Rediscovery of the rare tree frog Hyla inframaculata Boulenger, 1882 (Anura: Hylidae), in Amazonian Brazil with notes on variation and distribution, and its generic allocation

Abstract

Hyla (= Osteocephalus) inframaculata was described on the basis of one specimen collected more than 130 years ago in the neighbourhood of Santarém, Pará, Brazil. Only in 2001 three new specimens were collected in the Belo Monte area of the Xingu River, Pará, and ten more in late 2011 and 2012 in the same area. The distribution of the species seems to be restricted to "terra firme" (= not flooded) and temporarily flooded forest between the Tapajós and Xingu rivers, in a band south of the Amazon River. The new material deposited in MPEG is described, morphometric data for males, females and a half grown are provided and some conclusions in the literature are corrected. A new diagnosis is presented. The species seems to belong to the genus Dryaderces.