Pachypsylla
Pachypsylla is a genus of psyllids.[1] Each of its four species lay eggs on the leaves of the Celtis occidentalis tree. Upon hatching, the young psyllids become encased in a "gall" which the young leaf parts grow in response to the infestation.[2]
| Pachypsylla | |
|---|---|
 | |
| Hackberry nipplegall maker 1 | |
 | |
| Hackberry nipplegall maker 2 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Sternorrhyncha |
| Family: | Aphalaridae |
| Subfamily: | Pachypsyllinae |
| Genus: | Pachypsylla Riley, 1885 |
Species
Species of Pachypsylla include:
- Pachypsylla celtidisgemma – hackberry bud gall maker
- Pachypsylla celtidismamma – hackberry nipplegall maker
- Pachypsylla celtidisvesiculum – hackberry blistergall psyllid
- Pachypsylla venusta – petiolegall psyllid
Gallery
Pachypsylla celtidisumbilicus, nymph
Galls of Pachypsylla celtidisumbilicus
Galls of Pachypsylla celtidismamma on hackberry
References
- "zipcodezoo.com page on Pacypsylla". BayScience Foundation, Inc.
- "Hackberry Gall Psyllids". University of Nebraska-Lincoln Extension in Lancaster County.
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