prepollex

prepollex

(priːˈpɒlɛks)
n
(Zoology) (of some mammals, reptiles, and amphibians) an undeveloped digit growing on the inner side of the forelimb
References in periodicals archive ?
bistincta group because it has long fingers with vestigial webbing, prominent (not projecting) prepollex, and lacks a quadratojugal (Adler 1965, Duellman 2001; but see Duellman & Campbell 1992).
5 larger than tympanum diameter; subarticular tubercles conical, elevated, none bifid; supernumerary tubercles small, conical; elevated ridge of coalesced tubercles between palmar tubercle and first subarticular tubercle of Finger IV; prepollex not projecting; palmar tubercle large, flat; ulnar tubercles large coalesced forming ulnar ridge; few scattered tubercles on ventral surface of ulna near hand.
2003), such as: dark triangle spot between eyes, robust body, males with dark thorns on prepollex in their hands; in life they were green color on dorsum and white on venter.
Individuals presented diagnosis characters for this species given by Lema and Martins (2011), such as: presence of prepollex in males, snout short, granules on the skin of dorsum; life color is greenish gray on dorsum and pale yellow with paler spots on venter.
Formula pedial 2-2-3-4-3, prepollex con un elemento, prehallux con dos elementos planos.
Arm length 20% SVL; hand length 34% SVL; upper arm slender; forearm moderately robust; no axillary membrane; fingers bearing large, expanded disks; several large and small rounded tubercles present in ulnar region, aligned; pollical tubercle oval; prepollex enlarged, with keratinized spinous nuptial excrescence; subarticular tubercles large, globular or very slightly obtuse in lateral profile, rounded to ovoid in basal outline, Fingers I and II with one, Fingers III and IV with two; palmar tubercles indistinct; accessory palmar tubercles small, globular in lateral profile, rounded in basal outline, in rows, few, Finger I with none, Finger II with 1, Finger III with 1 of 2, Finger IV with 2; Finger III pad width 86% tympanum diameter.
Tiene seis elementos individuales carpales: ulnare, radiale, elemento "y", carpiano distal 2, carpiano distal 3-4-5, elemento proximal del prepollex de dos elementos.
Los elementos del prepollex concuerdan con lo descrito por Duellman & Trueb (1994).