Stenolophus anceps
LeConte, 1857
Double-edged Harp Ground Beetle
Stenolophus anceps is a small ground beetle in the Carabidae, commonly known as the Double-edged Harp Ground Beetle. It is native to North America, with documented records from both the United States and Canada. The belongs to the Stenolophus, a group of small, often abundant carabids frequently found in agricultural and disturbed .
Pronunciation
How to pronounce Stenolophus anceps: //stɛˈnɒləfəs ˈænsɛps//
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Identification
Members of Stenolophus can be distinguished from similar small carabid by their (thread-like) and the structure of the elytral . S. anceps specifically may be separated from by subtle differences in pronotal and elytral proportions, though precise diagnostic features require examination of genitalia or reference to specialized keys. The is small-bodied, typical for the genus.
Habitat
Agricultural fields, disturbed open areas, and grassy margins. The Stenolophus is frequently associated with cultivated soils and early successional .
Distribution
North America: documented from Canada and the United States. GBIF records confirm presence in both countries, with the occurring broadly across the continent.
Similar Taxa
- Stenolophus leconteiSimilar small size and general habitus; requires examination of male genitalia or detailed pronotal/elytral proportions for reliable separation
- Stenolophus rotundatusOverlapping distribution and preferences; distinguished by subtle differences in body shape and elytral microsculpture
- Stenolophus ochropezusSympatric in many regions; separation depends on precise measurements and genitalic examination
More Details
Taxonomic note
Stenolophus anceps was described by John Lawrence LeConte in 1857. The Stenolophus is part of the tribe Stenolophini within the large Harpalinae.
Observation data
iNaturalist records approximately 110 observations of this , indicating it is encountered with moderate frequency by naturalists, though it remains less documented than some common agricultural carabids.