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Genus Pemphredon - Aphid wasp

Pemphredonini - Pemphredon - female wasp - Pemphredon Aphid Wasp - Pemphredon Sphecidae - Pemphredon Square-headed Wasp - Pemphredon Aphid Wasp - Pemphredon Wasp?   - Pemphredon Pemphredoninae - Pemphredon - female
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 Crabronidae
Subfamily Pemphredoninae (Aphid Wasps)
Tribe Pemphredonini
Subtribe Pemphredonina
Genus Pemphredon (Aphid wasp)
20 spp. in 2 subgenera in our area(1), 44 spp. total(2)
Forewing with two recurrent veins and three discoidal cells; stigma small or moderate in size.
Episternal sulcus incomplete, not evident between subalar fossa and hypersternaulus; hypersternaulus rising obliquely posterad; hinditibia with a series of spines posteriorly.
Larvae feed on aphids
Life Cycle
Usually there are two generations a year. The second generation overwinters as prepupa.
Regardless of season, pupal stage lasts about three weeks.
Females nest in hollow twigs of roses, cranberries, etc. They stock the nest with paralyzed aphids and build walls made of chewed pith between cells.
Internet References