The phylogeny of the Casque-headed Treefrogs (Hylidae: Hylinae: Lophyohylini)

BLOTTO, BORIS; LYRA, MARIANA; MONICA C.S. CARDOSO; MIGUEL TREFAUT RODRIGUES; IURI RIBEIRO DIAS; EUVALDO MARCIANO JR.; FRANCISCO DAL VECHIO; VICTOR G.D. ORRICO; REUBER A. BRANDAO; CLODOALDO LOPES DE ASSIS; AMANDA S.F. LANTYER-SILVA; MIKE G. RUTHERFORD; GIUSSEPE GAGLIARDI-URRUTIA; MIRCO SOLE; DIEGO BALDO; IVAN NUNES; RODRIGO CAJADE; AMBROSIO TORRES; TARAN GRANT; KARL-HEINZ JUNGFER; HELIO R. DA SILVA; CELIO F.B. HADDAD; JULIAN FAIVOVICH

CLADISTICS (PRINT)

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2020

0748-3007

The South American and West Indian Casque-headed Treefrogs (Hylidae: Hylinae: Lophyohylini) include 85 species. These are notably diverse in morphology (e.g. disparate levels of cranial hyperossification) and life history (e.g. different reproductive modes, chemical defences), have a wide distribution, and occupy habitats from the tropical rainforests to semiarid scrubland. In this paper, we present a phylogenetic analysis of this hylid tribe based on sequence fragments of up to five mitochondrial (12S, 16S, ND1, COI, Cytb 4 ) and six nuclear genes (POMC, RAG-1, RHOD, SIAH, TNS3, TYR). We included most of its species (> 96%), in addition to a number of new species. Our results indicate: (i) the paraphyly of Trachycephalus with respect to Aparasphenodon venezolanus; (ii) the nonmonophyly of Aparasphenodon, with Argenteohyla siemersi, Corythomantis galeata and Nyctimantis rugiceps nested within it, and Ap. venezolanus nested within Trachycephalus; (iii) the polyphyly of Corythomantis; (iv) the nonmonophyly of the recognized species groups of Phyllodytes; and (v) a pervasive low support for the deep relationships among the major clades of Lophyohylini, including C. greeningi and the monotypic genera Itapotihyla and Phytotriades. To remedy the nonmonophyly of Aparasphenodon, Corythomantis and Trachycephalus, we redefined Nyctimantis to include Aparasphenodon (with the exception of Ap. venezolanus, which we transferred to Trachycephalus), Argenteohyla and C. galeata. Additionally, our results indicate the need for taxonomic work in the following clades: (i) Trachycephalus dibernardoi and Tr. imitatrix; (ii) Tr. atlas, Tr. mambaiensis and Tr. nigromaculatus; and (iii) Phyllodytes. On the basis of our phylogenetic results, we analyzed the evolution of skull hyperossification and reproductive biology, with emphasis on the multiple independent origins of phytotelm breeding, in the context of Anura. We also analyzed the inter-related aspects of chemical defences, venom delivery,phragmotic behaviour, co-ossification and prevention of evaporative water loss.