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Genus Graphisurus

Impressive Cerambycid, I'm thinking Urographus - Graphisurus fasciatus - female black-marked longhorn - Graphisurus despectus - female Longhorn With beetle - Graphisurus fasciatus - female Cerambycidae - Graphisurus fasciatus - female cerambycid 1 - Graphisurus despectus Beetle - Graphisurus fasciatus Long-Horned Beetle - Graphisurus fasciatus - female
Classification
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 (Longhorn and Leaf Beetles)
Family Cerambycidae (Longhorn Beetles)
Subfamily Lamiinae (Flat-faced Longhorn Beetles)
Tribe Acanthocinini
Genus Graphisurus
Synonyms and other taxonomic changes
Urographis Horn 1880
Explanation of Names
Graphisurus Kirby 1837
Numbers
3 spp. in our area, 5 total(1)
Identification
Two of the three species in our fauna are very similar and difficult to determine accurately. Here are some notes on how to separate Graphisurus fasciatus from Graphisurus despectus. The third species, Graphisurus triangulifer is quite distinct from these other two.

Graphisurus fasciatus, female Graphisurus despectus, female
Graphisurus fasciatus, male Graphisurus despectus, male

Several characters in combination will separate Graphisurus fasciatus from Graphisurus despectus:

In fasciatus, the apices of the elytra are emarginate, in despectus they are truncate
In fasciatus the scutellum has a gray pubescent mark medially, while in despectus it is all-dark
The antennal scape of fasciatus has a gray pubescent band at the middle third, while in despectus the basal two-thirds of the scape is gray
In fasciatus the dark mottling of the elytra is more pronounced and in despectus the background coloration is a more even gray
The dorsal surface of the female ovipositor of fasciatus has a distinct carina, or is at least noticeably convex, while in despectus the dorsal surface of the ovipositor is flat and unridged.
Range
e. NA (west to MN-TX) to Panama(1)(2)
Works Cited
1.New World Cerambycidae Catalog
2.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.