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Species Philanthus gibbosus

Philanthus gibbosus? - Philanthus gibbosus - male small wasp - Vespidae? - Philanthus gibbosus   - Philanthus gibbosus Philanthus gibbosus? - Philanthus gibbosus wasp or sawfly? - Philanthus gibbosus - male wasp or sawfly? - Philanthus gibbosus - male Male Philanthus Gibbosus - Philanthus gibbosus - male Philanthus? - Philanthus gibbosus
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 (Apoidea sans Anthophila – Apoid Wasps)
Family Crabronidae (Square-headed Wasps, Sand Wasps, and Allies)
Subfamily Philanthinae
Tribe Philanthini
Genus Philanthus (Beewolves)
Species gibbosus (Philanthus gibbosus)
Explanation of Names
Philanthus gibbosus (Fabricius 1775)
gibbosus 'humped'
8-10 mm
coast to coast in NA(1)
Forest edges, meadows, yards
All season in the south; late Jun to mid-Sep in Canada
larvae feed on bees (Sphecodes, Colletes etc.) and Crossocerus spp. Adults feed on nectar.
Life Cycle
Females with prey:

Colonies are small, but not close together, using any soil type, flat or steep earthen banks. Tunnels with ~7 cells to the side of the main tunnel. Each provsioned cell contains 8-16 bees, usually halictids. Occasionally 2 females will use the same tunnel opening, but each uses its own cells. Males dig small tunnels and close them, to sleep in during the night, usually in aggregations. Females keep nest closed and sleep in the tunnel at night.
Each female raises its own brood. However several wasps have been seen sharing one burrow's entrance
See Also
Cerceris has some similar species.
Print References
Animal Behavior. Burrow sharing and nest transfer in the digger wasp Philanthus gibbosus (Fabricius)
Cal. Academy. The Life History and Habits of the solitary Wasp Philanthus gibbosus
Internet References