Caryadiplosis venicola Gagne, new species

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

Gall (Figs. 165-166): Occasional, on both Eucarya and Apocarya sections; an elongate, hard swelling of midvein or petiole, usually showing on both sides of leaflet, 5 mm long, 2 mm high when single chambers, longer and broader when several chambers are in tandem; exterior tan to brown, rough; wall of uniform thickness; larval chamber elongate; an exit hole eventually develops on lower leaf surface through which the full-grown larva falls to ground.

Biological notes. — My earliest-season sighting of galls in central Maryland was on July 22. 1 noticed them more commonly in Maryland and elsewhere in late August and September. Larvae left the galls on collected leaves in autumn, burrowed into the soil, and spun cocoons. In early April the following year, full-grown pupae found their way to the surface of the soil and adults emerged.

Range: AR, FL, GA, MD, MO, NC, OH, OK, TN, WV

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

Reference: https://www.biodiversitylibrary.org/page/38636615#page/96/mode/1up