Morphology and Chaetotaxy of larval Hydraenidae (Coleoptera) III. The genus Calobius Wollaston, 1854

Abstract

The morphology and chaetotaxy of the three larval instars of the genus Calobius Wollaston, 1854 are described and illustrated following the setal pattern of Calobius quadricollis Mulsant, 1844. The study revealed several characters on the cephalic capsule, head appendages, and the thoracic and abdominal segments that can be used to restore Calobius as a valid genus. A table showing twenty different features between the larvae of the genus Calobius and the genus Ochthebius Leach, 1815 is provided.

Keywords:

• Coleoptera
• Hydraenidae
• Calobius
• larval chaetotaxy
• phylogenetic position