Identification
From "American Insects" by Ross H. Arnett, Jr.
pg. 314: 20. Adelgidae (Pine and Spruce Adelgid Family)[=Chermidae]
L. 2-3 mm. Front wing with reduced venation: antennae three-segmented in wingless females, four-segmented in sexual forms, and five-segmented in winged females; abdomen without cornicles. Wingless females and nymphs covered with waxy flocculence. This small group is confined to conifers, feeding on needles, twigs, or on the galls they form. Most species alternate their coniferous hosts, but the primary host is always a spruce. There are two genera and 22 species in the U.S. and Canada.
Adelges (Vallot)
Eleven species, the following of which are pests:
A. cooleyi (Gillette) Cooley Spruce Gall Adelgid
A. abietis (Linnaeus) Eastern Spruce Gall Adelgid
A. picea (Ratzeburg) Balsam Woolly Adelgid
A. tsugae (Annan) Hemlock Woolly Adelgid
Pineus (Shimer)
P. strobi (Hartig) Pine Bark Adelgid
P. pinifoliae (Fitch) Pine Leaf Adelgid
… Cheryl Moorehead, 17 October, 2006
