Other Common Names
Cedar Beetles, Cicada Parasite Beetles(1)
Synonyms and other taxonomic changes
our fauna needs revision(1)
5 spp. in our area, 25 total(1)
males 17-20 mm, females 22-25 mm(1)
antennae flabellate in males, serrate in females(1)
Click on photo to see discussion of identification of the two common eastern species, S. niger and S. petrophya.
New World, E & S Asia, Africa; our spp. (distribution poorly known)(1)
LeConte 1861 - CA-NV-ID Type
S. cribricollis Van Dyke 1923 - CA
S. niger Knoch 1801 - ne. & midw. US south to TX + so. ON
S. petrophya Knoch 1801 - e. US to FL
LeConte 1868 - AZ-TX-CO, FL Type
usually later in the season
Adults reportedly do not feed, though a recent captive report
would suggest they may feed on certain plant leaves... Larvae are ectoparasitoids of nymphal cicadas(1)
; ~17,000 eggs has been recorded from a single female S. niger
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 hickory 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.(2)
Craighead F.C. (1921) Larva of the North American beetle Sandalus niger Knoch. Proc. Entomol. Soc. Wash. 23: 44-48.
Rings R.W. (1942) The external anatomy of Sandalus niger Knoch (Coleoptera: Rhipiceridae). Ann. Ent. Soc. America. 35: 411-425.
Young F.N. (1956) Unusual abundance of Sandalus in southern Indiana. Col. Bull. 9: 74.