Trigonurus crotchii

LeConte, J. L., 1874

Trigonurus crotchii is a of rove beetle in the Staphylinidae, Trigonurinae. It is one of the few described species in the Trigonurus, a group characterized by distinctive morphological features that set them apart from other staphylinid lineages. The species was described by J. L. LeConte in 1874 and is known from western North America.

Pronunciation

How to pronounce Trigonurus crotchii: /trɪˈɡoʊnərəs ˈkrɒtʃaɪ/

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Identification

Members of Trigonurus can be distinguished from other Staphylinidae by their compact, somewhat rounded body form and reduced that leave much of the exposed, typical of the Trigonurinae. Specific diagnostic features for T. crotchii require examination of detailed morphological characters including antennal structure and abdominal segmentation; precise identification typically requires comparison with or keys.

Distribution

Recorded from western North America including British Columbia (Canada), California, Oregon, and Washington (USA).

Similar Taxa

  • Other Trigonurus speciesThe Trigonurus contains few described ; T. crotchii may be confused with based on general habitus, requiring detailed examination of genitalic and other fine morphological characters for separation.
  • Other Trigonurinae generaMembers of the Trigonurinae share the characteristic compact body and reduced ; differentiation relies on antennal structure, body proportions, and other subtle morphological details.

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