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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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

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Family Adelgidae

Young Hemlock Woolly Adelgids - Adelges tsugae Spruce Gall Adelgid - Adelges abietis adult female adelgid - Adelges abietis - female adult female adelgid - Adelges abietis - female spruce galls - Adelges abietis Aphid on witch hazel HWA - Adelges tsugae Eggs? - Pineus strobi
Classification
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
Numbers
Two genera and 22 species in the U.S. and Canada.
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.

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
Food
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.
Remarks
Some of the most destructive introduced pests belong to this group.
Internet References
Annual Review of Entomology. Biology and Evolution of Adelgidae.