Petracola ventrimaculatus (BOULENGER, 1900)
Can you confirm these amateur observations of Petracola ventrimaculatus?
|Higher Taxa||Gymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards)|
|Common Names||Spotted Lightbulb Lizard|
|Synonym||Proctoporus ventrimaculatus BOULENGER 1900: 185|
Proctoporus ventrimaculatus — PETERS & DONOSO-BARROS 1970: 240
Proctoporus ventrimaculatus — DOAN & SCHARGEL 2003
Petracola ventrimaculatus — DOAN & CASTOE 2005
Proctoporus ventrimaculatus — SCHLÜTER 2006
Petracola ventrimaculata — ECHEVARRÍA & VENEGAS 2015
|Distribution||N Peru (interandean valleys)|
Type locality: Cajamarca, Peru, elevation 3300 m. Map legend:
- Region according to the TDWG standard, not a precise distribution map.
NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
|Types||Holotype: BMNH 19184.108.40.206 (formerly 1900.3.30.17), sex undetermined (SVL 34 mm; tail  mm), collected by P. O. Simons].|
|Comment||The monotypic P. ventrimaculatus Boulenger group was defined by a divided palpebral disc, two supraoculars with a greatly expanded first superciliary, and dark ventral scales (Uzzell, 1970).|
DOAN & CASTOE (2005) errected a new genus for P. ventrimaculatus as the species was distinct from all other proctoporus (despite the new genus was not necessary in order to maintain monophyly):
Type species: Proctoporus ventrimaculatus BOULENGER 1900: 185 is the type species of the genus Petracola BOULENGER 1900.
Definition of Petracola: Tongue with imbricate, scale-like papillae. Head scales smooth without striations or rugosities: single frontonasal, frontal, and interparietal; paired frontoparietals and parietals; prefrontals absent; nostril pierced in a single nasal; nasals not in contact; supraoculars three or four. Eyelids developed, lower with a translucent disc, usually divided into multiple palpebral scales. Posterior gulars squarish. Limbs pentadactyl; digits clawed. Dorsal scales quadrangular, elongate, smooth, juxtaposed, forming transverse series only. Ventrals large, smooth, quadrangular, juxtaposed, forming regular longitudinal and transverse series. Femoral pores usually present in males and females, less than six per hind limb; preanal pores present or absent. Tail cylindrical.
Diagnosis (genus Petracola): Petracola differs from members of Alopoglossinae by having its tongue covered in imbricate, scale-like papillae instead of oblique plicae (Harris, 1994), from Gymnophthalminae by having moveable eyelids, from Rhachisaurinae by having external ear openings, and from Ecpelopinae by lacking prefrontal scales. Within Cercosaurinae (sensu Castoe et al., 2004), Petracola differs from all genera except Pholidobolus, Proctoporus, and Riama by lacking prefrontal scales. Petracola differs from Proctoporus by having smooth dorsal scales, from Pholidobolus by having juxtaposed dorsal scales and from Riama by a combination of smooth dorsal scales and femoral pores per hind limb in both sexes less than six (exclusive of pre-anal pores).
|Etymology||The epithet, an adjective, is probably a conflation of the Latin words venter and macula terminated by the adjectival suffix -atus referring to the black markings on the venter.|
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