Deinopteroloma subcostatum
(Mäklin, 1852)
weakly-ribbed ocellate rove beetle
Deinopteroloma subcostatum is a rove beetle to the Pacific Northwest of North America. It was originally described as Lathrimaeum subcostatum by Mäklin in 1852 and later transferred to Deinopteroloma. The is distinguished by its large, robust body with contrasting black and gold coloration and distinctive feathery .
Pronunciation
How to pronounce Deinopteroloma subcostatum: //ˌdaɪˌnɒptəˈroʊləˌmə ˌsʌbkoʊsˈtætəm//
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Identification
Distinguished from other Pacific Northwest rove beetles by its combination of large size, robust body shape, and distinctly feathery . The black and gold coloration and deeply segmented are additional diagnostic features. Separated from congeneric by subtle differences in elytral and body proportions; precise identification requires reference to the key in Newton 1985.
Images
Habitat
Found under wet wood debris and rotting leaves in forested areas. Moist, decaying organic matter in woodland environments.
Distribution
to the Pacific Northwest of North America. Recorded from Alaska, Washington, Oregon, and California in the United States, and from Alberta and British Columbia in Canada.
Similar Taxa
- Other Deinopteroloma speciesD. humerale and D. pictum also occur in western North America; distinguished by elytral , body proportions, and color pattern details per Newton 1985 key
- Typical slender rove beetles (Staphylininae and other subfamilies)D. subcostatum's robust, broad body and feathery contrast with the thread-like antennae and elongate form of most staphylinids
More Details
Taxonomic history
Originally described as Lathrimaeum subcostatum by Mäklin in 1852. Transferred to Deinopteroloma by Newton 1985 when the was moved from Silphidae to Staphylinidae (Omaliinae). The genus Mathrilaeum was synonymized with Deinopteroloma in the same revision.
Systematic position
Belongs to the Anthobium group of within the tribe Anthophagini, Omaliinae. This placement reflects its intermediate between typical rove beetles and the historically associated carrion beetles (Silphidae).