Description of the mature larva of Derovatellus lentus (Coleoptera: Dytiscidae)

Abstract

The mature (third instar) larva of Derovatellus lentus (Wehncke, 1876) is described and illustrated, with emphasis on the morphometry and chaetotaxy of the head, legs, abdominal segment VIII and urogomphi, as a complement of a previous description of the first two instars. Differences between the larvae of Derovatellus Sharp, 1882 and Vatellus Aubé, 1837 are discussed.