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Apoid Wasps (Apoidea)- traditional Sphecidae

Katydid Wasp - Sphex nudus Crabronina - ? - Ectemnius spider wasp? - Chalybion californicum Ectemnius sp? Male, Sphecidae - Chalybion zimmermanni - male Very large wasp on clethra - Sphecius speciosus - female Philanthus species - Philanthus Crabronid wasp - Philanthus - male
Classification
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
Numbers
~1360 spp. in 112 genera of 3 families in our area(1), >9700 spp. in 4 families (Heterogynaidae is a small Old World group) worldwide(2)
Identification
key to genera in(3)
OVERVIEW OF FAMILIES


Remarks
Communal roosting behavior of males is very common among a number of species of Apoid wasps, as well as other groups.
Internet References