Ciid-beetle
Guides
Cis boleti
Cis boleti is a minute ciid beetle (2.8–4 mm) with uniform brown coloration. It inhabits the fruiting bodies of polypore fungi, including Piptoporus betulinus, Trametes, and Coriolus versicolor. The species is difficult to distinguish from closely related Cis species without examination of male genitalia. Its feeding activity reduces the reproductive fitness of host fungi by damaging the spore-producing hymenium.