Library-pest
Guides
Falsogastrallus
Falsogastrallus is a genus of small anobiid beetles in the family Ptinidae, established by Pic in 1914. The genus contains at least three described species, with F. sauteri documented as a significant pest of books and library materials in Taiwan. Adults are minute (1.5–3.5 mm), reddish brown to dark brown, with dense grayish pubescence. Larvae are C-shaped borers that tunnel through book hardcovers, particularly cardboard edges, and construct frass walls for pupation.
Gastrallus
Gastrallus is a genus of beetles in the family Ptinidae containing nearly 100 described species. The genus has a nearly worldwide distribution, with the Palearctic realm harboring the greatest diversity. Several species are significant pests of cultural heritage materials, particularly in library and archive environments.
Mezium affine
shiny spider beetle, northern spider beetle, hood spider beetle
Mezium affine is a small beetle species in the family Ptinidae, commonly known as the shiny spider beetle or northern spider beetle. It is widely distributed across the Northern Hemisphere and has been introduced to Australia. The species is notable for its highly convex, oval body shape that gives it a spider-like appearance, and its larvae are significant pests of stored food products and organic materials.