Formica staerckei BETREM, 1960

Formica nigricans var. staerckei BETREM, 1960 [description, zoogeography]

It was described from a gyne collected by E. Wasman on 30 May 1885 near Castle Exaten at Baexem (Netherlands). BETREM (1960), using low-resolution microscopes, mentioned hairy eyes, absence of long hairs on head, a “practically hairless” mesosoma, and a matt surface of scutellum and gaster. This corresponds to the P-morph of Formica pratensis . The type specimen should exist in NHM Maastricht but was not available for investigation.