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Genus Rhagomicrus

Rhagomicrus bonvouloiri False click beetle ? - Rhagomicrus humeralis False click beetle ? - Rhagomicrus humeralis Eucnemid - Rhagomicrus bonvouloiri Rhagomicrus humeralis (Say) - Rhagomicrus humeralis Nice Eucnemid? - Rhagomicrus humeralis Beetle - Rhagomicrus humeralis Eucnemidae, ventral - Rhagomicrus humeralis
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 Rhagomicrus
Numbers
Approximately 27 species (including many new species) are distributed world wide. Of those, four species are found in the Nearctic region.
Size
2.5-7.0 mm long.
Identification
Metacoxal plates are parallel sided and parallel antennal grooves will distinguish the group from all other closely related genera within the tribe.


Key:

1 Anterior lateral pronotal ridge elongate..........................................................................2
1' Anterior lateral pronotal ridge very short.........................................................R. thomasi Muona

2 Bi-colored species................................................................................................3
2' Usually uni-colored species...................................................................R. bonvouloiri (Horn)

3 Head and pronotum reddish. Elytra black.......................................................R. thoracicus (Horn)
3' Apical margin of pronotum and elytrial humeri reddish............................................R. humeralis (Say)
Range
The group is distributed in the tropical and subtropical regions. However, those found in the Nearctic region are distributed largely in southeastern U.S. extending north into Canada. One species is a Florida endemic. Two are widespread. Last species was taken in Texas.
Habitat
Thrives largely in forested areas.
Season
Late May through July.
Food
Larvae thrives mainly in logs of deciduous tree species.
Life Cycle
Larva of R. bonvouloiri was described by R.L. Otto in 2012.
Print References
Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.

Otto, R.L. 2012. Eucnemid Larvae of the Nearctic Region. Part I: Description of the Larva of Rhagomicrus bonvouloiri (Horn, 1886) (Coleoptera: Eucnemidae: Melasinae: Dirrhagini), With Notes on Its Biology. The Coleopterists Bulletin 66(3): 219-223.