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BugGuide Gathering
Smoky Mountains
University of Tennessee Biological Field Station
August 8-10, 2008
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Photos from the last gathering (Minnesota 2007)

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Genus Derobrachus

Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Longhorned Beetles)
Subfamily Prioninae
Tribe Prionini
Genus Derobrachus
Identification
Eleven fimbriate antennomeres (antenna segments). Similar to Orthosoma, but can be differentiated as follows;

Antennomere 3 distinctly longer than 1 and 2 combined,
about as long as 4 and 5 together (left) ......... Derobrachus

Antennomere 3 equal in length to 1 and 2,
shorter than 4 and 5 (right) ............................. Orthosoma

(Note: Antennomere (Antenna segment) 2 is greatly reduced in both)

Remarks
D. brevicollis is known from the southeast AL-NC-FL. Three other spp. from the west; D. geminatus (=forreri), D. hovorei (=geminatus auct) and D. leechi.
Print References
1996. Chemsak, A.J. Illustrated Revision of the Cerambycidae of North America. Vol. I, Subfamilies Parandrinae, Spondylidinae, Aseminae, Prioninae. Wolfsgarden Press, Burbank, ix+150pp., 10 pls.

1962. Linsley E.G. The Cerambycidae of North America. Part II. Taxonomy and classification of the Parandrinae, Prioninae, Spondylinae and Aseminae. Univ. Calif. Publ. Entomol., 19:1-102, 1 pl., 34 figs.