Catalogue of Lepidoptera of Omsk Oblast (Russia). Macrolepidoptera. Families: Hepialidae, Brachodidae, Cossidae, Sesiidae, Limacodidae, Zygaenidae, Thyrididae, Drepanidae, Uraniidae, Geometridae, Lasiocampidae, Lemoniidae, Endromididae, Saturniidae, Sphingidae, Notodontidae, Lymantriidae, Arctiidae, Syntomidae, Erebidae, Nolidae, Noctuidae, Hesperiidae, Papilionidae, Pieridae, Lycaenidae, Nymphalidae, Satyridae

A total of 972 species of Macrolepidoptera belonging to 28 families are reported for the territory of Omsk Oblast. The most numerous is Noctuidae family represented by 358 species, followed by Geometridae (252 species), Erebidae (48), Lycaenidae (42), Arctiidae (40), Nymphalidae (37), Satyridae and Notodontidae (27 species in each family), Pieridae, Sphingidae, Lasiocampidae (17 species in each family), Hesperiidae (15), Lymantriidae (13), Zygaenidae and Sesiidae (12 species in each family), Acta Biologica Sibirica 6: 139–226 (2020) doi: 10.3897/abs.6.e53005 https://abs.pensoft.net Copyright Svyatoslav A. Knyazev. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. RESEARCH ARTICLE 140    Svyatoslav A. Knyazev / Acta Biologica Sibirica 6: 139–226 (2020) Drepanidae (10), Nolidae (7), Cossidae (4), Papilionidae and Hepialidae (3 species in each family), Syntomidae, Saturniidae and Lemoniidae (2 species in each family), Endromididae, Uraniidae, Thyrididae, Limacodidae and Brachodidae (1 species in each family). A total of 13 species were registered in Omsk Oblast for the first time, among them Pennisetia hylaeiformis (Laspeyres, 1801), Synanthedon martjanovi Sheljuzhko, 1918, Synanthedon spheciformis ((Denis & Schiffermüller, 1775), Synanthedon uralensis (Bartel, 1906, Bembecia sp., Chamaesphecia astatiformis (Herrich-Schäffer, 1846), Alcis jubata (Thunberg, 1788), Dysstroma infuscata (Tengström, 1869), Scopula tessellaria (Boisduval, 1840), Panchrysia deaurata (Esper, 1787), Amphipoea crinanensis (Burrows, 1908), Euxoa eruta (Hübner, (1827), Xestia sexstrigata (Haworth, 1809). The list of doubtful and erroneously records is given.


Introduction
The territory of Omsk Oblast is situated in the centre of Eurasia on the South of the West-Siberian Plain between 53°30'N−57°40'N and 70°30'E−76°00'E, covered more than 139,700 km 2 . This region measures 6oo km from north to south and 300 km from west to east. The Omsk Oblast borders with Tyumen region in the west, north-west and north, with Tomsk region in the northeast, with Novosibirsk region in the east (Russian Federation), and with the Republic of Kazakhstan in the south and south-west (Fig. 1). The territory of the Omsk Oblast is crossed from the south to the north by the river Irtysh. The characteristic features of the southern part of the West Siberian Lowland are clearly manifested on the territory of the Omsk Oblast, especially the exceptional plainness, uniformity of the relief, continental climate and a change in geographical landscapes. In the south is the steppe, gradually turning into steppe, forest and swampy taiga to the north. Significant bogging is also typical in the northern part of the territory with rare interspersing small sphagnum bogs in the forest-steppe zone, called ryams.
The beginning of the study of Lepidoptera in the Omsk Oblast was sterted in the works of the first entomologists-researchers of Siberia at the end of the 19th and beginning of the 20th centuries (Erschoff 1870;Tshugunov 1911;Vnukovsky 1926). The first attempt to inventory the Lepidoptera fauna of the Omsk Oblast was made by Sergey D. Lavrov at the beginning of the 19th century (Lavrov 1927). He cites 480 species of Lepidoptera (411 of them Macrolepidoptera), noted mainly in the city of Omsk and its immediate environs. Futhermore, this information was slightly supplemented by other researchers whose publications were based on episodic observations, or were mainly considered the harmful species (Bei-Bienko 1928;Vnukovsky 1930;Logatshev 1949;Shvetsova 1957;Afonskaya 1966). A new wave of faunistic researches in the region in the late 1990s and early 2000s gave a series of new publications on butterflies of the Omsk region ; Kosheleva 1999Kosheleva , 2001Kosheleva , 2006; Knyazev and Kosterin 2003; ). Occasional references to Omsk materials are found in fundamental works on Sibe-ria (Zolotarenko 1970;Yakovlev 2004;Vasilenko 2006). During this period, the list of diurnal butterflies was completed (Knyzev 2009), and available data on moths families were initially compiled. Dirung 2005-2019 there was a surge in interest in the study of moths mainly caused by the improvement of the technical and information equipment of regional entomologists. This resulted in several representative reports on most groups of moths (Knyazev et al. , 2010b

Material and methods
We analyzed all known faunistic publications on Lepidoptera of the Omsk Oblast from 1870 to 2019. The author private collection as the largest regional collection of Lepidoptera in the Omsk Oblast served as the principal database for compiling the catalog. The visual recordings of some species were also used.
The daylight species were collected by means of butterfly net, moths were attracting to the mercury lamps 250W, already with UV-traps, and most of the Sesiidae specimens were collected using pheromones.
The taxonomy is accepted according to the new edition of the Lepidoptera Catalog of Russia (Sinev 2019) with minor changes. We have included some information I the test for each species. This information was coded by REF − bibliographic references reported the species in the region; LOC − localities where the species was registered; FP − imago flight period (conventionally, months of flight are indicated in Roman numerals). Species firstly reported for the Omsk Oblast are marked by asterisk. The species are continuously numbered inside the catalogue; list of taxa erroneously or doubtfully indicated for this territory is given at the end of the main systematic list.
Below is the list of data localities presented in alphabetical order with geographical coordinates. The serial number of each locality corresponds to the number on the map (Fig. 2).  1  Hepialidae  3  15  Sphingidae  17  2  Brachodidae  1  16  Notodontidae  27  3  Cossidae  4  17  Lymantriidae  13  4  Sesiidae  12  18  Arctiidae  40  5  Limacodidae  1  19  Syntomidae  2  6  Zygaenidae  12  20  Erebidae  48  7  Thyrididae  1  21  Nolidae  7  8  Drepanidae  10  22  Noctuidae  358  9  Uraniidae  1  23  Hesperiidae  15  10 Geometridae  252  24  Papilionidae  3  11 Lasiocampidae  17  25  Pieridae  17  12 Lemoniidae  2  26  Lycaenidae  42  13 Endromididae  1  27  Nymphalidae  37  14 Saturniidae  2  28  Satyridae    ,. We stated that the territory of the Omsk Oblast is one of the most well-studied regions of Siberia in relation to the Macrolepidoptera fauna. However, this list is not final and should be updated. We assumed that about 110 Macrolepidoptera species can be added to the list with some rare and local species from the steppe and forest-steppe zones we were not able to find in the Omsk Oblast, but these species were reported from the neighboring regions of Russia and Kazakhstan.