Amastridium veliferum COPE, 1861
Can you confirm these amateur observations of Amastridium veliferum?
|Higher Taxa||Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Rufous-headed snake, Rustyhead Snake|
|Synonym||Amastridium veliferum COPE 1861: 370|
Fleischmannia obscura BOETTGER 1898: 69
Phrydops melas BOULENGER 1905: 454
Phydrops [sic] melas — DUNN 1931: 163
Amastridium veliferum — PETERS & OREJAS-MIRANDA 1970: 18
Amastridium veliferum — LINER 1994
Amastridium veliferum — SAVAGE 2002
Amastridium veliferum — WALLACH et al. 2014: 24
Amastridium veliferum — CALZADA-ARCINIEGA & TOSCANO-FLORES 2014
|Distribution||S Nicaragua, Costa Rica, Panama (IUCN)|
Type locality: Cocuyas de Veraguas, N. Grenada (= Cocuyas, Panama)
|Types||Holotype: ANSP 3738|
|Diagnosis||Diagnosis (genus) A genus (two species) differing in morphology from generalized colubrids in having a distinct canthal ridge and moderately long tail (25 to 32 % of total length). Other defining features include the basic colubrid complement of head shields; nasal completely divided; a loreal that may be fused with postnasal; a single preocular; pupil round; two pairs of chin shields; dorsal scales 17-17-17, smooth, with two apical pits on scales in nuchal region; keels present on supracloacal scales in adult males; anal and subcaudals divided; maxillary teeth 11 to 7 plus two enlarged fangs that may be grooved or not and separated from the subequal anterior teeth by a diastema; Duvernoy's gland probably present; mandibular teeth subequal; hypapophyses present on posterior dorsal vertebrae. The absence of a loreal, the presence of 17 scale rows at midbody, and the canthal ridge distinguish the genus from others in Costa Rica (although members of the genus from northern areas of Central America and Mexico have a loreal) (Savage 2002: 583).|
DIAGNOSIS: Any moderate to small unstriped, dark gray to black snake with a distinct rusty colored head will be readily identified as this species (Savage 2002: 583).
SIMILAR SPECIES (Costa Rica): (1) Geophis hoffmanni and G. zeledoni lack the rust-colored head and nape and white spots on the throat and dorsum (Savage 2002: 583).
|Comment||Synonymy: after PETERS & OREJAS-MIRANDA 1970.|
Distribution: Not listed for San Luis Potosí by Lemos-Espinal et al. 2018 (checklist SLP). Not listed in Liner 2007. Note that A. sapperi has been split off from this species.
Type species: Amastridium veliferum COPE 1860 is the type species of the genus Amastridium COPE 1860.