An illustrated key to the species of subgenus Gyrostoma Kirby, 1828 (Hymenoptera, Vespidae, Polistinae) from China, with discovery of Polistes (Gyrostoma) tenuispunctia Kim, 2001 Author Tan, Jiang-Li Author Achterberg, Kees Van Author Duan, Mei-Jiao Author Chen, Xue-Xin text Zootaxa 2014 3785 3 377 399 journal article 46049 10.11646/zootaxa.3785.3.3 85cfbf94-de72-4c76-8e30-fad5e70fd3d4 1175-5326 253064 EFCFD90F-8367-48CC-8D89-E1E4506D276F Key to subgenera of the genus Polistes from China 1. Clypeus latero-dorsally extending far above the anterior tentorial pits ( Fig. 1 a). Pronotal fovea absent ( Fig.1 b); mesepisternum without dorsal mesepisternal groove ( Fig. 1 c) and epicnemial carina ( Fig. 1 d)................ Polistella Ashmead, 1904 FIGURE 1. Polistes japonicus de Saussure, 1858 (left, female; mid, male) and P. snelleni de Saussure, 1862 (right, male) - Clypeus latero-dorsally extending not or somewhat far beyond the anterior tentorial pits ( Fig. 2 aa). Pronotal fovea present ( Fig. 2 bb); mesepisternum with dorsal episternal groove ( Fig. 2 cc) or/and epicnemial carina ( Fig. 2 dd)..................... 2 FIGURE 2. Polistes rothneyi f. grahami van der Vecht, 1968 (left and right, female) and male of P. chinensis (Fabricius, 1793) (mid, male). 2. Pronotal carina lamellate ventrad to fovea ( Fig. 3 a); parastigma (prestigma) [pa] of forewing more than 0.5x as long as the basal length of pterostigma [pt] ( Fig. 3 b, b').............................................. Gyrostoma Kirby, 1828 FIGURE 3. Polistes tenebricosus Lepeletier, 1836 (a, b) and P. gi g as (Kirby, 1826) (b'), female. - Pronotal carina shortened or blunt, not lamellate below fovea ( Fig. 4 aa); parastigma relatively short, less than or equal to the 0.5x length of pterostigma ( Fig. 4 bb).................................................... Polistes Latreille, 1802