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

in Amphibia-Reptilia
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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.

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

in Amphibia-Reptilia

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References

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Figures

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    Osteocephalus inframaculatus. (A) dorsal and (B) ventral view of the left hand of male MPEG 14311 (hand length 14.4 mm), showing the cream nuptial pad on the medial side of the base of the thumb as a triangular area in the dorsal view (A) and as an elongate narrow area in the ventral view (B) (indicated by arrows); (C) ventral view of left foot of female MPEG 14357 (length 25.4 mm). (D) lateral view of head of male MPEG 11350 (head length 14.5 mm), showing the tympanum, the iris and the colour pattern of the lips; (E) dorsal surface of head and shoulders of female MPEG 35726 (head width 20.1 mm), showing isolated tubercles, and pattern. This figure is published in colour in the online version.

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    Osteocephalus inframaculatus habitus of males. (A) dorsal and (B) ventral view of male MPEG 11350 (SVL 41.1 mm); (C) dorsal and (D) ventral view of male MPEG 14311 (SVL 48.2 mm). This figure is published in colour in the online version.

  • View in gallery

    Osteocephalus inframaculatus habitus. (A) dorso-lateral, (B) ventral and (C) postero-dorsal view of hind limbs female MPEG 14357 (SVL 59.4 mm); (D) ventral view holotype, male BMNH 1947.2.13.10, SVL 43 mm. This figure is published in colour in the online version.

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    Osteocephalus inframaculatus, variation in ventral pattern. Ventral views of (A) male MPEG 35727 (SVL 44 mm), (B) halfgrown MPEG 35725 (SVL 34 mm), (C) female MPEG 35726 (SVL 63 mm) and (D) female MPEG 35728 (SVL 65 mm). This figure is published in colour in the online version.

  • View in gallery

    Map showing the known distribution of Osteocephalus inframaculatus in Amazonian Brazil. 1. Santarém, Pará (type locality), 2. Vitoria do Xingu, Pará. The stippled lines indicate the 200 m contour line.

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