00000.

Barber, Kansas: 37.294955, -98.931345: NW Sun City Rd, Lake City, KS, US: 7/26/2021: iNat User ( david_kelley): 26 Jul 2021 :
Quality grade: research; Url: https://www.inaturalist.org/observations/88789266;; Coordinate Uncertainty in Meters: 0.11000.

Barber, Kansas: 37.3037033333, -98.9252466667: NW Sun City Rd, Lake City, KS, US: 7/26/2021: iNat User ( david_kelley): 26 Jul 2021 :

Barber, Kansas: 37.32165833, -98.92737: NW Sun City Rd, Lake City, KS, US: 8/14/2020: iNat User ( david_kelley): 14 Aug 2020 :

Barber, Kansas: 37.32307, -98.9265833333: Sun City Rd, Sun City, KS, US: 6/23/2016: iNat User (Jenny Smith liapun312): 23 Jun 2016 :
Quality grade: research; Url: http://www.inaturalist.org/observations/3513669; AOR, lifer!; Coordinate Uncertainty in Meters: 1.11000.

Quality grade: research; Url: https://www.inaturalist.org/observations/130636930; Air temp 82 F. Basking on road.; Coordinate Uncertainty in Meters: 0.00000.

Finney, Kansas: 37.9553443767, -100.8917494118: Garden City, KS 67846, USA: 5/15/2022: iNat User (Patrick Geier patrickgeier): 15 May 2022 :

Quality grade: research; Url: https://www.inaturalist.org/observations/13464777; Location not exact; Coordinate Uncertainty in Meters: 0.00000.

Morton, Kansas: 37.1366558396, -101.8835616324: Morton County, KS, USA: 5/14/2021: iNat User (Brian Hinds fundad): 14 May 2021 :

Logan, Kansas: 38.8988277778, -100.9779861111: Logan, Kansas, United States: 5/22/2021: iNat User (Dexter R Mardis prairiehagrid): 22 May 2021 :

Logan, Kansas: 38.8989361111, -100.978025: Logan, Kansas, United States: 5/22/2021: iNat User (Dexter R Mardis prairiehagrid): 22 May 2021 :

Logan, Kansas: 38.9043888889, -101.2914444444: Russell Springs, KS 67764, USA: 6/24/2022: iNat User (Dexter R Mardis prairiehagrid): 24 Jun 2022 :

Logan, Kansas: 38.9044083333, -101.3023444444: Russell Springs, KS 67764, USA: 6/24/2022: iNat User (Dexter R Mardis prairiehagrid): 24 Jun 2022 :

Logan, Kansas: 38.9077361111, -101.3143694444: Logan County, US-KS, US: 6/24/2022: iNat User (Travis W. Taggart twtaggart): 24 Jun 2022 :

Barber, Kansas: 37.119067, -98.876444: : 6/4/2023: Joe Paysen: 4 Jun 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Logan, Kansas: 38.76525728, -101.3722328: Logan County, KS, USA: 7/30/2011: iNat User (Travis W. Taggart twtaggart): 30 Jul 2011 :

Wallace, Kansas: 38.8447579722, -101.5913579722: Wallace, KS, USA: 7/16/2021: iNat User (Travis W. Taggart twtaggart): 16 Jul 2021 :

Occurrence Remarks: Occurrence Remarks: Found in a basement; Coordinate Uncertainty in Meters: 242.00000.

Occurrence Remarks: Crossing path; Coordinate Uncertainty in Meters: 28181.00000.

Occurrence Remarks: 72F; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: 71F; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: DOR collected; Coordinate Uncertainty in Meters: 28417.00000.

Russell, Kansas: 38.890472, -98.52358: : 9/28/2025: kosmickid: 28 Sep 2025 ; Coordinate Uncertainty in Meters: 6.00000.

Trego, Kansas: 38.7794511975, -99.7751425425: Trego County, KS, USA: 10/6/2018: iNat User (Nick Varvel nickvarvel): 6 Oct 2018 :

Occurrence Remarks: Occurrence Remarks: About 11-12 inches; Coordinate Uncertainty in Meters: 28359.00000.

Clark, Kansas: 37.3872202, -99.7801220997: NA: 4/26/2025: iNat user (codydc) Cody: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.01000.

Clark, Kansas: 37.3899998079, -99.7791684419: NA: 4/26/2025: iNat user (codydc) Cody: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Finney, Kansas: 37.95591968, -100.89247686: Finney County, US-KS, US: 5/28/2023: iNat User: 5691449 (patrickgeier, Patrick Geier): 28 May 2023 :
Positional Accuracy: 7 meters;; Coordinate Uncertainty in Meters: 0.00000.

