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

Forewings hyaline with dark maculae along pterostigma, continuing around the apex to the tip of the clavus and from there extending along the cubital vein; marginal cells relatively short, branches of medial cell sinuate
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
Central US from OH to KS
Diet and Behavior
Diet: Hackberry (Ulmaceae: Celtis spp.) including C. occidentalis , C. reticulata , C. tenuifolia , & C. laevigata ( 3 )
Life History
Galls are located under the bark on twigs or bases of the larger limbs; adults emerge in spring
Additional species information
Species notes from the sources
Etymology: Pachypsylla celtidisinteneris Mally, 1894
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Pachypsylla celtidisinteneris. 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 Twig Gall Psyllid (5)
Photo credits: Contributed by v belov; Additional contributions by Chris Mallory
Frequently Asked Questions About Hackberry Twig Gall Psyllid
What is Hackberry Twig Gall Psyllid?
Hackberry Twig Gall Psyllid (Pachypsylla celtidisinteneris) is a species in the family Carsidaridae, within the order Hemiptera.
How big is Hackberry Twig Gall Psyllid?
3.5-4mm
How do you identify Hackberry Twig Gall Psyllid?
Forewings hyaline with dark maculae along pterostigma, continuing around the apex to the tip of the clavus and from there extending along the cubital vein; marginal cells relatively short, branches of medial cell sinuate
Where is Hackberry Twig Gall Psyllid found?
Range: Central US from OH to KS
What does Hackberry Twig Gall Psyllid eat?
The diet of the Hackberry Twig Gall Psyllid includes Hackberry (Ulmaceae: Celtis spp.) including C. occidentalis , C. reticulata , C. tenuifolia , & C. laevigata ( 3 ).
What is the life cycle of a Hackberry Twig Gall Psyllid?
Galls are located under the bark on twigs or bases of the larger limbs; adults emerge in spring
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