Xylomoia strix strix Mikkola, 1980

Xylomoia strix strix Mikkola, 1980 View in CoL

Figs 1 View Figures 1–4 , 4 View Figures 1–4 , 11–16 View Figures 5–16 , 17–29 View Figures 17–29 , 30–35 View Figures 30–41 , 46–49 View Figures 46–49 , 50–53 View Figures 50–53 , 54–57 View Figures 54–57 , 58–61 View Figures 58–61 , 62–64 View Figures 62–64 , 72–74 View Figures 72–74 , 75–80 View Figures 75–80 , 81–83 View Figures 81–83 , 84–86 View Figures 84–86

Xylomoia strix strix Mikkola, 1980 View in CoL : Notulae Entomologicae 60: 220. TL: “ Latvia, Turaida . ” Holotype male, ZMHF [examined].

Diagnosis.

Distinguished from X. strix stangelmaieri by broader dark field on forewings (Figs 11 View Figures 5–16 – 35 View Figures 30–41 ) and smaller pollex (Figs 46 View Figures 46–49 – 64 View Figures 62–64 ), from X. strix retinax by actual presence of dark field on forewing (Figs 11 View Figures 5–16 – 35 View Figures 30–41 ) and fold of ductus bursae (Figs 72 View Figures 72–74 – 86 View Figures 84–86 ); from both subspecies genetically, having an average p - distance of 1.89 % from X. strix stangelmaieri and 0.33 % from X. strix retinax . Average p - distance between X. strix strix and X. graminea is 2.55 %, X. strix strix and X. chagnoni , 7.64 %, and X. strix strix and X. indirecta , 8.05 % (Fig. 90 View Figure 90 ). Found in north, central, and east Europe with the westernmost presence in the Volga region (Figs 91 View Figures 91, 92 , 92 View Figures 91, 92 ).

Variability.

Adults. Blackish streak in medial field varies from narrow (e. g., Figs 20 View Figures 17–29 , 22 View Figures 17–29 , 33 View Figures 30–41 ) to wide (e. g., 18, 23), its reddish-brown bounds vary from well-pronounced (e. g., Figs 15 View Figures 5–16 , 21 View Figures 17–29 ) to non-existing (e. g., Figs 12 View Figures 5–16 , 19 View Figures 17–29 ). Dark streak may expand towards costa and cover medial field (Figs 11–15 View Figures 5–16 , 19 View Figures 17–29 , 26 View Figures 17–29 ). Forewings may have somewhat reddish (Figs 16 View Figures 5–16 , 23 View Figures 17–29 , 30 View Figures 30–41 , 33 View Figures 30–41 ), yellowish (Figs 11–15 View Figures 5–16 , 18 View Figures 17–29 , 24 View Figures 17–29 , 26 View Figures 17–29 ) or greyish tinge (Figs 22 View Figures 17–29 , 25 View Figures 17–29 , 27–29 View Figures 17–29 , 31–32 View Figures 30–41 , 34–35 View Figures 30–41 ); submarginal field may be pale- (e. g., Fig. 11 View Figures 5–16 ) or dark-colored (e. g., Fig. 17 View Figures 17–29 ). Male genitalia. Uncus may gradually get thin towards apex (e. g., Figs 46 View Figures 46–49 , 59 View Figures 58–61 ) or only be thin near its apex (e. g., Figs 51 View Figures 50–53 , 58 View Figures 58–61 ), saccus may be relatively small and narrow (e. g., Figs 48 View Figures 46–49 , 62 View Figures 62–64 ) or large (e. g., Figs 54 View Figures 54–57 , 63 View Figures 62–64 ), carina may be reduced (Figs 56–57 View Figures 54–57 , 59 View Figures 58–61 , 61 View Figures 58–61 ) or well-developed (e. g., Figs 48 View Figures 46–49 , 60 View Figures 58–61 , 64 View Figures 62–64 ), basal cornutus varies in size from small (e. g., Fig. 61 View Figures 58–61 ) to large (e. g., Fig. 58 View Figures 58–61 ) and may be more or less bent, medial cornutus may be almost straight (e. g., Fig. 46 View Figures 46–49 ), c-shaped (e. g., Fig. 62 View Figures 62–64 ) or s-shaped (e. g., Fig. 60 View Figures 58–61 ) and varies in size. Female genitalia. Antevaginal plate slightly varies in thickness, bursa copulatrix may narrow around connection with ductus bursae (e. g., Fig. 76 View Figures 75–80 ) and may have one (Figs 73 View Figures 72–74 , 74 View Figures 72–74 , 77 View Figures 75–80 , 85 View Figures 84–86 ) or two (Fig. 86 View Figures 84–86 ) frontal signa, hind signum varies in size.

Distribution area.

Finland, Estonia, Latvia, Lithuania, Poland, Belarus, Ukraine, and Russia ( Leningrad, Yaroslavl, Moscow, Tula, Saratov, Samara Oblasts and Republic of Tatarstan).