The Tortricidae (Lepidoptera) of Bhutan
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Zootaxa 4658 (3): 526–540 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2019 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4658.3.5 http://zoobank.org/urn:lsid:zoobank.org:pub:664EEF6E-ABD3-4DFB-B0B8-12AC082FE0E0 The Tortricidae (Lepidoptera) of Bhutan FRANS GROENEN1 & KARMA WANGDI2 1Kastanjedreef 7, 5571 AE Bergeijk, The Netherlands. E-mail: [email protected] 2Ugyen Wangchuck Institute for Conservation and Environment, Lamai Goempa Dzong, P.O. Box 155, Bumthang, Bhutan Abstract Twenty-five species of Tortricidae from Bhutan are discussed, 14 of which are recorded for the first time: Acleris perfundana Kuznetsov, 1962, Archips limatus Razowski, 1977, Chirapsina expleta (Meyrick, 1923), Clepsis humana (Meyrick, 1912), Adoxophyes privatana (Walker, 1863), Lumaria probolias (Meyrick, 1907), Meridemis bathymorpha Diakonoff, 1976, Isodemis illiberalis Meyrick, 1918, Lobesia ambigua Diakonoff, 1954, Metendothenia ordospina Jirasuttayaporn & Pinkeaw, 2018, Gibberifera glaciata (Meyrick, 1907), Crocidosema plebejana Zeller, 1847, Lepteucosma charassuncus Razowski, 2006, and Microsarotis bicincta Diakonoff, 1976. Females of Chirapsina expleta and Epiblema charadrias Diakonoff, 1977 are described and illustrated for the first time. Nine new species are described: Eupoecilia jakarana, sp. nov., E. gedui, sp. nov., Lumaria phuntschona, sp. nov., Borneogena trashiyana, sp. nov., Bactra cophinana, sp. nov., Penthostola subnigrantis, sp. nov., M. brunnofasciana, sp. nov., Peridaedala nigrifasciana, sp. nov., and Epiblema albulusana, sp. nov. Adults and their genitalia are illustrated. Key words: Palaearctic, Oriental, new species, new records Introduction The Tortricidae fauna of Bhutan is poorly known, with Diakonoff (1977) the only contribution that specifically deals with the family in Bhutan. Based on material collected by the Bhutan expedition of the Basel Museum, he listed six species: Archips termias (Meyrick, 1918), Clepsis rurinana (Linnaeus, 1758), Neocalyptis tricensa (Meyrick, 1912), Epiblema charadrias Diakonoff, 1977, Notocelia zelota (Meyrick, 1916), and Gibberifera simplana (Fischer von Röslerstamm, 1835). Two others were previously described from Bhutan: Archips dispilana (Walker, 1864) and Ulodemis trigrapha Meyrick, 1907. Diakonoff (1941, 1964a, b, 1973, 1976, 1982, 1983, 1984), Meyrick (1907a, b, 1908, 1909, 1912a, b, c, 1914, 1916a, b, 1920, 1921, 1922a, b, 1925, 1927, 1928a, b, 1930, 1931a, b, 1932, 1933, 1934, 1935, 1936, 1937, 1939), Caradja & Meyrick (1937), and Razowski (1968, 1977, 1979, 2006, 2008, 2009, 2012, 2015) described numerous species from India, Nepal, and China, so considerably more information is avail- able from neighbouring countries. In 2016 a small entomological expedition was organized with the goal of collecting moths in Bhutan. This was a joint effort of the National Biodiversity Centre, Serbithang (NBCS), Ugyen Wangchuck Institute for Conservation and Environment (Bumthang), and Naturalis Biodiversity Center, the Netherlands (NBCL). During the field work, 59 specimens of Tortricidae were collected by Cees Gielis and the second author. The material, belonging to the tribes Cochylini, Tortricini, Archipini, Bactrini, Eucosmini, Olethreutini, and Grapholitini, consists of 20 genera and 25 species. A study of that material by the first author is presented here. Together with the six species previously recorded from Bhutan, the total number of Tortricidae species documented from the country is 31. Material and methods Moths, including Totricidae, were collected with light traps at numerous locations ranging from 200−500 elevation in the southern part and up to 4000 m in the northern part of the country. Insects were stored in paper bags and dried 526 Accepted by J.W. Brown: 24 May 2019; published: 23 Aug. 2019 for shipping. Subsequently the specimens were relaxed, pinned, and prepared. The genitalia of all species were dissected and mounted on glass slides in Euparal. Photographs of moths were taken with a Nikon D300 camera with a Zeiss Luminar 100 mm lens. Illumination was in a light-box with a full-spectrum tube light. Photographs of genitalia were taken with an Olympus trioculair microscope and a MDC320 digital camera. Forewing length was measured from the wing base to the outermost edge of fringe scales at the apex. Nomen- clature and classification follow the online world catalogue of the Tortricidae (Ver. 3.0). (Gilligan et al. 2014). Holotypes are deposited in the collection of NBC (Serbithang) in Bhutan. The other material is on permanent loan to NBCL. Results Cochylini Eupoecilia jakarana, sp. nov. Figs. 1‒2, 33‒34 Holotype. ♂, Bhutan, Bumthang, 1 km NE Jakar, 27º32´39´´N, 90º43´22´´E, 