On the taxonomy of the genus Isochlora Staudinger with descriptions of two new species from Mongolia and Qinghai, China (Lepidoptera: Noctuidae: Noctuinae).

Two new species of the genus Isochlora Staudinger, 1882 are described: I. hreblayi Volynkin, Tth, Titov & Saldaitis, sp. n. (western Mongolia) and I. kozlovi Volynkin, Titov, Matov & Saldaitis, sp. n. (Qinghai Province, China). The type species of the genus-group names Chamyla Staudinger, 1900 and Grumia Alphraky, 1892 (I. arctomys Alphraky, 1897 and I. flora (Alphraky, 1892), respectively) are examined, and their synonymy with Isochlora is revised. The synonymy of Chamyla idia Staudinger, 1900 with Isochlora arctomys Alphraky, 1897 is revised as junior synonymies. Lectotypes are designated for Isochlora arctomys Alphraky, 1897, Chamyla idia Staudinger, 1900 and Grumia flora Alphraky, 1892. Isochlora intricans (Alphraky, 1882) is reported from Kazakhstan for the first time. Adults as well as male and female genitalia are illustrated.

On the identity of Conisania leuconephra Draudt, 1950 with a description of a new species from Xizang, China (Lepidoptera: Noctuidae: Noctuinae).

The identity of Conisania leuconephra (Draudt, 1950) from Yunnan (China) is revised. A new species Conisania sejilaensis sp. nov. is described from Xizang (China). The adults as well as the male and the female genitalia of the new and related species are illustrated.

On the taxonomy of the Conistra generic complex with descriptions of three new genera and a new species (Lepidoptera: Noctuidae: Noctuinae).

Three new genera of the Conistra Hbner generic complex are described: Marcinistra gen. n. (Type species: Conistra metallica Hreblay L. Ronkay, 1998), Baimistra gen. n. (Type species: Conistra (s. l.) baima Benedek, Babics Saldaitis, 2011) and Vargalorta gen. n. (Type species: Agrocholorta taiwanawae L. Ronkay, G. Ronkay, Gyulai Varga, 2017). A new species, Marcinistra leichina sp. n. is described from north-western Yunnan Province of China. The genus Suginistra L. Ronkay, G. Ronkay, Gyulai Varga, 2017 is considered to be closely related to Conistra. Seven new combinations are established: Marcinistra metallica (Hreblay L. Ronkay, 1998), comb. n., Baimistra baima (Benedek, Babics Saldaitis, 2011), comb. n., Baimistra pusilla (Benedek, Babics Saldaitis, 2011), comb. n., Vargalorta taiwanawae (L. Ronkay, G. Ronkay, Gyulai Varga, 2017), comb. n., Vargalorta nawae (Matsumura, 1926), comb. n., Vargalorta amamiensis (Shikata, 2015), comb. n. and Vargalorta kimurai (Shikata, 2015), comb. n. A check-list of valid taxa of the Conistra generic complex is provided. The genus Edentelorta L. Ronkay, G. Ronkay, Gyulai Varga, 2017 (Type species: Gortyna edentata Leech, 1889) is synonymised with Etlorta Kononenko, 2016 erected for the same type species: Etlorta Kononenko = Edentelorta L. Ronkay, G. Ronkay, Gyulai Varga, syn. n.; the combination of the type species of the genera is revised: Etlorta edentata (Leech, 1889), comb. rev. Adults, male and female genitalia of Marcinistra gen. n., Baimistra gen. n., Vargalorta gen. n., Suginistra and four subgenera of Conistra are illustrated.