Pasimachus obsoletus
LeConte, 1846
Obscure Warrior Beetle
Pasimachus obsoletus is a ground beetle in the Carabidae, first described by John Lawrence LeConte in 1846. It belongs to a commonly referred to as "Warrior Beetles" due to their large, formidable . The epithet "obsoletus" refers to its somewhat worn or indistinct appearance. Like other members of Pasimachus, it is a predatory active on the ground surface.
Pronunciation
How to pronounce Pasimachus obsoletus: //pæsɪˈmækəs ˌɒbsəˈliːtəs//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Members of Pasimachus are distinguished from other ground beetles by their large, curved and robust, somewhat flattened body form. Pasimachus obsoletus specifically may be recognized by features associated with its epithet, suggesting less distinct or more subdued markings compared to . The is also noted for occasional purple or blue iridescence on some individuals.
Distribution
United States; North America.
Ecological Role
Predatory ground beetle, likely contributing to control of soil-dwelling .
Similar Taxa
- Pasimachus quadricollisAlso a North American Warrior , distinguished by its quadrate (square) pronotum, earning it the "Square-necked Warrior Beetle."
- Pasimachus depressusAnother congeneric , sometimes called "blue-margined ground beetle," noted for blue marginal coloration on the .
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
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