Revista Brasileira de Entomologia Revista Brasileira de Entomologia
Rev Bras Entomol 2016;60:248-54 - Vol. 60 Núm.3 DOI: 10.1016/j.rbe.2016.03.002
Biology, Ecology and Diversity
Flight patterns and sex ratio of beetles of the subfamily Dynastinae (Coleoptera, Melolonthidae)
Larissa Simões Corrêa de Albuquerquea,, , Paschoal Coelho Grossib, Luciana Iannuzzia
a Universidade Federal de Pernambuco, Departamento de Zoologia, Recife, PE, Brazil
b Universidade Federal Rural de Pernambuco, Departamento de Agronomia/Proteção de Plantas, Recife, PE, Brazil
Recebido 08 Julho 2015, Aceitaram 24 Março 2016
Abstract

Dynastinae is one of the most representative subfamilies of Melolonthidae (Scarabaeoidea) and has considerable ecological importance due mainly to interactions with plants of the families Araceae and Annonaceae. This relationship has led to the evolution of nocturnal activity patterns, which are influenced by environmental conditions. In the present study, abiotic factors were investigated to comprehend the influence on the flight patterns and identify the sex ratio of beetles from this subfamily. A study was conducted at Campo de Instrução Marechal Newton Cavalcanti in northeastern Brazil between December 2010 and November 2011. Thirteen species of Dynastinae were identified, most of which were from the genus Cyclocephala. Abundance and richness were greater in the dry season. Six species exhibited peak flight activity at specific periods of the night. More females than males were recorded for Cyclocephala distincta and C. paraguayensis. The present findings suggest that rainfall reduces the flight activity of these beetles and different time schedules may be related to mating behavior, foraging behavior and the avoidance of interspecific resource competition.

Keywords
Brazilian Atlantic forest, Cyclocephalini, Light trap, Nocturnal beetles
Rev Bras Entomol 2016;60:248-54 - Vol. 60 Núm.3 DOI: 10.1016/j.rbe.2016.03.002