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Genus Pemphredon - Aphid wasp

Bee - Pemphredon small black wasp - Pemphredon Very small wasp on lemon tree - Pemphredon Aphid Wasp? - Pemphredon Aphid Wasp - Pemphredon Small Black Apoid Wasp - Pemphredon aphid wasp - Pemphredon - female yellow-orange larva? - Pemphredon
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; hind tibia with a series of spines posteriorly. (Terminology)
Larvae feed on aphids
Life Cycle
Usually 2 generations a year, the second generation overwinters as prepupa. Regardless of season, pupal stage lasts ~3 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