Hydrophilus (Dibolocelus) palpalis (Coleoptera, Hydrophilidae, Hydrophilinae): descrição dos estágios imaturos

Abstract

ABSTRACT. Hydrophilus (Dibolocelus) palpalis (Coleoptera, Hydrophilidae, Hydrophilinae): description of the immature stages. Egg case, larvae and pupa of Hydrophilus (Dibolocelus) palpalis are described and illustrated. The aquaria-terraria method was used to rear immature instars in the laboratory.

Phylogeny, evolution and classification of the giant water scavenger beetles (Coleoptera: Hydrophilidae: Hydrophilini: Hydrophilina)

“…distribution of abdominal pubescence and body convexity) are shown not to be diagnostic of Dibolocelus in the present analysis. The differences in larval morphology of Dibolocelus were originally based on a single species (D. ovatus), although a second species (D. palpalis) appears to confirm several of those differences (de Oliveira et al, 2004). As 'different' as the immature stages of these species may be from the few Hydrophilus species with known larvae, it has not been shown that (1) the observed differences are characteristic of most Dibolocelus species or (2) that these are not simply autapomorphies of Dibolocelus.…”