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Rena dugesii (BOCOURT, 1881)

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Higher TaxaLeptotyphlopidae, Epictinae, Epictini, Typhlopoidea, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Duges’ Threadsnake
G: Duges-Schlankblindschlange
S: Culebrilla Lombriz de Dugès 
SynonymCatodon dugesis BOCOURT 1881: 81
Stenostoma tenuiculum GARMAN 1884: 5 (fide WALLACH et al. 2014)
Rena tenuicula — COPE 1887: 91
Leptotyphlops humilis tenuiculus — KLAUBER 1940: 538
Leptotyphlops humilis dugesi — ZWEIFEL 1959
Leptotyphlops humilis dugesii — HARDY 1969: 154
Leptotyphlops humilis dugesi — HAHN 1979
Leptotyphlops humilis tenuiculus — HAHN 1979
Leptotyphlops humilis dugesi — WEBB 1984
Leptotyphlops humilis dugesii — PETERSON 1995
Leptotyphlops dugesii — LEMOS-ESPINAL et al. 2004
Rena dugesii — WALLACH et al. 2014: 631
Rena humilis dugesii — HEIMES 2016: 30
Rena dugesii — MCCRANIE & HEDGES 2016
Rena dugesii — LEMOS-ESPINAL et al. 2020
Rena dugesii — FLORES-VILLELA et al. 2022 
DistributionMexico (Sinaloa, Colima)

Type locality: Colima, Mexico.

tenuiculus: see comment.  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype: MNHN-RA 1651; other specimens: LACM, UF, UMMZ, AMNH
Holotype: MCZ 4519 [tenuiculus] 
DiagnosisDiagnosis: Differs from other races in having a combination of 12 scale rows around the tail, 7 to 9 pigmented dorsalmost scale rows, less than 257 dorsals (231-257, x = 242) and more than 15 (x =17) subcaudals. (Hahn 1979)


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CommentSynonymy: Listed as synonym or subspecies of Rena humilis by Heimes 2016: 30. R. tenuicula has been considered a synonym of L. dugesii but Flores-Villela et al. 2022 consider it as a synonym of R. dulcis.

Distribution: Reported from but not in Jalisco fide CRUZ-SÁENZ et al. 2017. Not in Sonora fide Lemos-Espinal et al. 2019. 
EtymologyNamed in honor of Alfred Dugès, the father of Mexican herpetology. 
References
  • Cope, E.D. 1887. Catalogue of batrachians and reptiles of Central America and México. Bull. US Natl. Mus. 32: 7-98 - get paper here
  • Garman, Samuel 1884. The reptiles and batrachians of North America. Mem. Mus. comp. Zool, Cambridge (Massachusetts), 8 (3): xxxiv + 185 pp. [1883] [CNAH reprint 10] - get paper here
  • Hahn D E 1979. Leptotyphlops humilis (Baird and Girard). Western blind snake. Catalogue of American Amphibians and Reptiles (232): 1-4 - get paper here
  • Hardy, L.M., & McDiarmid, R.W. 1969. The amphibians and reptiles of Sinaloa, Mexico. Univ. Kansas Publ. Mus. Nat. Hist. 18 (3): 39-252. - get paper here
  • Klauber, Laurence M. 1940. The worm snakes of the genus Leptotyphlops in the United States and Northern Mexico. Transactions of the San Diego Society of Natural History 9 (18): 87-162 - get paper here
  • Lemos-Espinal JA, Smith GR 2020. A checklist of the amphibians and reptiles of Sinaloa, Mexico with a conservation status summary and comparisons with neighboring states. ZooKeys 931: 85-114 - get paper here
  • Lemos-Espinal JA, Smith GR, Pierce LJS, Painter CW 2020. The amphibians and reptiles of Colima, Mexico, with a summary of their conservation status. ZooKeys 927: 99-125 - get paper here
  • Peterson, H. William;Smith, Hobart M.;Chizsar, David 1995. Some noteworthy amphibians and reptiles from the region of Chapala, Jalisco, Mexico. Bull. Chicago Herp. Soc. 30 (5): 90-91 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Webb, R.G. 1984. Herpetogeography in the Mazatlán-Durango Region of the Sierra Madre Occidental, Mexico. Vetrebrate Ecology and Systematics - A ribute to Henry S. Fitch; Museum of Natural History, University of Kansas, Lawrence, pp. 217-241
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
  • Zweifel, Richard G. 1959. Additions to the herpetofauna of Nayarit, Mexico. American Museum Novitates (1953): 1-13 - get paper here
 
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