Apomyelois bistriatella ( Hulst, 1887 )

Apomyelois bistriatella ( Hulst, 1887) View in CoL

( Figs 11–12 View FIGURES 11–15 , 16–17 View FIGURES 16–20 )

Material examined: Zhytomyr reg., Korosten distr., 1.5 km NE Voroneve vill., left bank of the r. Vuzh , at light, 3–4.VI.2019, 1♀ V. Yepishin leg. and gen. prep. 834.25s . Luhansk reg., Siverskodonetsk distr., S vic. of Sievierodonetsk [Siverskodonetsk], dacha near the lake Kleshnia , at light, 20.VIII.2021, 1♀ S. Demyanenko leg.; gen. prep. 626.22s V. Yepishin (all VYe) .

Distribution in Ukraine: Kyiv reg.: iNaturalist 2025 (122913615). First record from Zhytomyr region and first confirmed record from Luhansk region (see Remarks section of Apomyelois cognata ).

Remarks. The adults of A. bistriatella ( Figs 11–12 View FIGURES 11–15 ) are quite similar to A. cognata ( Figs 13–15 View FIGURES 11–15 ), but differ by darker wing colouration and often smaller sizes. In female genitalia, the corpus bursae is elongated, spindle-shaped, the apex is more pointed ( Figs 16–17 View FIGURES 16–20 ), in A. cognata , the shape of corpus bursae is pyriform, and the apex is more rounded ( Figs 18–19 View FIGURES 16–20 ). The male genitalia of A. bistriatella are almost indistinguishable from those of A. cognata , the most important feature is the almost flat, with a slight depression, top of the transtilla, which in A. cognata is noticeably bifurcated ( Fig. 20a View FIGURES 16–20 ).