Amphibia, Anura, Cycloramphidae, Proceratophrys avelinoi Mercadal de Barrio and Barrio, 1993: distribution extension and distribution map (original) (raw)
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The chondrocranium and hyobranchial morphology are described for the tadpoles of five species of Proceratophrys Miranda-Ribeiro. The chondrocranium of P. appendiculata, P. boiei, P. laticeps and P. tupinamba are very similar and can be distinguished from that of P. cristiceps by: 1) less developed processus muscularis; 2) thinner palatoquadrate; 3) broadest ethmoidal region; 4) longer cornua trabeculae; and 5) morphology f the suprarostral cartilages. A morphological variation among Proceratophrys boiei is described. It reveals the existence of at least three distinct evolutionary lineages under this name. A brief comparison with other cycloramphid species is also provided.
ABSTRACT. We redescribe Proceratophrys cristiceps and describe two new allied species, constituting the northernmost record of that group for the Atlantic Forest remnants. In addition to the morphometric differences, the characteristics of size, snout shape, head width, tympanum, interocular transverse crest of tubercles, canthal crest, frontoparietal crest, outer metacarpal tubercle, webbing formulae, inner metacarpal tubercle, blotches on venter, were used to diagnose the species. The distribution of P. cristiceps is restricted to eastern Brasil, from Rio Grande do Norte to the state of Bahia, and both new species are only known from the type locality in the state of Ceará. Key-words: Proceratophrys cristiceps, P. aridus, P. caramaschii, geographic distribution, taxonomy.