Elaphrus ruscarius
Say, 1834
Shore Ground Beetle
A of ground beetle in the Elaphrinae, described by Thomas Say in 1834. Like other members of the Elaphrus, it bears a strong resemblance to tiger beetles (Cicindelinae), which can mislead collectors. The genus is known for its preference for moist near water.
Pronunciation
How to pronounce Elaphrus ruscarius: /ɛˈlæfrəs rʌsˈkɛəriəs/
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Identification
Distinguished from true tiger beetles (Cicindelinae) by its placement in the ground beetle Elaphrinae. Members of Elaphrus share the general body form and metallic coloration of tiger beetles but differ in genitalic and other subtle morphological characters. Specific diagnostic features for E. ruscarius require examination of type material or authoritative keys.
Images
Habitat
Associated with moist environments, particularly shorelines and wet ground, consistent with the -wide preference for damp .
Distribution
Recorded from Canada and the United States in North America.
Human Relevance
Occasionally encountered by collectors due to its resemblance to tiger beetles; specimens have been noted in entomological exchanges.
Similar Taxa
- Cicindela spp.Tiger beetles share metallic coloration and body form, causing frequent misidentification; Elaphrus lacks the characteristic structure and tarsal claw of Cicindelinae.
- Other Elaphrus speciesCongeneric may require dissection or examination of male genitalia for definitive identification.