Subgenus Orthostigma sensu stricto

Figs 36, 37

Orthostigma Ratzeburg, 1844: 53; Königsmann 1969: 2; Shenefelt 1974: 997; Wharton 1980: 85; Tobias 1986: 117; van Achterberg 1988: 44; Chen and Wu 1994: 99; Fischer 1995: 670; Belokobylskij 1998 a: 209; Fischer 2002: 102; Wharton 2002: 91; Belokobylskij and Tobias 2007: 10; Yu et al. 2016; Zhu et al. 2017: 68; Peris-Felipo and Belokobylskij 2020: 412.

Type species.

Aphidius flavipes Ratzebrug, 1844, by monotypy.

Material examined.

Several species from Palaearctic region were studied. For example:

– Orthostigma beyarslani Fischer, 1995: Spain: • ♀, Alicante, Torrevieja, Natural Park of Lagunas de la Mata-Torrevieja, 25. v. 2004 (ENV) .

– Orthostigma laticeps (Thompson, 1895): Spain: • ♀, Alicante, Alcoi, Natural Park of Carrascal de La Font Roja, 20. v. 2004 (ENV) .

– Orthostigma maculipes (Haliday, 1838): Spain: • ♀, Castellon, Pobla de Benifassà, Natural Park of Tinença de Benifassà, 26. ix. 2005 (ENV) .

– Orthostigma mandibulare Tobias, 1962: Russia: Holotype: • ♀, Leningradskaya oblast’. Tolmachevo, border of forest near floodplain of Ostrovenka River, 19. viii. 1960, Tobias [leg] (ZISP).

– Orthostigma pumilum (Nees, 1834): Spain: • ♀, Castellon, Pobla de Benifassà, Natural Park of Tinença de Benifassà, 17. vi. 2004 (ENV) .

– Orthostigma sculpturatum (Tobias, 1962): Spain: • ♀, Castellon, Pobla de Benifassà, Natural Park of Tinença de Benifassà, 28. viii. 2006 (ENV) .

Diagnosis.

Main characters for the subgenus Orthostigma are the long first flagellar segment (longer than second segment), the notauli only anteriorly present on the mesoscutum and fore wing with vein 2 - SR present and more or less distinctly sclerotised.

Remarks.

This is the largest subgenus with about 60 known species from the Holarctic, Oriental, and Australasian regions.