The first annotated checklist of the long-horned Orthoptera (Ensifera) of Tuva and adjacent territories is presented. This list is based on numerous published and unpublished data. A total of 22 species belonging to 2 families, namely Tettigoniidae and Gryllidae, are known as occurring in Tuva. Six species are recorded from the region for the first time, namely Tettigonia cantans (Fuessly), Platycleis albopunctata (Goeze), Platycleis affinis Fieber (also new for the Asian part of Russia), Roeseliana fedtschenkoi (Saussure), Poecilimon intermedius (Fieber), Acheta domesticus (Linnaeus) (synanthrope). Montana tomini (Pylnov) is also mentioned for the southern part of Krasnoyarsk Region for the first time. Six species are known from the adjacent areas and listed as probably occurring in the region.

A total of 30 species belonging to the family Acrididae (the tribe Gomphocerini from the subfamily Gomphocerinae, and the subfamily Locustinae = Oedipodinae), are known as occurring in Tuva. Two taxa are recorded from the region for the first time, namely Chorthippus dorsatus orientalis Bey-Bienko and Sphingonotus nebulosus (Fischer de Waldheim). At least 6 species and a subspecies are known from the adjacent areas and listed as probably occurring in the region. Distribution patterns and taxonomic composition of Orthoptera fauna of Tuva are briefly discussed.

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ISSN (online): 1802-8829http://www.eje.cz many species diffi cult to identify. The results of recent cytogenetic and molecular genetic studies contradict morphological and bioacoustic data (Warchalowska-Sliwa et al., 2008;Grzywacz-Gibała et al., 2010). We believe that the investigation of the acoustic signals of Isophya males as taxonomic characters could not only be useful for species diagnostics but also provide additional material for a better understanding of the taxonomic position of several species and evolutionary trends in the genus Isophya. Songs of specimens of different species collected in the eastern part of the range of this genus can provide additional data for analysis of the geographical variability in sound signals. Previously data on the songs of several species were published by Zhantiev and co-authors (op. cit.). However, these results do not contain a full description of song structure, frequency spectra and stridulatory fi les. This article fi lls these gaps and provides new data about some rare species. MATERIALS AND METHODSAdults or nymphs of different instars of bush-crickets collected in natural habitats were brought to the laboratory where bioacoustic and most behavioural experiments were performed. Tape recordings of the calling song of I. doneciana were obtained only in the fi eld. We usually used 3-5 specimens for bioacoustic studies, but in the cases of some rare species only one male was available (see note in the text).Laboratory

The first annotated checklist of the short-horned Orthoptera (Caelifera) of Tuva and adjacent territories is presented. This list is based on numerous published and unpublished data. A total of 42 species belonging to 3 families, namely Tetrigidae (6), Tridactylidae (1), and Acrididae (35 species from the subfamilies Melanoplinae and Calliptaminae and from the gomphocerine tribes Chrysochraontini, Arcypterini, Aulacobothrini, and Stenobothrini), are known as occurring in Tuva. Seven species are recorded from the region for the first time, namely Tetrix similans (Bey-Bienko), Zubovskya koeppeni (Zubovsky), Podismopsis poppiusi (Miram), P. jacuta Miram, Stenobothrus nigromaculatus (Herrich-Schäfer), S. carbonarius (Eversmann), and Omocestus petraeus (Brisout de Barneville). Zubovskya mongolica Storozhenko, comb. resurr. is mentioned for the southern part of the Republic of Khakassia for the first time. The first record of Podismopsis jacuta Miram in Krasnoyarsk Region is also published. At least three species are known from the adjacent areas and listed as probably occurring in the region.