Ferrugiiniset

Ferrugiiniset is a taxonomic grouping proposed to classify rust-colored beetles within the order Coleoptera. The name blends ferrugi- (rust) with -iset, a Finnish plural suffix. Members are characterized by rust-brown elytra, a robust body, and distinctive sculpture on the pronotum and elytra; they are typically small to medium-sized, roughly 5–12 mm.

Geographically, Ferrugiiniset are found in temperate and boreal regions of the Northern Hemisphere, with greatest diversity in coniferous and mixed forests. They inhabit leaf litter, under bark, or in mossy substrates, often active at night or during cool, damp conditions. Larvae are presumed to develop in soil, decaying wood, or beneath bark.

Taxonomic status is debated. Some entomologists recognize Ferrugiiniset as a defined tribe or subclade within a broader beetle family, based on coloration and micromorphology; others treat it as a provisional designation awaiting molecular confirmation. Due to limited phylogenetic data, the exact limits of Ferrugiiniset and its constituent genera remain unsettled.