Elaphrus americanus sylvanus

Goulet, 1982

Elaphrus americanus sylvanus is a western of ground beetle in the Carabidae, described by Goulet in 1982 from Oregon. The subspecies belongs to the Elaphrus americanus , which was previously treated as a single but later recognized as comprising multiple distinct based on morphological analysis. Members of the Elaphrus are known for their strong resemblance to tiger beetles (Cicindelinae), often leading to misidentification by collectors.

Pronunciation

How to pronounce Elaphrus americanus sylvanus: /ɪˈlæf.rəs əˌmɛr.ɪˈkeɪ.nəs sɪlˈvæn.əs/

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Identification

Distinguished from the nominate E. a. americanus and from E. finitimus through morphometric analysis; the type locality is in the Coast Range of Oregon. Numerical taxonomic analysis of Mahalanobis distances and discriminant functions were used to separate this western from populations of E. americanus.

Habitat

Type locality from sylvan (forest) in the Coast Range of Oregon, 16 miles north of Powers, Coos County.

Distribution

Western North America; type locality in Oregon, Coos County. GBIF records indicate presence in Alaska and the broader USA.

Behavior

Like other Elaphrus , are ground-dwelling and active runners. The is known for rapid, skittish movement that contributes to their resemblance to tiger beetles.

Human Relevance

Members of the Elaphrus frequently confuse collectors due to their tiger -like appearance; this was recognized through detailed taxonomic revision of museum specimens.

Similar Taxa

Elaphrus americanus americanusThe nominate ; separated by morphometric analysis and geographic distribution
Elaphrus finitimusA closely related in the E. americanus complex; sympatric may show character displacement
Cicindela speciesTiger beetles share similar body form, rapid running , and often metallic coloration, leading to frequent misidentification

More Details

Taxonomic history

Originally treated as part of a broadly defined E. americanus sensu Lindroth (1961), this western was elevated to subspecific status based on numerical taxonomic analysis of morphological variation. The description represents part of a broader revision of the E. americanus complex that also recognized E. finitimus as a distinct .

Type locality

Oregon, Coos Co., 16 miles north of Powers.