60 BULLETIN OF THE LITHUANIAN ENTOMOLOGICAL SOCIETY. Volume 2 (30) A TAXONOMIC LIST OF NEPTICULIDAE (LEPIDOPTERA) RECORDED IN THE ŠALČININKAI DISTRICT, A HITHERTO LARGELY UNSTUDIED AREA IN SOUTHEASTERN LITHUANIA AGATA SKORB, ARŪNAS DIŠKUS, JONAS RIMANTAS STONIS Vytautas Magnus University, Studentų St. 39, Vilnius 08106, Lithuania. E-mail: [email protected] Introduction Nepticulidae (or pygmy moths) are known as very specialized Lepidoptera: their larvae live inside green tissues of plants and are predominantly monophagous, though some of them are oligophagous (Diškus & Stonis, 2012). The first general review of the Lithuanian fauna by A. Diškus was published as a chapter in a monograph by Puplesis & Diškus (2003), and it was followed by an amply illustrated monograph by Diškus & Stonis (2012) and a doctoral thesis by Asta Navickaitė (Navickaitė et al., 2014). Although, from a geographical point of view, all the above-mentioned publications covered almost the entire territory of Lithuania, some areas, notably the southeastern region, including the Šalčininkai District, were largely neglected because of insufficient studies and lack of material. In 2011–2013 some Nepticulidae research was done in the Šalčininkai District by the bachelor student A. Bobnis, who recorded 35 Nepticulidae species (Bobnis, unpublished). Our recent leaf-mine collecting in the Šalčininkai District (2015–2018) resulted in the discovery of additional 23 species (in total, 58 species) and the first review of the Nepticulidae fauna of this previously largely unstudied area of southeastern Lithuania. Material and Methods The material treated in the current paper was collected in 2015–2018 by Agata Skorb in the following localities of the Šalčininkai District: Locality Coordinates (LAT, LONG) Eišiškės 54.17033, 25.00163 The Gornostajiškės Village 54.17527, 25.03658 The Dumblė Forest 54.14919, 25.02827 The Panezdiliai Forest 54.21294, 24.97925 The Paraistis Forest 54.21719, 25.06213 The Navickiškės Forest 54.22455, 25.10897 The Nevainionys Forest 54.29266, 24.98194 The material is deposited in the collection of the former Lithuanian University of Educational Sciences (currently the Vytautas Magnus University) and in a private collection of Agata Skorb. The species were identified by Arūnas Diškus and Agata Skorb mostly using the LIETUVOS ENTOMOLOGŲ DRAUGIJOS DARBAI. 2 (30) tomas 61 collected leaf-mine samples, a majority of which were highly specific. The male and/or female adults as well as male and female genitalia were also used for identification of the species when the reared material was available. Methods and protocols for collecting, dissecting and identifying species are outlined in Diškus & Stonis (2012) and Stonis et al. (2014). List of species Johanssoniella acetosae (Stainton, 1854) (Fig. 1) Eišiškės, 13 08 2015, 123 leaf mines on Rumex acetosa, field card no. 018 (leg. A. Skorb); 19 07 2016, 6 ♂, 5 ♀, and 223 leaf mines with mining larvae or empty on R. acetosa (leg. A. Skorb); The Gornostajiškės Village, 18 09 2016, 15 leaf mines on R. acetosa, field card no. 018. Remarks. Previously the species was listed as Enteucha acetosae (see Johansson et al., 1990; Puplesis, 1994; Puplesis & Diškus, 2003; Diškus & Stonis, 2012). Recently a transfer to Johanssoniella was made by Stonis et al., 2018. Althought in Lithuania larvae of J. acetosae mine leaves of Rumex acetosa L. and R. acetosella L., in Šalčininkai District only leaf mines on R. acetosa were detected. Stigmella lapponica (Wocke, 1862) (Fig. 2) The Dumblė Forest, 18 09 2016, 1 old empty leaf mine on B. pendula, field card no. 193; Eišiškės, 17 07 2015, 1 leaf mine on Betula pendula, field card no. 011; 26 06 2015, 2 leaf mines on B. pendula, field card no. 029; 23 06 2016, 6 leaf mines on B. pendula, field card no. 093; 27 06 2016, 9 leaf mines on B. pendula, field card no. 096; 11 08 2016, 8 leaf mines on B. pendula, field card no. 154; The Navickiškės Forest, 24 07 2016, 26 leaf mines on B. pendula, field card no. 134; 24 07 2016, 4 leaf mines on B. pubescens, field card no. 135; The Panezdiliai Forest, 15 07 2016, 6 leaf mines on B. pendula, field card no. 124. Stigmella confusella (Wood & Walsingham, 1894) (Fig. 5) The Navickiškės Forest, 24 07 2016, 35 leaf mines on Betula pendula, field card no. 138; 09 09 2017, 3 leaf mines on B. pendula, field card no. 372. Stigmella freyella (Heyden, 1858) (Fig. 3) Eišiškės, 27 06 2016, 21 leaf mines on