Dryocosmus archboldi Melika & Abrahamson, sp. nov.

Diagnosis. The gall most closely resembles that of D. quercuslaurifoliae (Ashmead, 1881), D. quercusnotha (Osten Sacken, 1870) and D. quercuspalustris (Osten Sacken, 1861). In D. archboldi, the gall narrows to a pointed tip (Fig. 314), while in D. quercuslaurifoliae, D. quercusnotha and D. quercuspalustris the galls are always rounded, never with a pointed tip (Figs. 315–316).

Gall. (Fig. 314). An integral, succulent unilocular leaf gall, reaching 5 mm in diameter and height. Conical in shape, narrowing to a point; on underside of leaf; green with paler longitudinal stripes. The larval cell becomes free-rolling once the gall matures. Very rarely the galls develop on catkins.

Biology. Only a sexual generation is known, which induces integral leaf galls on Q. myrtifolia and Q. laurifolia. The galls develop very quickly, appearing in the second half of March and producing adults by the end of March into April.

Distribution. USA, Florida:Archbold Biological Station, Lake Placid, Josephine Creek, Highlands Co.; Coconut Point Sanctuary, Brevard Co.; Gratin Beach Island, Walton Co.; Spanish Ponds Wildlife Reserve, Jacksonville.

- George Melika, James Nicholls, Warren Abrahamson, Eileen Buss, Graham Stone: (2021) New species of Nearctic oak gall wasps (Hymenoptera: Cynipidae, Cynipini)^©