Orthostigma (Whartonstigma), 2020

Peris-Felipo, Francisco Javier & Belokobylskij, Sergey A., 2020, Whartonstigma subgen. nov., a new subgenus of the genus Orthostigma Ratzeburg 1844 from Australasia (Hymenoptera: Braconidae: Alysiinae), Zootaxa 4845 (3), pp. 410-424 : 412-413

Subgenus Whartonstigma Peris-Felipo , subgen. nov.

Type species. Orthostigma gallowagi Wharton 2002 .

Diagnosis of subgenus. First flagellomere about as long as or longer than second flagellomere ( Fig. 1B, C ). Mandibles small, with distinct complete transverse curved carina; its upper (first) tooth smallest, narrow and pointed, middle (second) rather long and acuminate, lower (third) tooth widest, evenly rounded. Paraclypeal fovea short, far removed from edge of eyes. Mesoscutum without midpit; notauli not developed dorsally on most part of mesoscutum; precoxal sulcus present, usually wide; propodeum usually without areas. In fore wing marginal cell not shortened; vein 2-SR absent ( Fig. 2B ), first and second submarginal cells fused. Metasoma more or less distinctly compressed laterally. Ovipositor sheath shorter than metasoma, often up-curved.

Remarks. Members of this subgenus are characterised by having the first flagellomere about as long as or longer than second flagellomere and by the absence of vein 2-SR with fused first and second submarginal cells.

Hosts. Unknown.

Etymology. Named in honour Dr Robert A. Wharton, well-known American hymenopterist for his contribution into the study of the World Braconidae , especially Alysiinae and Opiinae .

Included species. Orthostigma (Whartonstigma) gallowagi Wharton, 2002 , O. (W.) longipede Peris-Felipo , sp. nov., O. (W.) papuae Peris-Felipo , sp. nov., O. (W.) tropicale Wharton, 2002 .

Figures

FIGURE 1. First and second flagellomeres of antenna. A. First flagellomere shorter than second flagellomere [Orthostigma (Africostigma) karkloofense Fischer, 1995]. B, C. First flagellomere as long as or longer than second flagellomere [B: O. (Whartonstigma) longipede sp. nov.; C: O. (Orthostigma) mandibulare (Tobias, 1962)].

FIGURE 2. Fore wing. A. Vein 2-SR present [Orthostigma (Orthostigma) mandibulare (Tobias, 1962)]. B. Vein 2-SR absent [Orthostigma (Papuastigma) papuae sp. nov.].