Coelocnemis punctata
LeConte, 1854
Coelocnemis is a in the , one of seven in the Coelocnemis found in western North America and adjacent southern Canada. The genus is characterized by distinct parallel of on the inner surface of the , a feature used to distinguish it from the superficially similar genus Eleodes. are flightless, with that reduce , and are typically associated with pine forests and oak-conifer woodlands rather than desert .
Pronunciation
How to pronounce Coelocnemis punctata: //sɛ.lɔːkˈnɛ.mɪs pʌŋkˈtɑː.tə//
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Identification
Coelocnemis can be distinguished from the similar Eleodes by the presence of distinct, parallel of on the inner surface of the —Eleodes lacks this feature. The is generally broader and more angular than in Eleodes. Both genera are flightless with and exhibit defensive headstand , so behavior alone is not diagnostic.
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Habitat
Pine forest and oak-conifer woodlands; typically found in or under rotten logs. Unlike Eleodes, which is more characteristic of barren desert , Coelocnemis are associated with forested environments.
Distribution
Western United States and adjacent southern Canada. Specific distribution details for C. are not well documented beyond the general range of the .
Seasonality
are active during cooler periods, wandering at night to avoid desiccation and overheating. Hibernates in small groups in dry, protected .
Diet
feed on detritus, lichens, , and seeds.
Life Cycle
resemble large but are distinguished by a pair of hook-like prongs at the rear, accompanied by smaller behind the prongs. can live at least three years.
Behavior
wanderer, active in cool conditions to prevent and overheating. Performs defensive headstand when threatened, secreting smelly defensive chemicals from abdominal glands. Hibernates in small groups in dry, protected locations.
Ecological Role
; feeds on detritus and , contributing to in forest .
Human Relevance
None documented. Not a .
Similar Taxa
- EleodesSuperficially similar large black , but Eleodes lacks the parallel of on the inner and is more typical of barren desert rather than pine-oak woodlands.