Caryomyia recurvata Gagne, new species

Hosts: Carya texana, ovata, tomentosa, glabra, pallida

Gall (Figs. 9, 90-91): Occasional, found on Eucarya hickories; usually in groups, on lower leaf surface on vein; 2.5-4.0 mm in length, recumbent, truncate near base, abruptly narrowed and recurved beyond basal third; white, green, to tan, hairless, glaucous; base of gall with central, conical pedicel surrounded by shallow, circular indentation; wall firm, brittle, uniformly thin except for slightly thicker blunt end, larval chamber glabrous, with longitudinal ridges following gall axis from leaf vein connection to recurved apex. This gall is most similar to that of C. eumaris but is hairless and has a smooth glaucous surface and has a more truncate base. The gall of C. eumaris has a rough and sparsely hairy surface.

Affinities. — See under C. eumaris. [C eumaris: Galls of several other species, C. procumbens, C. recurvata, C. spinulosa, and C. supina, have similar attachments to leaf veins, grow horizontally, are thin-walled but brittle, and have longitudinally ridged larval chambers. Larvae of all are generally similar with narrow but two- toothed spatulas and only four dorsal papillae on each abdominal segment. The adult stage has been reared for only two species of this group, the female for C. eumaris and the male for C. recurvata.]

Range: AL, AR, CT, IL, KY, LA, MD, MS, OH, MO, TN, DC

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

Reference: https://www.biodiversitylibrary.org/page/38636615#page/68/mode/1up