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
Derobrachus brevicollis is known from the southeast NC-AL-North FL, while the recently described
D. thomasi is found in south-central Florida. Three other spp. are found in the western US;
D. geminatus (=forreri), D. hovorei (=geminatus auct) and
D. leechi.
Bad links in ID section to Cerambycids of Florida replaced with internal BugGuide links to genera 7/19/08 (P. Coin).
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.
2007. Santos-Silva, A. Revisao do genero Derobrachus Audinet-Serville, 1832 (Coleoptera, Cerambycidae, Prioninae). Arquivos de Zoologia, 38(1): 1-94.