Clark, Kansas: 37.3872751661, -99.7797134773: NA: 4/26/2025: iNat user (tom1832) Tom Luhring: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Clark, Kansas: 37.3940164383, -99.7802008252: NA: 4/26/2025: iNat user (dudleyam): 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Clark, Kansas: 37.3990673048, -99.7905567885: NA: 4/26/2025: iNat user (jkadams) Jordan Kayla Adams: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Clark, Kansas: 37.3820145284, -99.7791255265: NA: 4/26/2025: iNat user (emily82986) Emily Morton: 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Barber, Kansas: 37.34567, -98.923225: NW Sun City Rd, Lake City, KS, US: 5/12/2023: iNat User: 684724 (swamp-walker, Elizabeth Walker): 12 May 2023 :
Positional Accuracy: 5 meters;; Coordinate Uncertainty in Meters: 1.11000.

Positional Accuracy: 5 meters;; Coordinate Uncertainty in Meters: 0.00000.

GBIFID: 4103240075; Occurrence Remarks: Found two with a Sonora nearby. They liked this area. This observation is for two individuals Otero County;; Coordinate Uncertainty in Meters: 28329.00000.

Clark, Kansas: 37.3911750506, -99.7923949637: NA: 4/26/2025: iNat user (marjaime): 26 Apr 2025 ; Coordinate Uncertainty in Meters: 0.00000.

Grade: research; URL: https://www.inaturalist.org/observations/15211084; Coordinates Obscured: FALSE; Coordinate Uncertainty in Meters: 0.00000.

Barber, Kansas: 37.28592, -98.933145: NW Sun City Rd, Lake City, KS, US: 9/3/2023: iNat User: david_kelley: 3 Sep 2023 :
Grade: research; URL: https://www.inaturalist.org/observations/181812480; Air temp: 80 FHumidity: 39%Barometric pressure: 27.74 inHg80% waning crescent moon still low on horizon.; Coordinate Uncertainty in Meters: 1.11000.

Barber, Kansas: 37.274405, -98.6456083333: SW Gyp Hill Rd, Medicine Lodge, KS, US: 7/14/2023: iNat User: swamp-walker (Elizabeth Walker): 14 Jul 2023 :
Grade: research; URL: https://www.inaturalist.org/observations/176303246;; Coordinate Uncertainty in Meters: 0.11000.

Hodgeman, Kansas: 38.0618222222, -99.9164694444: Center, KS, USA: 5/20/2023: iNat User: 174123 (twtaggart, Travis W. Taggart): 20 May 2023 ; Coordinate Uncertainty in Meters: 0.00000.

Otero, Colorado: 37.682764, -103.77721: : 5/9/2026: tantilla_goat: 9 May 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Huerfano, Colorado: 37.879383, -104.675745: : 5/16/2026: Christian Nunes: 16 May 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Socorro, New Mexico: 34.323517, -106.914824: : 1/12/2026: moxxwell: 12 Jan 2026 ; Coordinate Uncertainty in Meters: 28846.00000.

Carson, Texas: 35.381803, -101.498757: : 7/17/2025: Katie Paul: 17 Jul 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Otero, Colorado: 37.761363, -103.513027: : 4/12/2026: Ian Nickle: 12 Apr 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Cimarron, Oklahoma: 36.659386, -102.575022: : 6/9/2026: batemanderek85: 9 Jun 2026 ; Coordinate Uncertainty in Meters: 28505.00000.

Otero, Colorado: 37.702644, -103.69332: : 6/7/2025: Joshua Smith: 7 Jun 2025 ; Coordinate Uncertainty in Meters: 28359.00000.

Occurrence Remarks: SPLT Heartland Preserve - private property, limited access; Coordinate Uncertainty in Meters: 28359.00000.

Occurrence Remarks: 82F, Still a little bit light out; Coordinate Uncertainty in Meters: 28388.00000.

Occurrence Remarks: 71F, Recent DOR; Coordinate Uncertainty in Meters: 28417.00000.

Carson, Texas: 35.378308, -101.57802: : 6/24/2026: Conner Stamps: 24 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Bernalillo, New Mexico: 35.125686, -106.820751: : 7/14/2026: Joshua Emms: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 28734.00000.

Greeley, Kansas: 38.482238, -101.668255: : 6/7/2026: lmmoritz: 7 Jun 2026 ; Coordinate Uncertainty in Meters: 12.00000.

