Abstract
Original data on the number of families, genera, and species in the lepidopterous fauna of the Upper Volga basin are presented. The families Noctuidae, Geometridae, and Tortricidae predominate in the regional fauna, the most diverse genera being Eupithecia, Epinotia, Phyllonorycter, Elachista, Acleris, Scopula, Acronicta, Apamea, Dichrorampha, Argyresthia, Agonopterix, and Idaea. Similarity between the lepidopterous faunas of the Upper Volga basin and other forest regions of European Russia (for Lepidoptera as a whole and for separate families) is estimated. Some trends in the latitudinal and longitudinal changes of the faunas are determined; closer similarity between the faunas of regions located at the same latitude is demonstrated.
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