Genus Panerema Foerster, 1863

Panerema Foerster, 1863: 263; Szépligeti 1904: 203; van Achterberg 1988: 47; Fischer 2002: 102; Belokobylskij and Kula 2012: 43; van Achterberg and Vikberg 2014: 3; Yu et al. 2016.

Type species.

Panerema inops Foerster, 1863, by original designation (lost) (Figs 26, 27).

Material examined.

( Panerema inops): Germany: • ♀, Zaarensee, Seggenwiese, 29. vi. 1998 (v. Broen leg.) (PFEC) . The Netherlands: • ♀, Cadier, 5. v. 1975 (B. v. Aartsen leg.) (RMNH) .

Diagnosis.

Mandible small, simple, tridentate, often with upper (first) tooth diminished with respect to lower (third) tooth. Paraclypeal fovea short, not reaching more than half distance between clypeus and inner margin of eyes. Third antennal segment distinctly elongated. Mesoscutum with or without mesoscutal pit; notauli usually present only in anterior part of mesoscutum. Scutellum with a transverse crenulate depression subposteriorly. Females are brachypterous with strongly reduced wings (commonly in this group of genera males are brachypterous but females macropterous). The preserved distal anterior veins in such wing are distinctly thickened, with veins r and 2 - SR of the fore wing absent but hind wing with closed cells (van Achterberg 1988; Belokobylskij and Kula 2012). Metasoma of ♀ more or less distinctly compressed laterally. Ovipositor sheath usually not longer than metasoma.

Remarks.

During many years, Panerema was considered as a valid genus (van Achterberg 1988; Fischer 2002; Belokobylskij and Tobias 2007; Belokobylskij and Kula 2012). As shown by van Achterberg (1988) despite its uncertain position of this taxon it has two synapomorphies, viz., the scutellum has a transverse crenulate depression subposteriorly and the third antennal segment is at least 1.5 × longer than the fourth segment. The value of both characters is uncertain (although perhaps apomorphic), but the diagnostic character study carried out shows that Panerema deserves the status of genus due to its distance from other genera.