Occurrence Remarks: 73F; Coordinate Uncertainty in Meters: 28388.00000.

Crowley, Colorado: 38.498956, -103.668638: : 7/16/2026: Beren Erkan (herper/photographer): 16 Jul 2026 ; Coordinate Uncertainty in Meters: 28240.00000.

Occurrence Remarks: 70F DOR Hit by car as we turned around; fluorescent under UV light?; Coordinate Uncertainty in Meters: 28359.00000.

Otero, Colorado: 37.854908, -103.559106: : 7/16/2026: Beren Erkan (herper/photographer): 16 Jul 2026 ; Coordinate Uncertainty in Meters: 28329.00000.

Pueblo, Colorado: 38.007664, -104.674049: : 6/27/2026: moirakennedy: 27 Jun 2026 ; Coordinate Uncertainty in Meters: 100.00000.

Sandoval, New Mexico: 35.344475, -106.599153: : 9/9/2025: mirabaimmartin: 9 Sep 2025 ; Coordinate Uncertainty in Meters: 16.00000.

GBIFID: 3802369632; Occurrence Remarks: Juvenile (4 TL) Plains Black-headed Snake (Tantilla nigriceps), Otero County, Colorado;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3873474441; Occurrence Remarks: 77F;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3873106350; Occurrence Remarks: 77F, a few rain drops;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3915478610; Occurrence Remarks: Found dead.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3903125555; Occurrence Remarks: Probably Los Animas CO Biggest one IΓÇÖve seen;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 1880626737; Occurrence Remarks: First for us here. Not much bigger than an earth worm.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3859590362; Occurrence Remarks: 83F, S 15mph;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4102843099; Occurrence Remarks: Flipped in a small wash. Love this species Otero County;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4126841717; Occurrence Remarks: found under a rock;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4103248091; Occurrence Remarks: Flipped near a Sonora and another Tantilla. First one Otero County;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4162204297; Occurrence Remarks: 78F;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 4127386953; Occurrence Remarks: Same individual as https://www.inaturalist.org/observations/163693910;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4153674674; Occurrence Remarks: dor;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4162176980; Occurrence Remarks: 71F;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4400433069; Occurrence Remarks: dor;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4413480150; Occurrence Remarks: DidnΓÇÖt even know they were here. HavenΓÇÖt seen one in a while, welcome surprise! Bent County;; Coordinate Uncertainty in Meters: 28300.00000.

GBIFID: 4430988422; Occurrence Remarks: Found dead on patio, probably killed by a cat.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4162291034; Occurrence Remarks: Bent County;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4597498033; Occurrence Remarks: Observed in Palo Duro Canyon, underneath wood debris;; Coordinate Uncertainty in Meters: 28790.00000.

GBIFID: 4416769248; Occurrence Remarks: predated by Latrodectus hesperus;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4851993679; Occurrence Remarks: Around 3-4 inches in length;; Coordinate Uncertainty in Meters: 13278.00000.

GBIFID: 4908814159; Occurrence Remarks: Found dead on the trail;; Coordinate Uncertainty in Meters: 15.00000.

GBIFID: 4908348854; Occurrence Remarks: Lives in Well;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 4921986780; Occurrence Remarks: Dead on path (DOP);; Coordinate Uncertainty in Meters: 20.00000.

GBIFID: 4952308294; Occurrence Remarks: Still alive when I found it but no doubt died soon after unfortunately Socorro County;; Coordinate Uncertainty in Meters: 28818.00000.

GBIFID: 4919566390; Occurrence Remarks: 86┬░ Las Animas County;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 2283022105; Occurrence Remarks: Found dead. Looks like it may have been stepped on.;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 5140934218; Occurrence Remarks: 62 F, DOR;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 5167758189; Occurrence Remarks: One of 3 seen in area.;; Coordinate Uncertainty in Meters: 1673.00000.

GBIFID: 5177071950; Occurrence Remarks: Observed under debris;; Coordinate Uncertainty in Meters: 13277.00000.

GBIFID: 5217334744; Occurrence Remarks: 75 degrees 10:43 Bent Country Colorado 6/28/2025 Found on road;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 2294670441; Occurrence Remarks: Found under a board;; Coordinate Uncertainty in Meters: 2104.00000.

GBIFID: 5215822739; Occurrence Remarks: Clipped, cruised;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 2311425489; Occurrence Remarks: Found dead;; Coordinate Uncertainty in Meters: 75.00000.

