Valenzuela flavidus

Valenzuela flavidus (Stephens, 1836) Vishnyakova, 1964 (Caecilius flavidus Steph.); Danka, 1968; Ostrovsky, 2016, 2017, 2019. MATERIAL EXAMINED. Buda-Koshelevo district, Uvarovichi urban settlement, the place and date of collection are unknown, 1♀, collected by hand; Gomel district, W of “Romantika” gardens near Klenki village, 52°27′49″N, 31°05′25″E, 121 m a.s.l., flood meadow, in an abandoned bird's nest on the bushes, 3.10.2021, 1♀, collected by hand with exhauster; Gomel district, “Glushets” gardens, 52°15′28″N, 30°50′40″E, 121 m a.s.l., on light in the window of the dacha, 22.08.2023, 1♀, collected by hand with exhauster. DISTRIBUTION. Holarctic species. Known from Latvia, Lithuania, Ukraine, Poland and all over European Russia (incl. North Caucasus) [Jacobson, Bianki, 1905; Zavarzin, 1906; Danka, 1960, 1964, 1968; Vishnyakova, 1959, 1964; Martini, 1975; Savel’ev, 1997; Golub, 2005, 2007, 2016; Szawaryn et al., 2020; Ostrovsky, Aleksandrowicz, 2022; Georgiev, Ruchin, 2023; Georgiev et al., 2023; Ostrovsky et al., 2023]. NOTES. A medium sized (c. 4 mm) parthenogenetic barkfly that is mainly found on branches of deciduous trees and bushes though occasionally on conifers (evergreen) branches. Frequently, but not always, has a striking yellow colour.