Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Spring 2021 gathering in Louisiana, April 28-May 2. Here's how to add your images.

National Moth Week 2020 photos of insects and people.

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


Subfamily Pachypsyllinae

Hackberry Psyllid - Pachypsylla celtidismamma tiny true bug - Pachypsylla celtidisgemma Gall - Pachypsylla Sugarberry Psyllid nymph? - Tetragonocephala flava Hackberry Psyllid, ventral-lateral - Pachypsylla Female, Aphalara? - Pachypsylla pallida Male, Sugarberry Psyllid? - Tetragonocephala flava - male Pachypsylla
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 Psylloidea
Family Aphalaridae
Subfamily Pachypsyllinae
Explanation of Names
Pachypsyllinae Crawford, 1914
Over 9 spp. in 2 genera in our area(1), over 20 spp. in 3 genera worldwide(2)
2-6mm (3)
Pachypsylla: Basal segment of metatarsus with two black claws, forming galls on Hackberry (3)

Tetragonocephala flava: Basal segment of metatarsus without claws, on Sugarberry (3)
Throughout North America, especially in the east (2)