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Species Cicindela duodecimguttata - Twelve-spotted Tiger Beetle

Twelve-Spotted Brown Tiger Beetle - Cicindela duodecimguttata Cicindela duodecimguttata? - Cicindela duodecimguttata Tiger Beetle - Cicindela duodecimguttata Tiger Beetle IMG_4375 - Cicindela duodecimguttata Tiger Beetle - Cicindela duodecimguttata Tiger Beetle sp. - Cicindela duodecimguttata Cicindela duodecimguttata - male Cicindela duodecimguttata - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Cicindelinae (Tiger Beetles)
Tribe Cicindelini (Flashy Tiger Beetles)
Genus Cicindela (Temperate Tiger Beetles)
Species duodecimguttata (Twelve-spotted Tiger Beetle)
Synonyms and other taxonomic changes
formerly considered a subspecies of C. repanda
Explanation of Names
Species name means "twelve-spotted" (1).
Numbers
One of 84 Nearctic species in the genus.
Size
body length 12-15 mm.
Identification
The usual bands are often broken into spots - 12 spots on some individuals. On other individuals, the bands may be more intact and there will be fewer than 12 spots or marks. The shoulder marking (humeral lunule), whether entire or broken, is well-separated from the middle band or middle spots.
Range
southern Canada and United States east of the Rockies but absent from Florida and the coastal southeast. Much the same range as C. repanda, and often found with it.
Habitat
Margins of streams, rivers, ponds. Adults and larvae overwinter in burrows near the stream or pond margin.
Season
Usually seen in spring (April-June) and again in late summer/early fall (August-October). In North Carolina, recorded April-May (June in mountains), August-October (2).
Food
A variety of insects.
Life Cycle
Two year life cycle, with third instar larvae passing through the first winter, and adults the second winter.
Remarks
Hybridizes with C. oregona in a small area of the Rocky Mountains in midwestern US.
See Also
In the Common Shore Tiger Beetle (C. repanda), the humeral lunule touches, or nearly touches, the anterior projection of the middle band (see image by Patrick Coin).
Oregon Tiger Beetle (C. oregona) is very similar but does not occur east of the Rocky Mountains.
Print References
Acorn, pp. 45-46(1)
Brimley, p. 114 (2)
Choate, plates 61, 62 lists, but there are no records for Florida (3).
Allen, p. 13 (4)
Pearson, pp. 66-67, plate 4 (5)
Internet References
Tiger Beetles of Connecticut live adult image plus description, distribution, similar species (U. of Connecticut)
pinned adult image plus description, habitat, seasonality, biology, distribution (Strickland Entomological Museum, U. of Alberta)
Works Cited
1.Tiger Beetles of Alberta: Killers on the Clay, Stalkers on the Sand
John Acorn. 2001. University of Alberta Press.
2.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
3.Tiger Beetles: A Field Guide and Identification Manual for Florida and Eastern U.S.
Paul Merrill Choate. 2003. University Press of Florida.
4.Tiger Beetles of West Virginia
Thomas J. Allen and Robert E. Acciavatti. 2002. West Virginia Department of Natural Resources.
5.A Field Guide To The Tiger Beetles Of The United States And Canada
David Pearson, C. Barry Knisley, Charles J. Kazilek, David L. Pearson, Barry C. Knisley. 2005. Oxford University Press.