Oxyporus (Oxyporus) major, Gravenhorst, 1806

Tokareva, Alexandra, Solodovnikov, Alexey & Konstantinov, Fedor, 2020, Immature stages and biology of the enigmatic oxyporine rove beetles, with new data on Oxyporus larvae from the Russian Far East (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 60 (1), pp. 245-268 : 261

Оxyporus (Oxyporus) major Gravenhorst, 1806

Published data. GOODRICH & HANLEY (1995):description of L3; CAMPBELL (1969): distribution.

Larval morphology. El1 located medial to uppermost stemmata; head seta L4 missing; labral seta Lm3 missing; pronotum with A1–A4 and P1–P8 setae; mesonotum with A1–A7, L1–L5, and P1–P6 setae; metanotum with A1–A7, L1–L4, and P1–P6 setae; abdominal tergum I without membrane setae and A1–A4.

Development. One male and two females were collected with their host fungi, two mature larvae were found, 14 days after collection of parental adults new fully pigmented adults were found.

Behavior. Larvae were usually found in cylindrical tunnels in basidiocarps, which extended to a chamber in the central part of a cap. The presence of a single female of O. major in each basidiocarp that contained either eggs or larvae was interpreted by GOODRICH & HANLEY (1995) as brood chamber guarding. Adults and larvae were available from June to October, most of which were collected in September.