Rotastruma stenoceps

Identification

 * With head in full-face view the occipital margin conspicuously concave, the sides of the head convex. (Singapore; East Malaysia: Sarawak) . . . . . Rotastruma recava


 * With head in full-face view the occipital margin more or less transverse, the sides of the head approximately straight. (China: Guangdong) . . . . . Rotastruma  stenoceps

Distribution based on Regional Taxon Lists
Palaearctic Region: China.

Nomenclature

 *  stenoceps. Rotastruma stenoceps Bolton, 1991: 9, figs. 13, 15 (w.) CHINA.

Worker
Holotype. TL 3.7, HL 0.82, HW 0.68, CI 83, SL 0.56, SI 82, PW 0.48, AL 0.92. Maximum diameter of eye 0.22 (0.32 x HW). Answering the description of Rotastruma recava but lacking its concave occipital margin. Sides of head behind eyes with projecting hairs in stenoceps but hairs absent in front of the occipital corners in recava. Propodeal spines of stenoceps shorter and less downcurved than in recava, and its propodeal spiracle closer to the apex of the metapleural gland bulla.

Type Material
Holotype worker, China: Guangdong, DingHu Mts, 60 km W. of Guangzhou, vi.1983 (Z. Boucek).