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Genus Sandalus

What type of Beetles? - Sandalus niger - male - female Cedar Beetle - Sandalus niger - female Sandalus petrophya - female Sandalus niger, early record - Sandalus niger Sandalus petrophya? - Sandalus niger Sandalus - S. randyi? - Sandalus randyi - male Sandalus niger - female Sandalus niger - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Elateriformia)
Superfamily Dascilloidea
Family Rhipiceridae (Cicada Parasite Beetles)
Genus Sandalus
Other Common Names
Cedar Beetles, Cicada Parasite Beetles(1)
Synonyms and other taxonomic changes
genus under revision
Explanation of Names
Sandalus Knoch 1801
5 spp. in our area, 25 total(1)
♂ 17-20 mm, ♀ 22-25 mm(1)
antennae flabellate in males, serrate in females(1)
key to eastern spp. in (2)
New World, E & S Asia, Africa(1)
usually later in the season
Adults reportedly do not feed, though a recent captive report suggests they may feed on certain plant leaves... Larvae are ectoparasitoids of nymphal cicadas(1)
Life Cycle
hypermetamorphosis(1); ~17,000 eggs has been recorded from a single female S. niger (Rings 1942)
come to lights; infrequently found but may be seen in large numbers during the day, indicating pheromone involvement(1)
One day in late September near Bloomington, IN, 12 specimens were collected on trunks or in flight in 1 hour, where none were during previous years: the beetles likely parasitized the brood of periodical cicadas which had emerged the previous year.(3)
Print References
Craighead F.C. (1921) Larva of the North American beetle Sandalus niger Knoch. Proc. Ent. Soc. Wash. 23: 44-48.
Rings R.W. (1942) The external anatomy of Sandalus niger Knoch (Coleoptera: Rhipiceridae). Ann. Ent. Soc. Am. 35: 411-425.
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
2.A new species of Sandalus Knoch (Coleoptera: Rhipiceridae), with an updated key to the species of the Eastern USA
Schnepp K.E., Powell G.S. 2018. Col. Bull. 72: 241-245.
3.Peterson Field Guides: Beetles
Richard E. White. 1983. Houghton Mifflin Company.