Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Sphex nudus

Digger Wasp ID? - Sphex nudus Katydid Wasp? - Sphex nudus Sphex sp, possibly nudus - Sphex nudus Wasp - Sphex nudus Wasp - Sphex nudus - male - female Wasp - Sphex nudus - male black fly/wasp on mountain mint - Sphex nudus - male Wasp at Dyke Marsh - Sphex nudus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Apoid Wasps (Apoidea)- traditional Sphecidae)
Family Sphecidae (Thread-waisted Wasps)
Subfamily Sphecinae
Tribe Sphecini
Genus Sphex
Species nudus (Sphex nudus)
Other Common Names
Katydid Wasp (note: may cause confusion as this name can refer to various members of this genus and beyond). Possibilities for more appropriate, species-specific common names may include "Nude Katydid Wasp", "Unadorned Katydid Wasp", or "Unadorned Digger Wasp".
Explanation of Names
Author of species is Fernald, 1903.
Size
circa 20-25 mm
Identification
A dark Sphex with silvery pubescence on thorax and distinctive tan legs.
Range
Southeastern United States. California Academy of Sciences (Internet references) lists records from Texas, Tennessee, Illinois, Maryland, North Carolina. See also BugGuide records under the Data tab--records from as far north as IL and NY.
Season
July-August (North Carolina)
Food
Visits flowers
Life Cycle
Provisions nest with katydids and gryllacridids.

One of the wasp's chief hosts is Camptonotus carolinensis.
See Also
Sphex flavovestitus also has tan legs. Note the pattern on thorax and the golden pubescence.


Podium luctuosum is similar in coloration, but note the much longer petiole ("wasp waist"). It also has more orange final tarsi ("feet") and darker setae.
Print References
Brimley, p. 444, lists as Chlorion nudum from coastal plain and mountains of North Carolina (1).
Internet References
North Carolina State University Entomology Collection lists for that state, with 22 pinned.
Works Cited
1.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.