Caryomyia spherica
Gagne Description 2
Infrequent, on Eucarya hickories; usually scattered along veins, on lower leaf surface; 5.0-8.0 mm in diameter, spherical, covered with thick, short, brown hair obscuring gall surface; base with narrow, shallow, circular depression; larval chamber at center of sphere, ovoid, tan to brown, the surrounding thick walls large-celled, woody. Galls of this species are superficially similar to the rounder galls of C. persicoides, but the larval chamber of C. spherica is centrally located instead of at the base of the gall. The gall is also much harder and not subject to shrinkage as is the softer gall of C. persicoides.
Gagne Biology Note 2
In autumn the full-grown larva cuts a cylindrical passage from its chamber in the center of the gall up to but not including the epidermis. In spring the pupa pushes through the epidermis. Adults were reared in early April. In my experience this gall appears in late summer.
Sources and Credits
- (c) Adam Kranz, all rights reserved, uploaded by Adam Kranz
- (c) Adam Kranz, some rights reserved (CC BY-SA)
More Info
- iNat taxon page
- Animal Diversity Web
- Biodiversity Heritage Library
- BOLD Systems BIN search
- BugGuide
- CUIC Insect Images
- Field/Photo ID for Flies
- Global Biodiversity Information Facility (GBIF)
- Guide to Hickory Midge Galls
- Guide to Hickory Midge Galls
- Maryland Biodiversity Project
- NatureServe Explorer 2.0
- Systema Dipterorum
iNat Map
| Carya | floridana, glabra, laciniosa, myristiciformis, ovata, pallida, texana, tomentosa |
|---|---|
| Texture | hairy |
| Alignment | erect |
| Detachable | yes |
| Location | leaf midrib, leaf veins (including midrib), lower leaf |
| Walls | thick |
