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 Subfamily STERRHINAE Key to the genera 1. Eyes small, diameter of eye less than width of frons ( Figs. 3C, 3F ).............................................. 2 - Eyes developed normally, diameter of eye not less than width of frons ( Fig. 3G )................................... 4 2. Forewing no longer than 6 mm , with no areoles; male antenna bipectinate ( Fig. 3E ).............................................................................................. Cleta Duponchel, 1845 ( jacutica Viidalepp, 1976 ) - Forewing longer than 8 mm , with areole ( Fig. 4E )........................................................... 3 3. Wings with inconspicuous veins, hindwing with no dark transverse lines ( Fig. 31A ); male antenna bipectinate........................................................................ Lythria Hübner, 1823 ( purpuraria Linnaeus, 1758 ) - Both wings commonly with distinct dark transverse lines and veins ( Figs. 22D , 23A ); male antenna ciliate-fasciculate ( Fig. 3D ).............................................................................. Holarctias Prout, 1913 4. Forewing with double areole ( Fig. 4F ).............................................. Rhodostrophia Hübner, 1823 - Forewing without areole or with single areole............................................................... 5 5. Hindwing venation: RS and М1 stalked ( Figs. 4H, 4I )......................................................... 6 - Hindwing venation: RS and М1 arise from discal cell separately ( Fig. 4G )...................... Scopula Schrank, 1802 6. Male antenna bipectinate; hindtibia of female with 2 pairs of spurs.............................................. 7 - Male antenna filiform; hindtibia of female with one pair of spurs.............................. Idaea Treitschke, 1825 7. Forewing venation: R1 arises from areole before branching of vein R5 ( Fig. 4H ). Hindwing termen usually with angle or projection or short tail on vein М3 . Upper-side of wings pale greyish-yellow, with oblique dark line running from forewing apex to inner margin of hindwing; discal spots not ringed, or absent............................ Timandra Duponchel, 1829 - Forewing venation: R1 arises from common stalk of R2–R4 , after branching of vein R5 ( Fig. 4I ). Hindwing termen rounded, with no conspicuous projection; wings with no oblique line; discal spot of both wings ringed, with white center ( Fig. 29D )........................................................ Cyclophora Hübner, 1822 ( albipunctata Hufnagel, 1767 )