Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


TaxonomyBrowse
Info
ImagesLinksBooksData

Family Argidae - Argid Sawflies

Sawfly - Arge humeralis BG2393 E0323 - Arge another oak sawfly - Arge quidia Flower sawfly - Arge fly, wasp, bee?? - Arge Schizocerella ? - Schizocerella lineata - female Sawfly larva - Arge quidia Arge humeralis - Poison Ivy Sawfly - Arge humeralis
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 Argidae (Argid Sawflies)
Synonyms and other taxonomic changes
revised in(1)
Numbers
~60 spp. in 12 genera in our area(2)
Size
8-15 mm(2)
Identification
Stout bodied, easily recognized by their characteristic antennae: three-segmented, the third segment very long; males of some species have the last antennal segment U-shaped or Y-shaped. Most argids are black or dark colored.
NA argid larvae may be separated from other sawfly larvae by the following combination of characters: (1) Presence of a divergent lobe next to the tarsal claw of each thoracic leg (lobe reduced in Atomacera); (2) one-segmented antenna which may be flat, rounded, or peglike; (3) abdominal segments 1 to 9 each with 3, sometimes 2, annulets; (4) presence of a tarsal claw on each thoracic leg, or only prothoracic leg lacking a tarsal claw.(3)
Key to genera in(1)
Range
Worldwide, most diverse in the tropics.
Food
The larvae feed mainly on foliage of various kinds of ferns, horsetails, gymnosperms and angiosperms, occasionally they feed on the pith of twigs or on catkins.
Print References
descriptions & host associations of several common eastern species(4)
Internet References
Works Cited
1.Key to genera of Nearctic Argidae (Hymenoptera) with revisions of the genera Atomacera Say and Sterictiphora Billberg
Smith D.R. 1969. Trans. Am. Ent. Soc. 95: 439-457.
2.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
3.North American sawfly larvae of the family Argidae (Hymenoptera)
Smith D.R. 1972. Trans. Am. Ent. Soc. 98: 163-184.
4.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
5.van Noort S. (2004-2014) Wasps of Africa and Madagascar