Prokius cambrai Nieves-Aldrey & Medianero n. sp.

Host plant. Quercus bumelioides Liebm. (Fagaceae, Quercus sect. Quercus).

Gall (Figs. 6A-C). Galls are irregularly cylindrical with a smooth surface, measuring 5 × 2 mm, with a single internal larval chamber. Galls develop singly or more frequently in close clusters of 2‒5 galls, on the upper side of the leaf blade; the presence of a gall is indicated on the lower side of the leaf by a circular impression (Fig. 6C). The galls are green to red when fresh (Fig. 6A) and black when mature. Galls are relatively abundant on the host plant at Volcán Barú in Panama.

Distribution. Prokius cambrai sp. nov. was found between 1,440 – 2,070 m a.s.l. at Volcán Barú, Chiriqui, Panama.

Biology. Only the sexual generation is known, inducing galls on Quercus bumelioides. Freshly growing galls are present on new leaves in November during the rainy season. Adult insects emerge in May