GBIFID: 2311425922; Occurrence Remarks: Plains Black-headed Snake Tantilla nigriceps, NM Hwy 16 near Cochiti Elementary School;; Coordinate Uncertainty in Meters: 292.00000.

GBIFID: 5215840773; Occurrence Remarks: 12:58 am;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 4022272358; Occurrence Remarks: Found under rock;; Coordinate Uncertainty in Meters: 28677.00000.

GBIFID: 2641564696; Occurrence Remarks: Very small individual found under a board;; Coordinate Uncertainty in Meters: 18.00000.

GBIFID: 2641465699; Occurrence Remarks: A large (~10) individual;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 2641474541; Occurrence Remarks: Found under a log;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2818530757; Occurrence Remarks: Little guy on the road;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3455895018; Occurrence Remarks: Found in house at night;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3301982768; Occurrence Remarks: flipped;; Coordinate Uncertainty in Meters: 28447.00000.

GBIFID: 3307144242; Occurrence Remarks: AOR, 74F;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 3325909456; Occurrence Remarks: 68F air, 85F road surface;; Coordinate Uncertainty in Meters: 28329.00000.

GBIFID: 3330480778; Occurrence Remarks: 72F; roadtemp 79 Fahrenheit;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3344123541; Occurrence Remarks: Alive and windy;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3343781295; Occurrence Remarks: Alive;; Coordinate Uncertainty in Meters: 28388.00000.

GBIFID: 3343825033; Occurrence Remarks: Alive;; Coordinate Uncertainty in Meters: 28359.00000.

GBIFID: 3344094325; Occurrence Remarks: Alive;; Coordinate Uncertainty in Meters: 28329.00000.

Las Animas, Colorado: 37.588655, -103.337949: : 7/17/2026: Beren Erkan (herper/photographer): 17 Jul 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Otero, Colorado: 37.957651, -103.464597: : 8/16/2025: Andrew Pauly: 16 Aug 2025 ; Coordinate Uncertainty in Meters: 28329.00000.

Pueblo, Colorado: 38.269174, -104.655048: : 7/7/2026: Danielle Short: 7 Jul 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Las Animas, Colorado: 37.612842, -103.331963: : 7/5/2026: Danner Chartier: 5 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Bent, Colorado: 37.659245, -103.39035: : 7/6/2026: Danner Chartier: 6 Jul 2026 ; Coordinate Uncertainty in Meters: 49.00000.

Sandoval, New Mexico: 35.235813, -106.623413: : 8/28/2025: janetruth: 28 Aug 2025 ; Coordinate Uncertainty in Meters: 3.00000.

Otero, Colorado: 37.71555, -103.620513: : 7/14/2026: Danner Chartier: 14 Jul 2026 ; Coordinate Uncertainty in Meters: 13.00000.

Bernalillo, New Mexico: 35.092689, -106.471455: : 8/19/2025: novarium: 19 Aug 2025 ; Coordinate Uncertainty in Meters: 1180.00000.

Bent, Colorado: 37.661028, -103.254219: : 7/4/2026: Jonathan Hakim: 4 Jul 2026 ; Coordinate Uncertainty in Meters: 28359.00000.

Socorro, New Mexico: 34.424514, -106.678306: : 6/23/2026: Simon Scarpetta: 23 Jun 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Las Animas, Colorado: 37.483623, -103.304524: : 7/18/2026: Evan Riskus: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Las Animas, Colorado: 37.420409, -103.319668: : 7/17/2026: Beren Erkan (herper/photographer): 17 Jul 2026 ; Coordinate Uncertainty in Meters: 28388.00000.

Sandoval, New Mexico: 35.234412, -106.618038: : 5/25/2025: janetruth: 25 May 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Las Animas, Colorado: 37.301906, -103.278083: : 7/18/2026: Beren Erkan (herper/photographer): 18 Jul 2026 ; Coordinate Uncertainty in Meters: 28417.00000.

HM 153539
Russell, Kansas: 38.97966667, -98.85305: NA: 4/26/2012: STEVE, BLEDSOE: 26 Apr 2012 ; Coordinate Uncertainty in Meters: 0.00000.

Socorro, New Mexico: 34.416867, -106.810167: : 7/17/2026: arrrrrrrria: 17 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Las Animas, Colorado: 37.612093, -103.331508: : 7/18/2026: jayplot: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 241.00000.

Russell, Kansas: 39.0264814, -98.9999276: Paradise, KS, USA: 4/30/2024: iNat User: dylanfrom785 (Dylan Mermis): 30 Apr 2024 :
Grade: research; URL: https://www.inaturalist.org/observations/212478643; Coordinates Obscured: FALSE; Coordinate Uncertainty in Meters: 0.01000.

