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Genus Chauliognathus

Leatherwing on milkweed - Chauliognathus marginatus prob Chauliognathus - Chauliognathus marginatus Chauliognathus scutellaris Beetle - Chauliognathus marginatus Bug on a foggy morning - Chauliognathus pensylvanicus Goldenrod Soldier Beetle -(iNaturalist) - Chauliognathus pensylvanicus Arizona Beetle  - Chauliognathus profundus Chauliognathus basalis? - Chauliognathus basalis - male - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Elateriformia)
Superfamily Elateroidea
Family Cantharidae (Soldier Beetles)
Subfamily Chauliognathinae
Tribe Chauliognathini
Genus Chauliognathus
Explanation of Names
Chauliognathus Hentz 1830
Greek 'protruding jaws'
19 spp. in our area, hundreds worldwide(1)
8-14 mm
key to species in(2)
in N. America, widespread(1) but much more diverse in the south; C. pennsylvanicus and C. marginatus are widely eastern (both range into Canada), other spp. mostly in sw. US(2)(3)
Summer into fall in temperate areas
Larvae are predators. Adults of our spp. feed on pollen and nectar(1). Adults are also known to prey on other insects.
Life Cycle
They overwinter as larvae underground. There can be as many as 10 instars.
Adults are frequently found on flowers and are probably good pollinators.
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.The Chauliognathini of America north of Mexico (Coleoptera-Cantharidae). Parts 1 & 2
Fender K.M. 1964. Northwest Science 38: 52–64, 95-106.
3.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.