Tetracheilostoma bilineatum (SCHLEGEL, 1839)
Can you confirm these amateur observations of Tetracheilostoma bilineatum?
Tetracheilostoma bilineatum
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| Higher Taxa | Leptotyphlopidae, Epictinae, Epictini, Typhlopoidea, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Martinique Threadsnake, Two-lined Blind Snake |
| Synonym | Typhlops bilineatus SCHLEGEL 1839: 36 Typhlops (Fucephalus) bilineatus — FITZINGER 1843: 24 Stenostoma bilineatum — DUMÉRIL & BIBRON 1844: 331 Stenostoma (Tetracheilostoma) bilineatum — JAN 1861 Glauconia bilineata — BOULENGER 1893: 70 Glauconia bilineata — WERNER 1913: 21 Leptotyphlops bilineata — BARBOUR 1914: 324 Leptotyphlops bilineata — SCHWARTZ & HENDERSON 1991: 617 Leptotyphlops bilineatus — MCDIARMID, CAMPBELL & TOURÉ 1999: 22 Tetracheilostoma bilineatum — ADALSTEINSSON, BRANCH, TRAPE, VITT & HEDGES 2009 Tetracheilostoma bilineata — WALLACH et al. 2014: 714 |
| Distribution | Martinique, St. Lucia, Barbados (Lesser Antilles) Type locality: Martinique and Guadeloupe. |
| Reproduction | oviparous |
| Types | Syntypes: MNHN-RA 3234, MNHN-RA 3234A-B (3 syntypes) |
| Diagnosis | Diagnosis (genus): Species of Tetracheilostoma have 14 (rarely 16) midbody scale rows, 10–12 midtail scale rows, 170–192 middorsal scale rows, 12–15 subcaudals, four supralabials, moderate anterior supralabials, 104–113 mm maximum adult total length, a body shape of 31–54 (total length/width), a relative tail length of 5.1–7.0 %, a tail shape of 1.4–2.7, striped pattern (dull yellow stripes), dark brown dorsal color, and brown venter (Table 2). They are distinguished from the other genus in this subtribe, Mitophis, by having a low number of middorsal scales (170–192 versus 262–414), stouter body (31–54 versus 43–94), and a dark brown dorsum (not a pale brown or unpigmented dorsum). The support for this group was 100% BP and 100% PP for the four-gene tree (Fig. 3); no sequences were included in the nine-gene tree (Fig. 4). [from ADALSTEINSSON et al. 2009]. |
| Comment | For illustrations see Thomas, 1965. Reportedly the smallest snake species known, reaching only 11 cm (FLINDT 2002) although L. carlae HEDGES 2008 appears to be slightly smaller. Type species: Typhlops bilineatus SCHLEGEL 1839 is the type species of the genus Tetracheilostoma JAN 1861. |
| Etymology | Named after Latin bi-, ‘two’ and lineatus, a, um, from the participle of lineo, ‘marked with lines’, due to the presence of two light longitudinal stripes in this species (Schlegel 1839: 36). Etymology (genus): The generic name is neuter in gender and derived from the Greek adjective tetra (four) and Greek nouns cheilos (lip) and stoma (mouth), in reference to the presence of four supralabial scales. |
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