Letheobia caeca (DUMÉRIL, 1856)
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Higher Taxa | Typhlopidae (Afrotyphlopinae), Typhlopoidea, Serpentes, Squamata (snakes) |
Subspecies | |
Common Names | E: Gabon Beaked Snake |
Synonym | Onychocephalus caecus DUMÉRIL 1856: 462 Typhlops coecus — JAN 1864 Letheobia caeca — COPE 1868: 322 Typhlops acutirostratus ANDERSSON 1916: 23 Typhlops caecus caecus — WITTE 1961 Typhlops caecus — PERRET 1961 Rhinotyphlops caecus — ROUX-ESTÈVE 1974: 210 Rhinotyphlops caecus — MCDIARMID, CAMPBELL & TOURÉ 1999: 79 Letheobia caecus — WALLACH 2005 Letheobia acutirostratus — WALLACH 2005 Letheobia acutirostratus — BROADLEY & WALLACH 2007 Letheobia caeca — BROADLEY & WALLACH 2007 Letheobia caeca — HEDGES et al. 2014 Letheobia caeca — WALLACH et al. 2014 |
Distribution | Gabon, Ghana, W/C/E Democratic Republic of the Congo (Zaire), Congo (Brazzaville), Cameroon, Equatorial Guinea Type locality: "Gabon." |
Reproduction | oviparous |
Types | Syntypes: MNHN-RA 1063 and MNHN-RA 1994.1166 (formerly MNHN-RA 1063A) |
Diagnosis | Diagnosis (genus): Letheobia is comprised of the clade stemming from the most recent common ancestor of Typhlops leucostictus and the Rhinotyphlops newtonispecies group. This includes Roux-Estève’s (1974) Typhlops Groups II and V plus Rhinotyphlops Groups IV, V, VI and VII, which is equivalent to the Letheobia clade of species examined by Wallach 1998 (PhD thesis, Northeastern University, Boston). For an alternative diagnosis see PYRON & WALLACH 2014: 50. Additional details (2944 characters) are available for collaborators and contributors. Please contact us for details. |
Comment | In an unpublished PhD thesis, Wallach (1998) revived Rhinotyphlops acutirostratus for the Congo basin populations. Distribution: not in Benin fide ULLENBRUCH et al. 2010. Not listed for Togo by Segniagbeto et al. 2012. Has been erroneously listed for Benin but does not occur there (Hughes 2013). Not in Sierra Leone fide TRAPE & BALDÉ 2014: 320. For a map with localities in Equatorial Guinea see SÁNCHEZ-VIALAS et al. 2022. Type species: Onychocephalus caecus DUMÉRIL 1856 is the type species of the genus Letheobia COPE 1868. Synonymy: Kaiser et al. 2013 considered the generic names Cottontyphlops Hoser 2012, Gleesontyphlops Hoser 2012, Laidlawtyphlops Hoser 2012, Smythtyphlops Hoser 2012, Trioanotyphlops Hoser 2012, Whybrowtyphlops Hoser 2012, Whybrowtyplops [sic] Hoser 2012 invalid and rejected their use instead of Letheobia. Species of Letheobia are usually pink in life, becoming cream or yellowish in preservative. The scales are not densely pigmented and often partly transparent and therefore, the arrangement and shape of scales, especially the head shields, are notoriously difficult to assess under a dissecting microscope (Dehling et al. 2018). Morphology: for morphological data across the species in this genus see Pyron & Wallach 2014: Table 2. |
Etymology | Although not stated in the original description, the genus name is a feminine noun formed from the Greek lethe (forgotten) and bios (life), meaning forgotten life, an appropriate reference to blindsnakes. Possibly a reference to the river Lethe in Hades, associated with the Greek spirit of forgetfulness and oblivion |
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