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Genus Ceraturgus

Robber - Ceraturgus fasciatus Robber Fly - Ceraturgus - female Ceraturgus fasciatus? - Ceraturgus fasciatus possible robber fly - Ceraturgus elizabethae Robber Fly - Ceraturgus fasciatus Ceraturgus fasciatus Robber Fly - Ceraturgus aurulentus Id help needed - robber fly - Ceraturgus cruciatus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Asilidae (Robber Flies)
Subfamily Stenopogoninae
Genus Ceraturgus
Synonyms and other taxonomic changes
Ceraturgus Wiedemann, 1824
Explanation of Names
Greek ceras 'horn' + Latin turgus 'swollen'
Numbers
10 spp. in our area, 14 total(1)
Size
10-20 mm
Identification
This genus is characterized by the very elongate antennal segments which add to the wasp mimicry. Several have banding on the abdomen as well and some are dark-winged. The other more widespread species from cruciatus has bright yellow legs.
key to spp. in(2)
detailed descriptions of several species in(3)
Range
Eastern North America. Ranges are somewhat uncertain due to the rarity of specimens. Summary of ranges based on Herschel Raney's Ceraturgus page:
C. aurulentus (Fabricius): Massachusetts south to South Carollina, west to Michigan
C. cornutus (Wiedemann): Georgia south to Florida, west to Alabama, Arkansas
C. cruciatus (Say): Midwest--Minnesota, Illinois, south to Oklahoma
C. fasciatus Walker: Northeast--Maine to South Carolina, west to Michigan, Missouri
C. elizabethae Brimley: Southeast--Pennsylvania south to Georgia, west to Indiana, Texas
C. johnsoni Martin: Florida
C. mitchelli Brimley: Pennsylvania, west to Michgan, south to Nebraska, Texas, Louisiana, North Carolina
C. nigripes Williston: Georgia, Carolinas, Tennessee
C. oklahomensis (Bromley): Oklahoma, Texas
C. similis Johnson: Vermont south to West Virginia
Habitat
C. cruciatus often found in open areas and field habitat; C. elizabethae seems to prefer small openings in wooded areas. Many of the other preferences are unknown.
Season
May-Jul in NC(4)
Food
Reported to take various small insects, such as beetles and Hemiptera(2)
Life Cycle
Mostly unknown other than the general robber fly info. Reported to oviposit in soil(2)
Remarks
Virtually any observation of behavior, habitat of food preference in this genera is likely of scientific interest. Locations for species other than cruciatus should be reported.
See Also
Prolepsis tristis, also a strong wasp mimic--the antennae eliminate most other robberfly groups
Internet References