Subgenus Eusynaldis Zaykov & Fischer, 1982

Eusynaldis Zaykov & Fischer, 1982: 70; Zhu et al. 2017: 19 (as subgenus); Peris-Felipo and Belokobylskij 2019: 21.

Regetus Papp, 1999: 391; Fischer 2002: 101; Zhu et al. 2017: 19 (as synonym).

Adelphenaldis Fischer, 2003: 41; Peris-Felipo et al. 2012: 287; 2014 b: 571; Yu et al. 2016; Zhu et al. 2017: 19 (as synonym).

Type species.

Eusynaldis varinervis Zaykov & Fischer, 1972, by monotypy (Figs 6, 7).

Material examined.

Holotype Regetus balcanicus [= Aspilota (Eusynaldis) globipes] Former Yugoslavia: • ♀, Kosovo, Mts. Sar, Brezovica, 900–1200 m, 20–23. v. 1971 (Papp & Hortatovich leg.) (HNHM) [Hym. Typ. No. Mus. Budapest 7878] .

Diagnosis.

Subgenus Eusynaldis shares all diagnostic characters of Aspilota sensu stricto, except the absent vein 2 - SR of the fore wing.

Remarks.

Regetus Papp, 1999 and Adelphenaldis Fischer, 2003 are junior synonyms of Eusynaldis Zaykov & Fischer, 1982 because both taxa are characterised by the same diagnostic features (Zhu et al. 2017). Moreover, the study of the holotype of Regetus balcanicus Papp, 1999 (the type species of Regetus) showed this species to be a junior synonym of Aspilota (Eusynaldis) globipes (Fischer, 1962) (Peris-Felipo and Belokobylskij 2019) .