2910 m, 1, 15.viii.2016, sta. 22, C. Gielis, genitalia slide FG3321 (NBCS). Paratype (1♂). Same data as holotype, except 16.viii.2016, sta. 24 (NBCL). Diagnosis. Eupeocilia jakarana is a large species closely related to E. crocina Razowski, 1968, distributed in the western part of the Himalaya, and E. cracens Diakonoff, 1982 from Sri Lanka. Externally, it is very similar to E. ambiguella (Hübner, 1796), but it has a greater forewing length. The genitalia are similar to those of E. crocina but can be distinguished by the following features: socii slenderer, top of the transtilla concave, and cornutus stronger. Description. Male. Head (Fig. 1‒2): Frons white, vertex cream, labial palpus 2 times diameter of compound eye, cream, third segment white. Thorax: Notum cream. Legs whitish, tarsi of hind legs black with whitish bands. Forewing length 9 mm; broadening terminad, costa slightly sinuate, termen oblique, dorsum straight, ground col- our cream; median fascia at costa from ¼ to ⅓, tapering halfway to dorsum, outer margins irregular, black-brown, apical half with scattered brown to black-brown dots, a small trianglular black dot at dorsum. Fringe concolourous with apical part of wing. Hindwing dirty white towards apex with scattered black brown dots, fringe concolourous. Abdomen: Genitalia (Fig. 33‒34) with socii long, slender, rounded dorsally; transtilla subtriangular, top concave dorsally, with some thorns. Phallus short, broad, vesica with many spines, one strong, straight, cornutus ca. one-half length of phallus. Female unknown. Distribution. Bhutan. Etymology. The specific epithet refers to type locality of Jakar. Eupoecilia gedui, sp. nov. Figs. 3, 35‒36 Holotype. ♂, Bhutan, Chhukha, Gedu 26º55´14´´N, 89º31´17´´E, 2032 m, 5.viii.2016, sta. 8, C. Gielis, genitalia slide FG3311 (NBCS). Diagnosis. Epoecilia gedui is a median sized species with a black-brown triangular spot at the costa. It is similar to E. ambiguella but can be distinguished by the following features of the ale genitalia: the shape of the triangular patch at the costa of the forewing , the rounded top of the transtilla, and the stronger and broader cornutus of the phallus. Description. Male. Head (Fig. 3): Frons and vertex cream, labial palpus cream, length of labial palpus 1.5 times diameter of compound eye. Thorax: Notum and tegulae yellow to cream. Forewing length 5 mm, costa parallel to dorsum, slightly sinuate, ground-colour cream; base of costa with two brown spots, median fascia indicated by a triangular patch from costa from ¼ to ⅔, reaching to base of cell; apical area of wing with scattered brownish dots, triangular brown dot at apex, dorsum with very small black brown dots. Fringe concolourous with ground colour. Hindwing cream, veins darker, fringe concolourous with hindwing. Abdomen: Genitalia (Fig. 35‒36) with socius long, slender, with curved, sharp pointed top; transtilla long, broad, convex apically, top short, medially incised, THE Tortricidae (LEPIDOPTERA) OF BHutan Zootaxa 4658 (3) © 2019 Magnolia Press · 527 thorns laterad of incision; valva broad, triangular, costa convex, top of cucullus hairy, sacculus very slender, about same length as costa, apical end with short spines. Phallus broad, vesica with one straight cornutus ca. one-half as long as phallus and many spines, distally with many thorns. Female unknown. Distribution. Bhutan. Etymology. The species is named after the collecting area Gedu. Tortricini Acleris perfundana Kuznetsov, 1962 Figs. 4, 55 Specimen examined (1♀). Bhutan, Yangtse,Trashi Yangtse, 27º36´49´´N, 91º29´34´´E, 1760 m, 18.viii.2016, sta. 27, C. Gielis, genitalia slide FG3331. Distribution. China, Russia, Korean Peninsula, Japan, Bhutan. Remarks. This species is newly recorded for Bhutan. Larva feed on Quercus mongolica, Zelkova serrata and Z. schneideriana (Razowski 2008) Archipini Epagoge species Figs. 5, 56 Specimen examined (1♀). Bhutan, Wangdue Phodrang, Phobjikha, 27º27´55´´N, 90º10´11´´E, 2890 m, 13.viii.2016, sta. 20, C. Gielis, genitalia slide FG3308 (NBCS). Remarks. Externally, this species is similar to several other species of Epagoge for which only males are known. Archips limatus Razowski, 1977 Figs. 6‒8, 37‒38, 57‒58 Specimens examined (3♂, 5♀). Bhutan, Haa, Haa 27º21´41´´N, 89º17´55´´E, 2700 m, 6.viii.2016, sta. 10, C. Gielis, ♂ genitalia slide FG3286, ♀ genitalia slide FG3287. Yangtse, Trashi Yangtse, 27º36´’49´´N, 91º29´34´´E, 1760 m, 18.viii.2016, sta 27, C. Gielis, ♂ genitalia slide FG3292. Wangdue Phodrang, Phobjikha, 27º27´55´´N, 90º10´11´´E, 2890 m, 14.viii.2016, sta. 21, C. Gielis, ♂ genitalia slide FG3296, ♀ genitalia slide FG3289, 13.viii.2016, sta. 20, C. Gielis. Bumthang, 1 km NE Jakar, 27º32´39´´N, 90º43´22´´E, 2910 m, 16.viii.2016, sta. 24, C. Gielis, ♂ genitalia slide FG3298.