Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Tribe Prionini

Prionus californica - Prionus californicus - male Root Borer - Orthosoma brunneum Palo Verde root borer - Derobrachus hovorei - female bl - Orthosoma brunneum Big Beetle - Prionus laticollis Prionus - Prionus californicus - male - female Hardwood Stump Borer? - Prionus laticollis Longhorn beetle ? - Prionus californicus
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
Identification
Partial key to genera (1), (other print references):
1-Robust, segments of antennae often overlapping, tips of apical segments produced into lobes ......... Prionus
2-Elongated, sides almost parallel; apex (tip) of each antennal segment simple:
2a-Antennomere 3 distinctly longer than 1 and 2 combined, about as long as 4 and 5 together (left) ......... Derobrachus
2b-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.
  
Print References
Dillon and Dillon, p. 576 (1)
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.
Works Cited
1.A Manual of Common Beetles of Eastern North America
By Dillon, Elizabeth S., and Dillon, Lawrence