Amnesteophis melanauchen (JAN, 1863)
Can you confirm these amateur observations of Amnesteophis melanauchen?
Amnesteophis melanauchen
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Enicognathus melanauchen JAN 1863: 267 Enicognathus melanauchen — JAN 1866 Rhadinaea melanauchen — BOULENGER 1894: 175 Liophis melanauchen — AMARAL 1929: 173 Liophis melanauchen — VANZOLINI in PETERS & OREJAS-MIRANDA 1986 Echinanthera melanauchen — DI BERNARDO 1992 Amnesteophis melanauchen — MYERS 2011 Amnesteophis melanauchen — WALLACH et al. 2014: 28 Amnesteophis melanauchen — NOGUEIRA et al. 2019 |
| Distribution | Brazil (Bahia), possibly in error Type locality: Bahia, Brazil. |
| Reproduction | oviparous |
| Types | Holotype: RMNH 393 (Leiden) |
| Diagnosis | Diagnosis (tribus): Tribe Amnesteophiini differs from other tribes in Xenodontinae by combination of three unusual character states: (1) straight-line configuration of posterior maxillary teeth; (2) lack of hemipenial calyces; and (3) an unforked sulcus spermaticus. Hemipenial calyces also are absent in the Xenodontini, and an unforked sulcus spermaticus occurs in one species of Echinantherini (Taeniophallus nicagus). Amnesteophis melanauchen somewhat resembles Taeniophallus occipitalis in color pattern and 15 dorsal scale rows, but A. melanauchen differs externally from all Taeniophallus in having feebly keeled dorsal scales. |
| Comment | Nomenclature: The snake generic name Enicognathus and the emendation Henicognathus are both junior homonyms of bird names (MYERS 2011). Abundance: very rare; only known from the type specimen (Myers & McDowell 2014) Type species: Enicognathus melanauchen JAN 1863 is the type species of the genus Amnesteophis MYERS 2011 and of the new tribe Amnesteophiini MYERS 2011. |
| Etymology | Amnesteophis (forgotten snake), from Greek amnēstos “forgotten, no longer remembered”) + connective -e- + ophis (“snake”). Gender masculine. (For purposes of euphony, the derivation imposes elision of the final vowel in amnēstos, and the connective vowel -e- is employed rather than the -o- normally used in latinized compounding of Greek elements.) Jan’s specific name melanauchen (a Schlegel manuscript name) appears compounded from the Greek combining element melan- (neuter of melas, “black or very dark”) + auchēn (“neck”)—a masculine noun in apposition, referring to a dark blotch on the neck. |
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