Key to Amphibolips species of Panama 1. Metatarsal claw with large acute basal lobe or secondary tooth (Figs. 2 D, 4D); sculpture of mesoscutum and mesopleuron strongly and coarsely rugose; notauli complete or slightly faint in anterior one third of mesoscutum, crossed by transversal sculpture (Figs. 1 C, 3D); median area of propodeum sculptured and pubescent (Figs. 1 F, 3F). Metasomal tergites with micropuntures (Figs. 2 H, 3E). Forewing strongly infuscate or with smoky area in radial cell (Figs. 7 C, 7E). Galls globose or spindle-shaped on twigs (Figs. 8 A, 8D).................................................................... 2 - Metatarsal claws simple (Fig. 6 G), without basal lobe or tooth; sculpture of mesoscutum and mesopleuron weaker; notauli traceable only in posterior one third, deep, broad and smooth (Fig. 5 C); median propodeal area smooth and glabrous (Fig. 5 E). Metasomal tergites without micropunctures (Fig. 6 H). Forewing almost hyaline, only slightly smoked (Fig. 7 H). Galls spherical, on leaves (Fig. 8 G)........................................................................... A. salicifoliae 2. Notauli complete, slightly faint along coarse surface of anterior one third of mesoscutum; posteriorly narrow and slightly convergent (Fig. 1 C); scutellum deeply emarginate at the posterior margin (Fig. 1 C); scutellar foveae ellipsoid, with well defined posterior margins. Posterior 1/3 of T2 with a band of well-visible micropunctures (Fig. 2 H); forewing very heavily and entirely smoky, except clear and wide band extending across wing from radial cell to ventral margin (Fig. 7 C). Gall globose, oak apple type, with inner structure soft, juicy (Figs. 8 B, 8C) ............................ ................................................................................................................................................ Amphibolips castroviejoi - Notauli complete and broad; posteriorly broader and strongly convergent (Fig. 3 D); scutellum only slightly emarginate at the posterior margin; scutellar foveae relatively larger, with straight anterior margins and faint posterior margins (Fig. 3 D). Posterior 1/3 of T2 with a band of hardly visible micropunctures; forewing only slightly smoked, with a large brown patch at the base of the radial cell (Fig. 7 E). Gall spindle-shaped (Fig. 8 D–E) ............................. ....................................................................................................................................................... Amphibolips aliciae.

Published as part of Medianero, Enrique & Nieves-Aldrey, José Luis, 2010, The genus Amphibolips Reinhard (Hymenoptera: Cynipidae: Cynipini) in the Neotropics, with description of three new species from Panama, pp. 47-62 in Zootaxa 2360 on page 61, DOI: 10.5281/zenodo.275711