Obrium glabrum

Knull, 1937

Obrium glabrum is a of longhorned beetle in the Cerambycidae, described by Josef N. Knull in 1937. It belongs to the tribe Obriini within the Cerambycinae. The species epithet "glabrum" (Latin for "smooth") suggests a relatively hairless or smooth-bodied appearance compared to . Very little specific biological information has been published for this species.

Pronunciation

How to pronounce Obrium glabrum: /ˈoʊbri.əm ˈɡlæbrəm/

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Identification

Identification to level within Obrium requires careful examination of antennal structure, pronotal shape, elytral and patterns, and genitalia. O. glabrum is distinguished from other Obrium species by its relatively glabrous (smooth, hairless) . The species was described from specimens collected in the southwestern United States. Specimens should be compared with type material or authoritative revisions of the for definitive identification.

Appearance

As a member of the Obrium, O. glabrum is a small to medium-sized cerambycid beetle. The specific epithet "glabrum" indicates a smooth, relatively glabrous (hairless) body surface. Obrium typically have elongated, somewhat parallel-sided bodies with (thread-like) that are shorter than the body length. The pronotum is usually constricted at the base, and the are often adorned with variable patterns of or coloration. Exact coloration and size details for O. glabrum specifically are not well documented in readily available literature.

Distribution

United States (southwestern region, based on type locality and related distributions). GBIF records indicate presence in North America with specific occurrences in the United States.

Similar Taxa

Obrium maculatumAnother North American Obrium ; differs in typically having more distinct maculations (spots) and greater on the
Obrium rufulumSimilar small size and general habitus; differs in coloration (rufulum = reddish) and typically more pubescent body surface
Other Obriini genera (e.g., Necydalis, Phytoecia)Similar elongated body form and antennal structure; distinguished by tribal and generic characters of the pronotum, prosternal process, and antennal insertion

More Details

Taxonomic history

Described by Josef N. Knull in 1937. Knull was a prominent American coleopterist who described numerous cerambycid from North America, particularly from the southwestern United States and Mexico. The Obrium currently contains approximately 20 species distributed primarily in the Nearctic and Palearctic regions.

Etymology

The specific epithet "glabrum" is Latin for "smooth" or "hairless," referring to the relatively glabrous body surface that distinguishes this from its more pubescent .