Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Hydrophilidae - Berosus

Hydrophilidae - Berosus
Molino Basin, Pima County, Arizona, USA
September 29, 2010
Size: 6 mm

Moved from ID Request.

hard to key out without detailed shots of various parts of underside (metasternal plate, terminal abdominal segments). The pronotal markings may be unique for this species, but several have paired dark maculae. In 1963, van Tassell did a key to the AZ species (Coleopterists Bulletin).