Cryptobatrachus boulengeri Ruthven, 1916

Lynch, John D., 2008, A taxonomic revision of frogs of the genus Cryptobatrachus (Anura: Hemiphractidae), Zootaxa 1883, pp. 28-68 : 58

Cryptobatrachus boulengeri Ruthven, 1916

( Fig. 21 )

Diagnosis: A Cryptobatrachus with pronounced sexual dimorphism in the size of the tympanum, thin dorsolateral folds, finely granular skin on the dorsum with scattered larger warts ( Fig. 10 A), fingers lacking webbing, with subarticular adhesive pads, expanded disks on the digits, and lateral expansion of the anterior part of the braincase ( Fig. 12 ).

Externally, C. boulengeri is confusable with C. conditus , C. pedroruizi , and C. ruthveni , because all share the large tympanum of the male, expanded disks on the digits, and subarticular adhesive pads. However, in the other three species, the anterior part of the braincase remains narrow.

Description: The description by Cochran & Goin (1970) is relatively complete aside from not assessing individual or sexual variation and not noting several characters reported here.

Distribution: This species is endemic to the Sierra Nevada de Santa Marta and is known from the northern face of the massif at elevations of 360-1790 m.

Figures

FIGURE 10. Skin texture (distribution of enlarged tubercles and folds) of Cryptobatrachus. (A) C. pedroruizi (ICN 38720) and (B) C. ruthveni (ICN 7151). Scale equals 2 mm.

FIGURE 12. Crania in dorsal view of Cryptobatrachus boulengeri (ICN 38918) and C. fuhrmanni (ICN 34652). Scale equals 5 mm.

FIGURE 21. Cryptobatrachus boulengeri (top, left, ICN 34663, adult male 38.4 mm SVL; bottom, left, ICN 34678, juvenile female, 53.8 mm SVL) and Cryptobatrachus conditus (top, right, ICN 33572, holotype; bottom, right, ICN 33573, adult male 38.2 mm SVL).