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

Calendar
Upcoming Events

Information, 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


TaxonomyBrowse
Info
ImagesLinksBooksData

Species Pemphigus populicaulis

Poplar Petiole Gall - Pemphigus populicaulis Inside a Poplar Petiole Gall - Pemphigus populicaulis Inside a Poplar Petiole Gall - Pemphigus populicaulis Pemphigus populicaulis & cottonwood gall - Pemphigus populicaulis Pemphigus gall? - Pemphigus populicaulis Pemphigus populicaulis? - Pemphigus populicaulis Pemphigus populicaulis? - Pemphigus populicaulis Pemphigus populicaulis? - Pemphigus populicaulis
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 Aphidoidea
Family Aphididae (Aphids)
Subfamily Eriosomatinae (Woolly Aphids and Gall-making Aphids)
Tribe Pemphigini
Genus Pemphigus
Species populicaulis (Pemphigus populicaulis)
Synonyms and other taxonomic changes
First described in 1859 by Asa Fitch under the name Pemphigus populicaulis
Explanation of Names
populicaulis is from Latin populus, the scientific name for the poplar tree + caulis- "stalk or stem", probably both in the genitive case- thus meaning "of poplar stalks or stems". Fitch gave this species the common name "Poplar-stem Gall-louse", based on the obsolete name of "Plant Lice" for aphids.
Remarks
Causes twisted, subglobular galls with oblique openings at the base of cottonwood (Populus) leaf blades. (1)
Internet References
Works Cited
1.Plant Galls and Gall Makers
Ephraim Porter Felt. 1940. Comstock Publishing Company, Inc., Ithaca NY.