Darkling Beetle
( Coelocnemis sp. )


2005-0515-01100108-COL00461-Coelocnemis_sp[1658h31s,F,A,walkrun]{EXD}-G.jpg

IDENTIFICATION
Identification:Coelocnemis sp.
(Mannerheim, 1843)
Common Name:Darkling Beetle
Life Stage:A

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Holometabola
Order:Coleoptera
Suborder:Polyphaga
Family:Tenebrionidae
Subfamily:Stenochiinae
Tribe:Cnodalonini
Genus:Coelocnemis
Taxon Code:COL00461

LOCATION DETAILS
Location
Knowland Park, Knowland Park, Oakland
County:Alameda County
ECI Site#:CA01100108

RECOGNITION
Coelocnemis, like Eleodes, stand on their heads and emit defensive secretions from the tip of their abdomen, but are readily distinguished from Eleodes by having two rows of fine, golden brown hairs on the lower half of the inside margin of the hind tibiae.
Body Length
Males: ~16 mm. Females: ~20 mm.
Similar Taxa
Eleodes sp. also are large, black beetles in arid habitats. Both have similar defensive behaviors.

BIOLOGY
Food
Vegetative matter.
Habitat
May be seen walking in open ground and is common beneath ground debris in woodlands and meadows.
Active Period
Adults are active year round.

HABITAT
May be seen walking in open ground and is common beneath ground debris in woodlands and meadows.

CREDITS
Photographer
Eddie Dunbar

REFERENCES
  • BugGuide [ IMAGES ]
  • Slobodchikoff, C. N.. (1978). Experimental Studies of Tenebrionid Beetle Predation by Skunks. Behaviour, 66(3/4), 313?322. Retrieved from http://www.jstor.org/stable/4533916


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