Northernmost records of mosquito species (Diptera: Culicidae) in northwestern Russia Khalin, A. V. Aibulatov, S. V. Zoosystematica Rossica 2021 Zoosyst. Rossica 2021-05-17 30 1 46 63 89V9C 761982 Dolbeskin, Gorickaja et Mitrofanova, 1930 Dolbeskin, Gorickaja et Mitrofanova 1930 Insecta Culicidae Aedes Animalia Diptera 5 51 Arthropoda species rossicus Aedes   Northernmost records( Fig. 2c).  58°31 ′37 ″N, 31°15 ′2.36 ″E, NP, Velikiy Novgorod* ( Kunkova & Fedorova, 2003);  61°49 ′29.68 ″N, 56°49 ′15.96 ″E, Komi, Troitsko-Pechorsk Distr., Yaksha* ( Panyukova & Ostroushko, 2017).   Distribution. NWR: Komi*, NP*. Adjacent countries: Norway, Sweden, Finland, Belarus. Europe (ranging northward to France, Germanyand Poland), European Russia(Chuvash Republic, PermTerritory, Orenburg Province, North Caucasus), South Siberia.   Note.  Aedes rossicushas been recorded within NWR from the Komi Republic(two localities; Panyukova & Ostroushko, 2017) and the Novgorod Province(two localities; Kunkova & Fedorova, 2003). The West-European part of the distribution range of Ae. rossicusis still insufficiently known ( Becker et al., 2010). This species is difficult for identification and can be reliably determined only by the male genitalia. Adult females of Ae. rossicusare externally similar to Ae.  cinereus, differing from the latter in the lighter coloration of scales on the scutum and abdomen. We did not collect Ae. rossicusin NWR; the specimens of Ae. rossicusfrom NWR are absent from the ZIN collection. Probably, the records of Ae.  rossicusfrom the Komi Republicand the Novgorod Provinceresult from misidentifications. 4145056388 NP 58.526943 Velikiy Novgorod 15 31.250656 5 51 1 Novgorod 4145056361 61.82491 Yaksha 1 56.8211 Troitsko-Pechorsk Distr. 5 51 1 Komi