Geometridae (Lepidoptera) of the Baikal region: identification keys and annotated catalogue with notes to DNA barcoding. Part 2. Archiearinae, Geometrinae, Sterrhinae Author Makhov, Ilya text Zootaxa 2023 2023-05-24 5294 1 1 120 http://dx.doi.org/10.11646/zootaxa.5294.1.1 journal article 53377 10.11646/zootaxa.5294.1.1 21429908-97d2-4481-9b7b-6e633dfdbf97 1175-5326 7965063 BD56BFB9-2B1B-441A-822E-385D9059C9AD Key to Hemistola species of the Baikal region 1. Forewing antemedial line (usually present) rather long, convex, more or less parallel to postmedial transverse line and termen, terminates near 1/3 of costa ( Fig. 17B ). Male genitalia: stout sclerotized spine in base of valva comparatively long; posterior projections of sternite A8 usually rounded ( Figs. 34A–34C ). In female genitalia ( Fig. 37E ) lamella postvaginalis small, without distinct semicircular furrow.................................................... H. chrysoprasaria (Esper, 1795) - Forewing antemedial line (often almost absent: Figs. 17A , 57D ) markedly shorter than in H. chrysoprasaria , not convex, sharply curved inwards anteriorly, terminates closer to wing base, near ¼ of costa ( Figs. 16D , 57C ). Male genitalia: stout sclerotized spine in base of valva slightly shorter than in H. chrysoprasaria ; posterior projections of sternite A8 tapered ( Figs. 9A–G , 10 A–H , 34D–34F ). In female genitalia ( Figs. 37F, 37G ) lamella postvaginalis considerably larger than in H. chrysoprasaria , with distinct semicircular furrow................................................ H. zimmermanni (Hedemann, 1879)