Pycnoglypta campbelli

Members of Pycnoglypta can be distinguished from related omaliine genera by the combination of: compact, somewhat flattened body; short elytra exposing most of the abdomen; and distinctive maxillary structures with enlarged laciniae. Specific characters for P. campbelli separation from congeners require examination of male genitalia and detailed mouthpart morphology; the species was originally distinguished from P. lurida by subtle differences in the aedeagus and the form of the lacinia.

Collection records indicate association with boreal and mixed forest environments. Specimens have been captured in leaf litter and moss samples, suggesting ground-dwelling habits in forest floor microhabitats.

Holarctic distribution confirmed for North America: Canada (Alberta, Manitoba, New Brunswick, Nova Scotia, Ontario, Quebec, Saskatchewan, Yukon Territory) and USA (Alaska, Connecticut, Illinois, Massachusetts, Michigan, Minnesota, North Carolina, New Hampshire, New Jersey, New York, Oregon, Rhode Island, Wisconsin). Published Russian (Siberian) records are considered erroneous.

Collection dates span May through September, with peak records in June and July. Activity pattern consistent with typical temperate beetle phenology.

As a member of the Staphylinidae, likely functions as a general predator or scavenger in forest floor detritus food webs, though specific ecological role has not been documented.

• Pycnoglypta luridaMost similar congeneric species; distinguished by male genitalia and lacinia structure. P. lurida has broader distribution and more southerly range records.
• Other Omaliinae genera (e.g., Omaliini)Similar general habitus of short-winged rove beetles; Pycnoglypta separated by distinctive compact body form and specialized maxillary laciniae.

• rove beetle
• Staphylinidae
• Omaliinae
• boreal
• forest floor
• leaf litter

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Beauty at Its Best | Bug Squad