Filogenia e taxonomia de Dinelytron Gray, 1835, com implicações em Prisopodini (Phasmatodea: Prisopodidae)

Abstract

Dinelytron has many problems for identifications of its species, such as types lost, lack of illustration on the original descriptions as well as succinct descriptions. This difficult the species identification as well as the establishment of the boundaries between Prisopodini genera. To solve this, 72 Dinelytron, 28 Damasippus Stål, 1875, 64 Prisopus Fargeau & Serville, 1828 and 5 de Melophasma Redtenbacher, 1906 specimens, types and non-types specimens had their morphology studied to propose a phylogenetic hypothesis. Through an exhaustive search for a maximum parsimony tree, carried out at TNT software, six trees were founded and a strict consensus between them was made. The strict consensus tree contains Dinelytron, Damasippus and Prisopus compounding a monophyletic clad as well as showing that the genera are not congeneric. As taxonomic result five new species were described from Brazil: Dinelytron betinho sp. n., from Minas Gerais, Viçosa; Dinelytron leukommatos sp. n., from Pernambuco, Recife; Dinelytron olive sp. n., from Espírito Santo, Sooretama; Dinelytron ramusculus sp. n., from Rio de Janeiro, Rio de Janeiro and Dinelytron trimaculatus sp. n., from Rio de Janeiro, Itatiaia.The following nomenclatural acts were proposed: Dinelytron grylloides Gray, 1835, neotype pres. desig.; Dinelytron unilineatus (Redtenbacher, 1906) n. comb., lectotype and paralectotype pres. desig. and Prisopus villosipes (Redtenbacher, 1906) n. comb.. A pictorial identification key for Prisopodini genera and Dinelytron species is presented. Prisopodini resulted in a monophyletic clad, as well as the three genera included, with the following topology (Prisopus + (Damasippus + Dinelytron)).