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Species Pachypsylla celtidisgemma - Hackberry Bud Gall Psyllid

Pachypsylla celtidisgemma - female Pachypsylla celtidisgemma - female tiny true bug - Pachypsylla celtidisgemma Unknown Psylloidea - Pachypsylla celtidisgemma Unknown Psylloidea - Pachypsylla celtidisgemma Psylloidea? - Pachypsylla celtidisgemma Psylloidea? - Pachypsylla celtidisgemma Psylloidea? - Pachypsylla celtidisgemma
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
Genus Pachypsylla (Hackberry Psyllids)
Species celtidisgemma (Hackberry Bud Gall Psyllid)
Other Common Names
Glabrous Bud Gall Psyllid (1)
Explanation of Names
Pachypsylla celtidisgemma Riley, 1885
3-3.5mm (2)
"Among the common, eastern species this can be identified by its lack of dorsal pubescence, generally lighter color and nearly uniformly brownish wings (though I have seen an individual in which the wing coloration was slightly patchy). It is most like P. celtidisinterneris, though that species typically (though not always) is a little larger, has a dark spot on the pterostigma, darker maculations on the head and thorax and a relatively consistent coloration pattern on the wings. The shape of the wing venation is quite different as well if they are put side by side in that the two marginal cells are quite a bit wider at the wing margin in P. celtidisinterneris than in P. celtidisgemma." --Zack Falin
Central and eastern US (1)
Hackberry (Ulmaceae: Celtis spp.) including C. occidentalis, C. tenuifolia, & C. laevigata (1)
Life Cycle
The adults appear in spring, after having overwintered as nymphs in galls. The polythalamous galls are formed on axillary buds of twigs (2).
Internet References
Photo of galls - Whitney Cranshaw, Colorado State University
Works Cited
1.Biosystematics of hackberry psyllids (Pachypsylla) and the evolution of gall and lerp formation in psyllids
Yang, M.-M. & C. Mitter. 1993. The Ecology and Evolution of Gall-forming Insects. United States Dept. of Agriculture.
2.The psyllids of America North of Mexico: (Psyllidae: Homoptera) (Subfamilies Psyllinae and Triozinae)
Tuthill, L.D. . 1943. Iowa State College Journal of Science 17: 443-660.