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Subfamily Dorcatominae

Smaller anobiid - Byrrhodes intermedius Dorcatoma pupa - Dorcatoma pallicornis Id request - Caenocara another Byrrhodes intermedius - Dorcatoma setulosa Puffball or not, that is the question Beetle I - Petalium Death-watch beetle of sorts... - Calymmaderus Petalium? - Petalium
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Dorcatominae
Synonyms and other taxonomic changes
Mesocoelopodinae (Tricoryninae) is usually treated as a distinct subfamily, but evidence for that arrangement is rather weak
Explanation of Names
Dorcatominae C.G. Thomson 1859
Numbers
5 tribes, with 11 genera in our area and 45 genera total; the most species-rich subfamily in NA
Size
contains many small species; maximum size is ~4 mm
Identification
Body short, often +/- ball-like, or moderately elongate, rarely cylindrical (genus Petalium only). Antennae usually with three terminal segments enlarged and triangular, rarely rather parallel-sided, or branched. In two genera, the antennae are serrate, with the terminal segments unmodified (Mesocoelopus, Neosothes).

Antennae usually completely hidden in retraction, rarely last segments partly visible (genus Calymmaderus).
Legs retracted in grooves of the ventral surface, like in pill beetles (Byrrhidae).
Range
world-wide
Food
the group contains, besides wood-borers, many fungivores and species breeding in dry, non-woody plants