Cenaspis aenigma CAMPBELL, SMITH & HALL, 2018
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Cenaspis aenigma
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Cenaspis aenigma CAMPBELL, SMITH & HALL 2018 |
| Distribution | Mexico (Chiapas) Type locality: ‘‘La Loma,’’ located some 20–25 km (by road) W-NW of Rizo de Oro (sometimes known as Nueva Tenochtitlán), Chiapas, Mexico. Access is gained into this region by means of a logging road connecting Rizo de Oro with Colonia Rodulfo Figueroa; the latter is a small settlement very near the border with Oaxaca. The type locality lies to the N-NW of Colonia Rodulfo Figueroa on the western slopes of Cerro El Baúl, the highest peak in the region, rising to an elevation of 2,050 m |
| Reproduction | |
| Types | Holotype. UTA R-10544, an adult male. Collected by the late Julio Ornelas-Mart ́ınez on 6 July 1976. |
| Diagnosis | Diagnosis (Genus): This genus differs from all other New World dipsadids by two unique features: 1) all subcaudals undivided and 2) hemipenis single, noncapitate, hemipenial body and apical region completely covered with calyces, and sulcus spermaticus simple. Rhinocheilus is the only other American colubroid north of Panama having undivided sub- caudals, distinguished from Cenaspis in always having at least a few divided subcaudals, preocular present, dorsals in 23 rows at mid-body and reduced to 19 posteriorly, and a reddish and black pattern with dorsal blotches or bands. Although some other New World genera have single hemipenes, in every case of which we are aware, the hemipenial body bears spines or spinules (vs. calyces), there usually is distinct capitation, and the sulcus spermaticus is bifurcate for much of the length of the capitulum (Tables 1, 2). |
| Comment | Abundance: only known from the holotype, which was found in the stomach of a Micrurus nigrocinctus. Type species: Cenaspis aenigma CAMPBELL, SMITH & HALL 2018 is the type species of the genus Cenaspis CAMPBELL, SMITH & HALL 2018. |
| Etymology | The species name is derived from the Latin “aenigma” meaning a riddle or mystery. The generic name is derived from the Latin cena, meaning dinner, and aspis, meaning a kind of snake, in reference to predation on the single known individual of this snake. The name taken literally means ‘‘dinner snake.’’ |
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