HM 10660
Russell, Kansas: 39.11832778, -98.62416667: NA: 5/0/1983: Hubbs, BrianMay 1983 ; Coordinate Uncertainty in Meters: 0.00000.

HM 11310
Russell, Kansas: 39.11633611, -98.62288056: NA: 5/0/1983: Hubbs, BrianMay 1983 ; Coordinate Uncertainty in Meters: 0.00000.

Hodgeman, Kansas: 38.058875, -99.86174722: NA: 5/1/2010: Hubbs, Brian: 1 May 2010 ; Coordinate Uncertainty in Meters: 0.11000.

County Record; Coordinate Uncertainty in Meters: 0.00000.

Russell, Kansas: 39.0261503997, -98.9998144: Paradise, KS, USA: 4/30/2024: iNat User: dylanfrom785 (Dylan Mermis): 30 Apr 2024 :
Grade: research; URL: https://www.inaturalist.org/observations/212479287; Coordinates Obscured: FALSE; Coordinate Uncertainty in Meters: 0.01000.

Lincoln, Kansas: 38.88141, -98.473036: NA: 5/9/2017: Messenger, Kevin: 9 May 2017 ; Coordinate Uncertainty in Meters: 1.11000.

Russell, Kansas: 39.0159, -98.910155: NA: 5/21/2015: Hubbs, Brian: 21 May 2015 ; Coordinate Uncertainty in Meters: 11.10000.

Russell, Kansas: 39.017296, -98.91031: NA: 5/21/2015: Hubbs, Brian: 21 May 2015 ; Coordinate Uncertainty in Meters: 0.11000.

Russell, Kansas: 39.018251, -98.910189: NA: 5/21/2015: Hubbs, Brian: 21 May 2015 ; Coordinate Uncertainty in Meters: 0.11000.

Ellis, Kansas: 39.062265, -99.239806: Kansas, US: 4/24/2014: iNat User (Ryan Shofner r_shofner): 24 Apr 2014 :
Quality grade: research; Url: https://www.inaturalist.org/observations/57087700; 2014 FHSU Herp Class; Coordinate Uncertainty in Meters: 0.11000.

Ellis, Kansas: 39.0758638384, -99.3864833333: Saline River Rd, Plainville, KS, US: 9/25/2021: iNat User ( ryanurbanek): 25 Sep 2021 :

Hodgeman, Kansas: 38.05904722, -99.87952222: NA: 5/9/2009: Hubbs, Brian: 9 May 2009 ; Coordinate Uncertainty in Meters: 0.00000.

Russell, Kansas: 39.0143754997, -98.9094544997: NA: 5/28/2025: iNat user (dylanfrom785) Dylan Mermis: 28 May 2025 ; Coordinate Uncertainty in Meters: 0.01000.

Osborne, Kansas: 39.13933, -98.860504: : 4/26/2026: tantilla_goat: 26 Apr 2026 ; Coordinate Uncertainty in Meters: 28151.00000.

Grade: research; URL: https://www.inaturalist.org/observations/180679052; A whopping 4 inches long!; Coordinate Uncertainty in Meters: 0.00000.

Grade: research; URL: https://www.inaturalist.org/observations/183165635;; Coordinate Uncertainty in Meters: 0.00000.

Lincoln, Kansas: 38.878519, -98.473745: NA: 4/20/2017: Becker, Donald: 20 Apr 2017 ; Coordinate Uncertainty in Meters: 0.11000.

Lincoln, Kansas: 38.878358, -98.473705: NA: 4/20/2017: Michels, Justin: 20 Apr 2017 ; Coordinate Uncertainty in Meters: 0.11000.

Russell, Kansas: 38.943623, -98.949893: NA: 4/26/2015: Willicombe, Stuart: 26 Apr 2015 ; Coordinate Uncertainty in Meters: 0.11000.

2014 FHSU Herp Class; Coordinate Uncertainty in Meters: 0.11000.

Hodgeman, Kansas: 38.059398, -99.876451: NA: 4/24/2017: Hubbs, Brian: 24 Apr 2017 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: One of four individuals flipped under rocks in a 10 square foot radius on a hot (80-84 degree F) afternoon.; Coordinate Uncertainty in Meters: 28000.00000.

Boulder, Colorado: 40.113327, -105.222272: : 4/2/2026: Beren Erkan (herper/photographer): 2 Apr 2026 ; Coordinate Uncertainty in Meters: 28000.00000.

