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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Symphyta" - Sawflies, Horntails, and Wood Wasps » Argid Sawflies (Argidae) » Arge » pectoralis group (Arge pectoralis group)

pectoralis group

Sawfly - Arge pectoralis Orange buttonbush bug - Arge pectoralis Sawfly larva - Arge quidia Unknown Sawfly - Arge pectoralis - female Unknown Sawfly - Arge pectoralis - female Chokecherry Sawfly - Arge pectoralis Chokecherry Sawfly - Arge pectoralis Arge pectoralis
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)
Genus Arge
No Taxon pectoralis group
Numbers
6 spp. in our area, a dozen total(1); not yet in the guide: A. rumica (w. NV & so. CA), A. salicis (e. US: NJ-SC to IL-KY), A. tumsua (e. NA: QC-RI to ON-MI-OH)
Size
Larvae are 18mm long(2)
Range
holarctic; in our area, mostly eastern; A. pectoralis is transcontinental in the north, A. rumica is our only western sp. (w. NV & so. CA)(1)
Season
Adults appear in June and July; Larvae are present July to Sept(2)
Food
Willow(2)
Life Cycle
Eggs are deposited in slits cut in the margins of leaves.(2)
Overwinter as full-grown larvae in cocoons spun in the litter on the ground.(2)
Works Cited
1.The sawfly genus Arge (Hymenoptera: Argidae) in the Western Hemisphere
Smith D.R. 1989. Trans. Am. Ent. Soc. 115: 83‒205.
2.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
Contributed by v belov on 17 August, 2012 - 4:13pm
Additional contributions by Marci Hess
Last updated 4 September, 2023 - 10:15am

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