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Genus Sphenophorus - Billbugs

Tule Billbug - Sphenophorus aequalis Billbug - Sphenophorus australis Billbug - Sphenophorus venatus Brown snouted beetle - Sphenophorus gentilis Id request - Sphenophorus coesifrons Weevil ID - Sphenophorus cicatristriatus Black Billbugs with orange tibiae - Sphenophorus imus Billbug - Sphenophorus sp ? - Sphenophorus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Dryophthorinae
Tribe Rhynchophorini
Genus Sphenophorus (Billbugs)
Numbers
White, p. 324, lists 71 spp. (1)
Size
Circa 5-15 mm
Identification
Large, robust, elongate-ovate. Body mostly smooth, but often covered with a crust.
Range
Eastern and western North America
Habitat
Fields, wet areas, with host plants.
Season
Spring-fall, most species spring, summer (North Carolina)
Life Cycle
Larvae feed on grasses and sedges.
Remarks
Formerly genus name was Calendra.

The name is from spheno, Greek wedge plus phorus Greek bearing. (Based on Internet searches.)
Print References
Dillon, p. 798 (2)
White, pp. 322-324, fig. 142 (1)
Brimley, p.245 (3)
Salsbury, p. 250--photograph (4)
Works Cited
1.Peterson Field Guides: Beetles
By Richard E. White
2.A Manual of Common Beetles of Eastern North America
By Dillon, Elizabeth S., and Dillon, Lawrence
3.Insects of North Carolina
By C.S. Brimley
4.Insects in Kansas
By Glenn A. Salsbury and Stephan C. White