Hackberry Petiole Gall Psyllid
Pachypsylla venusta
This record describes Pachypsylla venusta (species). Recorded family: Carsidaridae. Recorded order: Hemiptera.
Identification and Appearance

A large and robust species, much larger than other Pachypsylla ; forewings rhomboidal, hyaline with dark maculae. Galls are large (1-1.5cm) and spherical, forming on the leaf petioles
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
- Suborder
- Sternorrhyncha
- Superfamily
- Psylloidea
- Family
- Carsidaridae
- Subfamily
- Pachypsyllinae
- Genus
- Pachypsylla (Hackberry Psyllids)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
CT-FL to ID-AZ
Diet and Behavior
Diet: Hackberry (Ulmaceae: Celtis spp.) including C. occidentalis , C. reticulata , C. tenuifolia , & C. laevigata ( 3 )
Additional species information
Species notes from the sources
Etymology: Pachypsylla venusta (Osten-Sacken, 1861)
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Pachypsylla venusta. Species-specific details appear above.
Group overview
Hemiptera (true bugs) includes over 80,000 described species across cicadas, aphids, leafhoppers, shield bugs, and bed bugs. Aphids alone cost global agriculture an estimated $2.5 billion annually in crop losses.
Ecological role of the group
Many Hemiptera are essential food sources for birds and predatory insects. Cicadas provide massive nutrient pulses during emergence events - a single Brood X emergence can involve trillions of individuals across 15 states.
Economic and practical significance of the group
The brown marmorated stink bug (Halyomorpha halys) caused $37 million in apple crop losses in a single year in the U.S. Mid-Atlantic region. Bed bug infestations in the U.S. increased by 500% between 2001-2010, costing the hotel industry hundreds of millions annually.
Recorded sources for this group: USDA, EPA, University research. Imported estimates may describe particular regions or reporting periods.
Photos of Hackberry Petiole Gall Psyllid (3)
Photo credits: Contributed by Charley Eiseman; Additional contributions by v belov , Chris Mallory
Frequently Asked Questions About Hackberry Petiole Gall Psyllid
What is Hackberry Petiole Gall Psyllid?
Hackberry Petiole Gall Psyllid (Pachypsylla venusta) is a species in the family Carsidaridae, within the order Hemiptera.
How big is Hackberry Petiole Gall Psyllid?
5-6mm
How do you identify Hackberry Petiole Gall Psyllid?
A large and robust species, much larger than other Pachypsylla ; forewings rhomboidal, hyaline with dark maculae. Galls are large (1-1.5cm) and spherical, forming on the leaf petioles
Where is Hackberry Petiole Gall Psyllid found?
Range: CT-FL to ID-AZ
What does Hackberry Petiole Gall Psyllid eat?
The diet of the Hackberry Petiole Gall Psyllid includes Hackberry (Ulmaceae: Celtis spp.) including C. occidentalis , C. reticulata , C. tenuifolia , & C. laevigata ( 3 ).
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