Subgenus Achanius (Achanius) Erichson, 1847

(Fig. 13)

Achanius Erichson 1847: 118 .

Achanius (Achanius): Kulzer 1950: 36 (revision); Kulzer 1956: 898 (revision).

Type species: Achanius anthicoides Erichson, 1847, by monotypy.

Diagnosis. Kulzer (1950 in key) stated the humeri are not elevated and hind wings are absent. This study: metasternum 2X length of mesosternum; metacoxal width twice metacoxal length; distance between meso– and metacoxae exceeding metacoxal length but not longer than 1.5X metacoxal length.

Biology. Species of Achanius (Achanius) are apterous and have been collected under stones or using pitfall traps partly filled with water and propylene glycol (Flores et al. 2004; Lagos 2004).

Species included. Achanius anthicoides, A. bembidioides, Achanius (Achanius) castanescens Fairmaire, Achanius (Achanius) piceofuscus Fairmaire, A. minutus, Achanius (Achanius) obscurus Kulzer, Achanius (Achanius) peruensis Kulzer, Achanius (Achanius) puncticollis Kulzer, and Achanius (Achanius) angusticollis Kulzer (Kulzer 1950, 1956).