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Genus Pasimachus

unidentified beetle - Pasimachus Unknown stag beetle? - Pasimachus - male - female Beetle - Pasimachus marginatus Shiny black beetle with huge jaws and blue-purple edges - Pasimachus Possibly Pasimachus floridanus? - Pasimachus subsulcatus Pasimachus - Pasimachus elongatus Carabidae - Pasimachus Pasimachus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Scaritinae
Tribe Pasimachini
Genus Pasimachus
Explanation of Names
Pasimachus Bonelli 1813
'total fighter'
Numbers
11 spp. in 3 species-groups (all in the nominotypical subgenus) in our area, 32 spp. in 4 subgenera total(1)
Size
21-40 mm
Identification
keys to spp. in(2)(3)(4)(5)(6)
A common difficulty is telling apart the sympatric P. depressus vs P. elongatus. The former is much more robust/broad, most with body length ≥ 28 mm vs ≤ 26 mm for most "elongatus". The most reliable external feature is the shape of the prosternal process (conical vs roundish). In P. elongatus, the male metatibia with tuft of golden hairs in distal third (lacking in male depressus)
Range
North and Middle America; in our area, most diverse in the south, with just one sp. (P. elongatus) reaching Canada (MB-AB)(1)
Habitat
Typically, leaf litter in forests
Food
caterpillars, other larval insects
See Also
Lucanidae (easily distinguished by their geniculate clubbed antennae)