Achilia crassicornis, Jeannel, 1962

Giorgio Sabella, Sergey A. Kurbatov & Giulio Cuccodoro, 2017, A revision of the Chilean Brachyglutini - Part 2. Revision of Achilia Reitter, 1890: A. crassicornis, A. tumidifrons, A. bifossifrons, and A. lobifera species groups (Coleoptera: Staphylinidae: Pselaphinae), Revue suisse de Zoologie 124 (1), pp. 119-140 : 120

Achilia crassicornis species group

Jeannel (1962: 397, 400) characterized this group as follows: elytra with 3 basal foveae; basal striae of abdominal tergite I separated at most by 1/3 of tergal width; head with broad transverse occipital hump in male; frons not narrowed anteriorly in female; male antennomere X very big and asymmetrical; copulatory pieces of aedeagus thin.

This group currently includes A. crassicornis antarctica Jeannel, 1962 ; A. crassicornis crassicornis Jeannel, 1962 ; A. obscura Jeannel, 1962 ; A. parvula Jeannel, 1962 , and A. nahuelbutae Franz, 1996 . However, as A. parvula and A. nahuelbutae appeared to belong to the humidula and the cosmoptera groups respectively, and A. crassicornis antarctica and A. obscura are here placed as junior synonyms of A. crassicornis , the only taxon left in the crassicornis species group is A. crassicornis itself.