Boulder, Colorado: 40.114736, -105.257349: : 4/2/2026: Beren Erkan (herper/photographer): 2 Apr 2026 ; Coordinate Uncertainty in Meters: 28000.00000.

Boulder, Colorado: 40.123345, -105.236716: : 4/2/2026: Beren Erkan (herper/photographer): 2 Apr 2026 ; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3858773124; Occurrence Remarks: Flipped under a perfect rock at the bottom of a steep grade Boulder county;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 3859756139; Occurrence Remarks: Very small individual flipped under our second rock of the day. Was cold and behaved well for photos. Boulder county;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4096434910; Occurrence Remarks: Flipped under a rock along a rocky hillside. Super cool find! My 3rd county for this species. Jefferson County;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 4126965748; Occurrence Remarks: Such an awesome locale. Super fun snakes to find, love them, despite their drab colors and small size Boulder County;; Coordinate Uncertainty in Meters: 28000.00000.

Occurrence Remarks: One of four individuals flipped under rocks in a 10 square foot radius on a hot (80-84 degree F) sunny afternoon.; Coordinate Uncertainty in Meters: 28000.00000.

Occurrence Remarks: One of four specimens flipped under separate rocks in a 10 square foot radius on a hot afternoon (80-84 degrees F); Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4127134874; Occurrence Remarks: Flipped oddly close to water Boulder County;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4127018266; Occurrence Remarks: Boulder County;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4126693286; Occurrence Remarks: Boulder County;; Coordinate Uncertainty in Meters: 28000.00000.

Boulder, Colorado: 40.04741, -105.370023: : 5/10/2024: Beren Erkan (herper/photographer): 10 May 2024 :

Boulder, Colorado: 40.179497, -105.387643: : 5/10/2024: Beren Erkan (herper/photographer): 10 May 2024 :
GBIFID: 4863889765; Occurrence Remarks: Little one;; Coordinate Uncertainty in Meters: 28000.00000.

Boulder, Colorado: 40.168703, -105.306048: : 5/10/2024: Beren Erkan (herper/photographer): 10 May 2024 :

GBIFID: 4863465134; Occurrence Remarks: This one was my Lifer;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4863628740; Occurrence Remarks: Flipped Cool coloration on this one;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4863559355; Occurrence Remarks: Credits to @riskybusiness for herping with me, snake #24 of the season!;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 4901068648; Occurrence Remarks: Under a tiny piece of wood. Another surprise find and another first in Kansas. Ellis County;; Coordinate Uncertainty in Meters: 28151.00000.

GBIFID: 4130228754; Occurrence Remarks: Flipped on a very steep hillside under an unassuming rock. Usually I donΓÇÖt find them that steep. Small one. East facing slope. New locale! Only one individual all day. Always love finding these snakes in the front range Jeffco;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 4133830880; Occurrence Remarks: Found under a small rock on a steep slope. New local for the species. Same observation as https://www.inaturalist.org/observations/165830159;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 4413376253; Occurrence Remarks: Found in very similar habitat to the one I found in April, about a half mile north. This one was huge, and maybe gravid? Sat surprisingly well. Found in a wash, in a pile of small-to-medium sized rocks. You gotta work pretty damn hard to find these snakes in jeffco, but boy the result is always worth the effort. Jeffco;; Coordinate Uncertainty in Meters: 28060.00000.

GBIFID: 5230991358; Occurrence Remarks: Crossing a trail at night;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 5230761341; Occurrence Remarks: Crossing a trail at night;; Coordinate Uncertainty in Meters: 28000.00000.

Larimer, Colorado: 40.380255, -105.258933: : 7/15/2025: Beren Erkan (herper/photographer): 15 Jul 2025 :
GBIFID: 5231620283; Occurrence Remarks: 73 degrees 9:50 pm Boulder County Colorado 7/15/2025 clear sky Found with @milkysnake;; Coordinate Uncertainty in Meters: 27969.00000.

GBIFID: 5230822289; Occurrence Remarks: Crossing a trail at night;; Coordinate Uncertainty in Meters: 28000.00000.

GBIFID: 5231570351; Occurrence Remarks: Found with @riskybusinuss and @berensbugsnbeast;; Coordinate Uncertainty in Meters: 27969.00000.

GBIFID: 5230072295; Occurrence Remarks: Found by @milkysnake and found with @berensbugsnbeasts;; Coordinate Uncertainty in Meters: 27969.00000.