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Species Acantholyda erythrocephala - Pine False Webworm

Pine sawfly, 10:24am - Acantholyda erythrocephala - female sawfly..Pine false webworm??? - Acantholyda erythrocephala - female Pine False Webworm - Acantholyda erythrocephala - female Pine False Webworm - Acantholyda erythrocephala - female Insect - Acantholyda erythrocephala red faced bug - Acantholyda erythrocephala Yellow-faced webspinning sawfly - Acantholyda erythrocephala - male Acantholyda erythrocephala - female
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 Pamphiliidae (Webspinning and Leafrolling Sawflies)
Subfamily Cephalciinae
Genus Acantholyda
Species erythrocephala (Pine False Webworm)
Other Common Names
Pine Web-spinning Sawfly
NB: this is not the only species in the genus to use pine as a host.
Explanation of Names
Acantholyda erythrocephala (Linnaeus 1758)
Size
8-15 mm(1)
Range
native to Europe, adventive in NA and now widespread in the north(1)
Season
Pupation occurs in early spring, adults emerge in April and May(2)
Food
Pines, including Pinus strobus, P. sylvestris, P. resinosa, etc.
Life Cycle
Overwinter as larva(2)
Eggs are laid in short rows of 3-10 each on previous year's needles. The larvae spin loose webbing about themselves and feed gregariously on the old needles. Older larvae feed singly. Full-grown larvae drop to the ground and enter the soil for hiberation.(2)
One generation per year(2)
Remarks
Since being introduced in 1925, it has become a pest
Internet References
Fact sheet (Allen 1998; archived)
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.