RHYSODIDAE

Author: John F. Lawrence.

Classification

Suborder Adephaga

Description

Antenae with 11 segments, moniliform. Antennal insertions exposed or concealed. Visible portion of procoxa globular with the trochantin concealed. Procoxal cavity externally closed and internally open. Mesocoxae separated by 0.4 to 1 coxal width, with mesocoxal cavity laterally open. Tarsal formula 5-5-5. Numberof ventrites 6 with 3 connate. Body length 5-8 mm. Elongate, glabrous. Grooves on head, pronotum and elytra, often containing dense pubescence.

Quick identification

The family Rhysodidae is a very distinctive group of terrestial Adephaga which are often placed in Carabidae but differ from carabids by a combination of widely separated metacoxae, thick and moniliform antennae, the presence of deep longitudinal grooves on the head, prothorax and elytra, which are usually filled with dense pubescence.

Genera occurring in Costa Rica

Clinidium.

© CSIRO Emtomology, 1999	© CSIRO Emtomology, 1999	© CSIRO Emtomology, 1999