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Species Dryobius sexnotatus - Six-banded Longhorn Beetle

Six Banded Longhorn - Dryobius sexnotatus Long-horned Beetle? - Dryobius sexnotatus Dryobius sexnotatus Dryobius sexnotatus Dryobius sexnotatus Longhorn Beetle? - Dryobius sexnotatus Six-banded Longhorn Beetle - Dryobius sexnotatus Dryobius - Dryobius sexnotatus - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Cerambycinae
Tribe Dryobiini
Genus Dryobius
Species sexnotatus (Six-banded Longhorn Beetle)
Other Common Names
Maple Dryobius (1)
Synonyms and other taxonomic changes
Dryobius sexnotatus Linsley 1957
Syn: sexfasciatum Say 1824 (not Olivier 1792)
monotypic genus (2)
18-25 mm (3)
pattern distinctive:

(recently collected in e. TX; state record)
e US (TX-GA-PA-KS) - Map (1)(Skillman 1993)(4); >80% of specimens examined by Perry et al. (1974) were from the Ohio River Valley
Old growth hardwood forests; mostly in large, very old deteriorating sugar maple trees that have been wounded/scarred; adults hide under bark (1). In PA, all of the sugar maples observed were very old and at least 3 ft across. Most sites are located in stream valleys. (Perry et al. 1974)
Flies early March to early September (most records Jun 15 to Jul 15) (Perry et al. 1974)
Primary host: sugar maple (Acer saccharum) (5) (larvae bore in living and dead trees); also basswood, beech, linden and rarely elm (1)
Can maintain itself on other hosts for a short period, but survival seems to depend on the availability of large, very old (overmature) sugar maple trees (Perry et al. 1974)
Uncommon/rare (3)(5); widely scattered, populations are sparse (1); listed as rare or threatened by several states, e.g. considered a SGCN by AR, LA, and VA (6)(7)(8)
Dury (1902) noted that D. sexnotatus was once abundant but was even then becoming rare.
Perry et al. (1974) noted a sharp decline in the collection since 1942.
Print References
Dury, C. (1902) A revised list of the Coleoptera observed near Cincinnati, Ohio, with notes on localities, bibliographical references and description of six new species. Jour. Cincinnati Soc. Nat. Hist. 20(3): 107-196.
Linsley, E.G. (1957) Some new genera and species of North American Cerambycidae. Can. Entomol., 89(6): 283-287.
Perry, R.H., R.W. Surdick and D.M. Anderson (1974) Observations on the biology, ecology, behavior, and larvae of Dryobius sexnotatus Linsley (Coleoptera: Cerambycidae). The Coleopterists Bulletin 28(4): 169–176. (JSTOR)
Skillman, F.W., Jr. (1993) New records of Georgia Cerambycidae (Coleoptera: Cerambycidae). Insecta Mundi 7(4): 210. (Full PDF)
Warriner, M.D. (2002) Rare insect fact sheet for Dryobius sexnonatus (Six banded longhorned beetle). Arkansas Natural Heritage Commission, Little Rock. 1 pp. (Full text)
Internet References
Species Profile - US Fish & Wildlife Service