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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Laphria grossa

bumble wasp - Laphria grossa - male bee killer? - Laphria grossa - male Laphria grossa - Robber Fly - Jackson County, MO - Laphria grossa - male Laphria grossa - male Forrest hunter  - Laphria grossa - male Bee mimic robber fly?  - Laphria grossa Laphria grossa Robberfly79 - Laphria grossa
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 Laphriinae
Genus Laphria (Bee-like Robber Flies)
Species grossa (Laphria grossa)
Explanation of Names
Laphria grossa (Fabricius 1775)
23-35 mm(1)
a mimic of a Bombus (Psithyrus); suggested models: B. citrinus, B. vagans, B. impatiens, depending on the amount of yellow on the abdomen; in the southern portions of the range, specimens have more yellow on the abdomen and resemble B. pensylvanicus.(2)(1)
e. US (ME-FL to KS-MS) & QC(3)
deciduous forests; adults often near large stumps(1)
in NC: (May), Jun-Jul(4)
Internet References