Allobates trilineatus (Boulenger, 1884)

Llanqui, Irbin B., Y. Salas, Cinthya & Oblitas, Melissa P., 2019, A preliminary checklist of amphibians and reptiles from the vicinity of La Nube Biological Station, Bahuaja-Sonene National Park, Peru, Check List 15 (5), pp. 773-796 : 778

Allobates trilineatus (Boulenger, 1884)

Material examined. MUSA 4933; Transect TN18, 25. IX.2013. MUSA 4934–5 (13°25′20″S, 069°36′36″W), 22. IX.2013.

Identification. A small frog, SVL 11.4–17.7 mm in males and 14.2–19.3 mm in females. It can be identified by having dorsum tan to dark brown with dorsolateral and ventrolateral cream stripes bordering a broad blackish brown lateral band extending from the snout to the groin. Venter creamy white, usually with the throat gray in males. Finger I> II. The digital discs are expanded and have 2 dorsal scutes. Similar Allobates “ Colostethus ” species in near localities are: A. alessandroi , which has a ventrolateral stripe extending onto the venter; A. conspicuus , which has an immaculate throat and finger III not swollen in males ( Morales 2000, Grant and Rodríguez 2001, Duellman 2005).

Distribution. Allobates trilineatus is distributed in Amazonia of Bolivia, Brazil, and Peru, at low elevation forests up to 900 m a.s.l. ( Grant and Rodríguez 2001, Frost 2019).

Remarks. Allobates trilineatus is also similar to A. marchesianus , but the presence of the latter in Peru is unproven ( Grant and Rodríguez 2001, Caldwell et al. 2002).