Revision of the Megasoma (Megasoma) gyas (Jablonsky in Herbst, 1785) species group (Coleoptera, Scarabaeidae, Dynastinae)

By

Prandi, Massimo
Grossi, Paschoal Coelho, 1981-
Vaz-De-Mello, Fernando Z

Type

Article

Date of Publication

2020

Original Publication

ZooKeys

Volume

999

Pages

109--145

Subjects

Cerrado , Neotropical region , new species , Scarabaeoidea , South America

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.999.53130

 

Abstract

The taxa of the genusMegasomaKirby, 1825 (Coleoptera, Scarabaeidae, Dynastinae) related toM. gyas(Jablonsky in Herbst, 1785) are revised. Megasoma (M.) gyas is recognized as a monotypic species restricted to the Caatinga biome of northeastern Brazil.Megasoma gyas rumbucheriFischer, 1968, is considered as a new synonym ofM. gyas. The “long-hornedM. gyas” is recognized as a separate polytypic species M. (M.) typhon (Olivier, 1789) with the nominative subspecies occurring through the Mata Atlântica biome of Brazil, from Bahia to São Paulo states and M. (M.) typhon prandii Milani, 2008 restricted to a small area in the state of Santa Catarina, South Brazil.Megasoma gyas porioniNagai is considered as a new synonym ofM. typhon typhon. The “short-hornedM. gyas” occurring in Minas Gerais, São Paulo, and southwestern Bahia, is recognized as a separate new species and described as M. (M.) hyperionsp. nov.The paper includes an historical research and the redescriptions of the other nominal species of the genus. Distribution maps and a key to species in the M. (M.) gyas species group (males and females) are also provided.