Orthostigma Ratzeburg, 1844

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 : 411-412

Genus Orthostigma Ratzeburg, 1844

Ratzeburg, 1844: 53; Königsmann, 1969: 2; Shenefelt, 1974: 997; Wharton, 1980: 85; Tobias, 1986: 117; van Achterberg, 1988: 44; Chen & Wu, 1994: 99; Fischer, 1995: 670; Belokobylskij, 1998: 209; Fischer, 2002: 102; Wharton, 2002: 91; Belokobylskij & Tobias, 2007: 10; Yu et al., 2016; Zhu et al., 2017: 68.

Type species. Aphidius flavipes Ratzebrug, 1844: 71 .

Synonyms. Delocarpa Foerster, 1863 ; Ischnocarpa Foerster, 1863 ; Africostigma Fischer 1995 ; Patrisaspilota Fischer, 1995 .

Diagnosis. Mandibles small, simple, tridentate, weakly curved outwards, with complete transverse curved carina on anterior third or submedially; upper (first) tooth smallest, narrow and acuminate, middle (second) rather long and acuminate, lower (third) tooth widest, evenly rounded. Paraclypeal fovea short, far removed from edge of eyes. Mesoscutum always with midpit; notauli usually not developed on most part of dorsal surface of mesoscutum, but sometimes rather well developed, almost complete and joined posteriorly with mesoscutal pit or at least sometimes reaching more than half of mesoscutum; precoxal sulcus present and usually wide; propodeum with different types of sculpture, often without areas. In fore wing marginal cell not shortened; vein 2-SR present and distinctly sclerotized; veins m-cu and cu-a always postfurcal; first subdiscal cell closed postero-apically by vein CU1a. Metasoma more or less distinctly compressed laterally. Ovipositor sheath not longer than metasoma, often upcurved.

Key to subgenera of Orthostigma

2(1). Vein 2-SR present and distinct ( Fig. 2A )................................................................... 3 - Vein 2-SR completely absent ( Fig. 2B ). [ Australia, Papua New Guinea]................... Whartonstigma subgen. nov.

3(1). Notauli dorsally rather well developed on mesoscutum and usually reaching mesoscutal pit ( Fig. 3A ).................... .................................................................................. Patrisaspilota Fischer - Notauli dorsally absent on most part of mesoscutum ( Fig. 3B )................................... Orthostigma s. str.

Figures

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

FIGURE 3. Mesoscutum in dorsal view. A. Notauli well developed dorsally and almost complete [Orthostigma (Patrisaspilota) glabrifaciale (Fischer, 2010)]. B. Notauli absent dorsally on most part of mesoscutum [O. (Papuastigma) papuae sp. nov.].