Atomariinae

Atomariinae can be distinguished from other Cryptophagidae subfamilies by genitalic characters, particularly the structure of the male aedeagus and female spermatheca. Members are typically small (1-3 mm), oval to elongate-oval beetles with relatively short antennae. The subfamily includes the genus Atomaria, which is one of the largest genera in Cryptophagidae and can be recognized by its compact body form and distinctive antennal club.

Species in this subfamily are found in habitats where fungi occur, including decaying plant matter, leaf litter, under bark, and in association with moldy stored products. Some species inhabit bird and mammal nests.

The subfamily has a worldwide distribution, with species recorded across North America, Europe, Asia, and other regions. Individual genera show varying geographic ranges.

Feeding habits center on fungal material, including hyphae, spores, and fruiting bodies. Some species have been reported from moldy stored food products.

As mycophagous organisms, members of Atomariinae contribute to nutrient cycling by consuming and breaking down fungal biomass. They form part of the community of small invertebrates inhabiting decaying organic matter.

Some species occasionally become pests in stored food facilities, particularly where products have become moldy. The genus Atomaria includes species of minor economic significance in this context.

• CryptophaginaeAnother subfamily of Cryptophagidae; distinguished from Atomariinae by differences in genitalic morphology and often by subtle external characters such as antennal structure and body proportions
• CaenosceliniTribe within Cryptophagidae; differs from Atomariinae in male genitalic characters and habitat preferences, with many species associated with coniferous forests

• mycophagous
• stored product pests
• fungus beetles

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• NCBI Taxonomy
• Catalogue of Life