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

Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Family Adelgidae

winged bug Cooley's Spruce Galls - Adelges cooleyi aphid? Fuzz Sternorrhyncha 7-24-10 02a - Adelges abietis Life cycle - Adelges abietis - female Non-native pest of hemlocks - Adelges tsugae Hemlock wooly adelgid - Adelges tsugae
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Phylloxeroidea
Family Adelgidae
Two genera and 22 species in the U.S. and Canada.
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.

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)
Eleven species, the following of which are pests:
P. strobi (Hartig) Pine Bark Adelgid
P. pinifoliae (Fitch) Pine Leaf Adelgid
… Cheryl Moorehead, 17 October, 2006
This small group is confined to conifers, feeding on needles, twigs, or on the galls they form.
Life Cycle
Multigenerational life cycles. Most species alternate their coniferous hosts.
Some of the most destructive introduced pests belong to this group.
Internet References
Annual Review of Entomology. Biology and Evolution of Adelgidae.