Caryomyia guttata Gagne, new species

Hosts: Carya floridana

Gall (Figs. 154-155): Found commonly but only on the central Florida endemic, scrub hickory, of the Eucarya section; on lower leaf surface on vein, occasionally on leaf rachis, usually clustered in a row along major vein and often coalescing in series; 3-6 mm in height, spheroid basally, usually teardrop shaped, the apex tapering to a point; surface rugose, covered with tiny, red-brown and /or gold, resinous dots (as is the tree) and sparse setae; base with circular to irregular, shallow, central excavation; wall woody, thick, larval chamber basal, irregularly ovoid, glabrous, green to brown, a bundle of fibers present between apex of larval chamber and gall apex. This is the only hickory gall with such a local distribution and the only one known to occur sometimes on the leaf rachis. Galls resemble most those of C. aggregata and C. holotricha in shape but lack a dense covering of long hair and have no intrusion of hairs into the larval chamber. As are galls of C. aggregata, galls of C. guttata are found in close series along leaf veins.

Range: FL

- Raymond J. Gagne: (2008) The Gall Midges (Diptera: Cecidomyiidae) of Hickories (Juglandaceae: Carya)^©

Reference: https://www.biodiversitylibrary.org/page/38636615#page/49/mode/1up