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Family Cephidae - Stem Sawflies

Sawfly? - Cephus cinctus Stem Sawfly 2 - Calameuta clavata - male sawfly - Cephus cinctus Ichneumon Wasp? - female Cephid on buttercup black and yellow wasp Hartigia?  - Hartigia Blue Wasp with White Spot - Hartigia trimaculata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Symphyta" - Sawflies, Horntails, and Wood Wasps)
Family Cephidae (Stem Sawflies)
Numbers
16 spp. in 6 genera north of Mexico(1)
Identification
Slender, laterally compressed. Elongated pronotum. Mostly black, some with light colored markings. Clubbed antennae.
keys to NA genera and CA spp. in(2)
Range
Across the continent(1)
Food
On grasses (incl. grain crops) and shrubs (incl. berries, roses, willows)(1)
Life Cycle
The larvae bore in the stems(1)
Remarks
Some are serious pests, for instance the wheat stem sawfly
Internet References
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.The Cephid Stem Borers of California (Hymenoptera: Cephidae)
Woodrow W. Middlekauff. 1969. Bulletin of the California Insect Survey, Volume 11, University of California Press.