Biological Aspects of Leucothyreus aff conquisitor (Ohaus, 1924) (Coleoptera: Melolonthidae) / Biological Aspects of Leucothyreus aff conquisitor (Ohaus, 1924) (Coleoptera: Melolonthidae)

Elias Soares Gomes, Sérgio Roberto Rodrigues


The biological aspects and occurrence of members of the genus Leucothyreus Macleay, are little investigated, therefore, studies were conducted in the municipality of Aquidauana, Mato Grosso do Sul State, Brazil, to analyze the occurrence and life-cycle duration of Leucothyreus aff. Conquisitor (Ohaus, 1924). Adults were captured in a light trap. Afterwards, they were sexed and couples were isolated in the laboratory for reproduction. The biological studies started from eggs under laboratory conditions. In the field, we observed that adults were collected mostly in warmer and wetter periods, from October to March. The embryonic period of L. aff. conquisitor lasted17.0 days, the 1st, 2nd and 3rd instars lasted, 23.5, 30.4, and 84.5 days. The pupal stage lasted 26.3 days and the egg to adult period was completed in 184.5 days on average. These results suggest that L. aff. conquisitor can be characterized a univoltine specie.


Biology, Ecology, Geniatini, Scarab beetle, Tropical beetle.

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