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Genus Microrhagus

Microrhagus audax - female False Click Beetle - Microrhagus subsinuatus beetle - Microrhagus breviangularis Click Beetle IMG_2616 - Microrhagus subsinuatus Microrhagus subsinuatus Beetle - Microrhagus audax Beetle - Microrhagus carinicollis Brown beetle, small, on leaf - Microrhagus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Elateroidea (Click, Firefly and Soldier Beetles)
Family Eucnemidae (False Click Beetles)
Subfamily Melasinae
Tribe Dirhagini
Genus Microrhagus
Synonyms and other taxonomic changes
(=Arhagus)
(=Aulacosternus)
(=Dirhagus)
(=Dichodirhagus)
(=Eurhagus)
(=Hyporhagus)
Numbers
5 Nearctic spp., (Otto 2013) (approximately 107 species world wide)
Size
2.5-7.0 mm long.
Identification
The group is best identified by the closely spaced antennal sockets on the frons.


Key:

1 Elongate posterior lateral pronotal ridge from the hind angles....................................................2
1' Short posterior lateral pronotal ridge from the hind angles...................................M. pectinatus LeConte

2 Anterior lateral pronotal ridge short.............................................................................3
2' Anterior lateral pronotal ridge longer.......................................................M. subsinuatus LeConte

3 Bi-colored legs. Antennae dark brown. Antennae weakly serrate...............................M. triangularis (Say)
3' Uni-colored legs. Antennae yellowish. Antennae moderately serrate...................................M. audax Horn
Range
Mainly distributed throughout eastern U.S. and Canada. One eastern species have been taken in the Pacific Northwest region.
Habitat
Largely found in forested areas.
Season
Mid June through August.
Food
Larvae have been found in logs of deciduous tree species.
Life Cycle
Unknown.
Print References
Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.
Otto, R.L. 2013. A new North American species of Microrhagus Dejean, 1833 (Coleoptera: Eucnemidae), with a key to the Nearctic species. Insecta Mundi 0307: 1-6. Full PDF