Cyana Pseudojavanica Sp. Nov. from Thailand and Cambodia (Lepidoptera: Erebidae: Arctiinae)
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Ecologica Montenegrina 31: 6-9 (2020) This journal is available online at: www.biotaxa.org/em http://dx.doi.org/10.37828/em.2020.31.2 https://zoobank.org/urn:lsid:zoobank.org:pub:665E8674-ABFF-457A-A923-4F6B5D728718 Cyana pseudojavanica sp. nov. from Thailand and Cambodia (Lepidoptera: Erebidae: Arctiinae) VITALY M. SPITSYN* N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russia *Corresponding author: [email protected] Received: 1 April 2020│ Accepted by V. Pešić: 27 March 2020 │ Published online: 1 May 2020. Here Cyana pseudojavanica sp. nov. is described from Thailand and Cambodia. This species was previously incorrectly identified as Cyana javanica (Butler, 1877) (Bayarsaikhan & Bae 2016). However, the latter species is known only from Indonesia (Java, Sumatra, Borneo, and Flores), and it has significant differences in the male genitalia structure (compare Roepke 1946 and Fig 2). This study is based on the material from the collection of the Russian Museum of Biodiversity Hotspots (RMBH), N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Arkhangelsk, Russia. The genitalia were dissected, mounted on temporary glass slides with 70% ethanol, and photographed using a research stereomicroscope (AXIO Zoom.V16, Carl Zeiss, Germany). The genitalia are kept in a micro-tube with glycerin pinned to the specimens. The images of the specimens were taken with a Canon EOS 80D camera (Canon Inc., Tokyo, Japan). Taxonomy Family Erebidae Leach, [1815] Subfamily Arctiinae Leach, [1815] Tribe Lithosiini Billberg, 1820 Genus Cyana Walker, 1854 Type species: Cyana detrita Walker, 1854 (by monotypy) Cyana pseudojavanica sp. nov. Figs 1-2 https://zoobank.org/urn:lsid:zoobank.org:act:92E4DAE9-3EE4-45BF-A29B-EB87CA124A93 Type material. Holotype male: THAILAND, Mae Hong Son Province, Cave Lodge, Mountain monsoon forest in the river valley, 19°34.320’N, 98°16.847’E, 30.v–19.vi.2016, V. Spitsyn leg. (RMBH Sph0848). Ecologica Montenegrina, 31, 2020, 6-9 SPITSYN Figure 1. Cyana spp.: A) Holotype male of C. pseudojavanica sp. nov., Thailand; B) male of C. javanica, Flores Island, Indonesia. Scale bar = 5 mm. Photos: Vitaly M. Spitsyn. Diagnosis. The novel species is morphologically similar to Cyana javanica (Butler, 1877) and Cyana conclusa (Walker, 1862), but can be distinguished from those taxa by a broad distal section of the valva (vs narrow and long distal section of the valva in C. javanica) and by the lack of a cluster of spines in the aedeagus vesica (vs the presence of such cluster in C. conclusa). Ecologica Montenegrina, 31, 2020, 6-9 7 CYANA PSEUDOJAVANICA SP. NOV. FROM THAILAND AND CAMBODIA Figure 2. Male genitalia and aedeagus of Cyana spp.: A-B) Holotype of C. pseudojavanica sp. nov., Thailand; C-D) C. javanica, Flores Island, Indonesia. Photos: Vitaly M. Spitsyn. Description. Male morphology: Wingspan 36 mm, forewing length 18 mm. Eye gray. Antenna brown. Head white. Labial palpus short, brown. Thorax white. Patagium, and tegula white, with pink apex. Legs white with pink spots. Forewing upperside white; basal, antemedial and postmedial lines red; outer margin orange; apex of the central cell with two black spots. A line of androconial scales is located along the costal margin. Hindwings pink. Underside of forewings white, hindwings light pink. Abdomen pink. Male genitalia: Uncus long; tegumen long, u-shaped; saccus broad. Valva long, distal section of valva broad; the ampulla is long, wide and curved; distal saccular process long, curved. Aedeagus straight, without a cluster of spines in vesica. Distribution. Thailand and Cambodia (Bayarsaikhan & Bae 2016). Acknowledgements This study was partly supported by the Russian Ministry of Science and Higher Education (project No. АААА-А17-117033010132-2) and the Russian Foundation for Basic Research, RFBR (project No. 19-34- 90012). 8 SPITSYN References Bayarsaikhan, U. & Bae, Y. S. (2016) A review of the genus Cyana Walker, 1854 (Lepidoptera, Erebidae, Arctiinae) from Cambodia, with description of new species. Zootaxa, 4114(4), 447–463. http://doi.org/10.11646/zootaxa.4114.4.5 Roepke, W. (1946) Revisional notes on the genus Cyana Wlk. (Lep.: Lithosiidae). Tijdschrift voor Entomologie, 87, 26–36. Ecologica Montenegrina, 31, 2020, 6-9 9 .