Convolvulus arvensis, field card no. 102; 19 07 2016, 10 leaf mines on C. arvensis, field card no. 131; 26 06 2017, 1 ♀, 9 leaf mines on C. arvensis, field card no. 252. Stigmella tiliae (Frey, 1856) (Fig. 6) Eišiškės, 17 07 2015, 10 leaf mines on Tilia cordata, field card no. 008; 27 06 2016, 15 leaf mines on T. cordata, field card no. 100; 11 07 2016, 15 leaf mines on T. cordata, field card no. 119; 16 09 2016, 7 leaf mines on T. cordata, field card no. 190; 27 07 2017, 2 leaf mines on T. cordata, field card no. 299; 27 07 2017, 3 leaf mines on T. europaea, field card no. 300; 07 08 2017, 2 leaf mines on T. cordata, field card no. 317; 07 08 2017, 4 leaf mines on T. europaea, field card no. 318; 20 10 2017, 37 leaf mines on T. cordata, field card no. 453; The Gornostajiškės Village, 06 08 2017, 3 leaf mines on T. cordata, field card no. 312. Stigmella microtheriella (Stainton, 1854) (Fig. 11) The Dumblė Forest, 01 07 2016, 3 leaf mines on C. avellana, field card no. 110; 09 07 2017, 4 leaf mines on C. avellana, field card no. 276; 14 08 2017, 26 leaf mines on C. avellana, field card no. 330; 14 08 2017, 13 leaf mines on C. avellana, field 62 BULLETIN OF THE LITHUANIAN ENTOMOLOGICAL SOCIETY. Volume 2 (30) card no. 337; 07 10 2017, 5 leaf mines on C. avellana, field card no. 420; Eišiškės, 13 08 2015, 9 leaf mines on Corylus avellana, field card no. 020; 27 06 2016, 3 leaf mines on C. avellana, field card no. 098; 07 08 2017, 6 leaf mines on C. avellana, field card no. 319; 20 10 2017, 7 leaf mines on C. avellana, field card no. 458; The Navickiškės Forest, 24 07 2016, 7 leaf mines on C. avellana, field card no. 137; 24 07 2016, 13 leaf mines on C. betulus, field card no. 139; 01 10 2016, 1 ♀, 24 leaf mines on C. betulus, field card no. 226; 01 10 2016, 7 leaf mines on C. avellana, field card no. 225; 09 09 2017, 11 leaf mines on C. betulus, field card no. 366; 09 09 2017, 15 leaf mines on C. avellana, field card no. 368; 20 10 2017, 4 leaf mines on C. avellana, field card no. 438; 20 10 2017, 3 leaf mines on C. betulus, field card no. 440; The Nevainionys Forest, 18 09 2015, 1 leaf mine on C. betulus, field card no. 034; 07 10 2017, 19 leaf mines on C. avellana, field card no. 428; The Panezdiliai Forest, 12 07 2017, 10 leaf mines on C. avellana, field card no. 287; 01 09 2017, 22 leaf mines on C. avellana, field card no. 358; 23 09 2017, 7 leaf mines on C. avellana, field card no. 396; The Paraistis Forest, 27 09 2015, 10 leaf mines on Carpinus betulus, field card no. 049; 04 10 2015, 1 leaf mine on C. avellana, field card no. 064; 09 09 2017, 3 leaf mines on C. avellana, field card no. 377; 09 09 2017, 4 leaf mines on C. betulus, field card no. 378. Stigmella betulicola (Stainton, 1856) (Fig. 8) The Dumblė Forest, 28 08 2016, 5 leaf mines on B. pendula, field card no. 163; Eišiškės, 17 07 2015, 1 leaf mine on Betula pendula, field card no. 010; The Paraistis Forest, 27 09 2015, 2 leaf mines on B. pubescens, field card no. 051. Stigmella alnetella (Stainton, 1856) (Figs. 10) The Panezdiliai Forest, 04 10 2015, 6 leaf mines on Alnus glutinosa, field card no. 071. Stigmella luteella (Stainton, 1857) (Fig. 12) Eišiškės, 26 09 2015, 2 leaf mines on Betula pendula, field card no. 043; 14 10 2016, 3 leaf mines on B. pendula, field card no. 238; The Nevainionys Forest, 18 09 2015, 1 leaf mine on B. pendula, field card no. 031; 16 10 2016, 1 ♂, 5 leaf mines on B. pendula, field card no. 244; The Paraistis Forest, 27 09 2015, 7 leaf mines on B. pendula, field card no. 045. Stigmella glutinosae (Stainton, 1858) (Fig. 14) The Panezdiliai Forest, 04 10 2015, 11 leaf mines on Alnus glutinosa, field card no. 070. Stigmella nivenburgensis (Preissecker, 1942) (Fig. 16) Eišiškės, 20 09 2015, 1 leaf mine on Salix fragilis, field card no. 037; 10 10 2015, 4 leaf mines on S. fragilis, field card no. 075; 14 10 2016, 3 leaf mines on S. fragilis, field card no. 236; 20 10 2017, 22 leaf mines on S. fragilis, field card no. 446; The Gornostajiškės Village, 20 09 2015, 2 leaf mines on S. fragilis, field card no. 053. Stigmella prunetorum (Stainton, 1855) (Fig. 15) Eišiškės, 09 07 2015, 4 leaf mines on Cerasus vulgaris, field card no. 003; 17 07 2015, 2 leaf mines on C. vulgaris, field card no. 007; 26 09 2015, 1 ♂, 1 leaf mine on Prunus sp., field card no. 044; 27 06 2016, 2 leaf mines on P. sp., field card no. 099; 27 06 2016, 6 leaf mines on C. vulgaris, field card no. 101; 28 06 2016, 34 leaf mines on C.