Description of a new species of the genus Tanna (Hemiptera: Cicadidae: Cicadini) from Xinjiang Uygur, China

Description of a new species of the genus Tanna (Hemiptera: Cicadidae: Cicadini) from Xinjiang Uygur, China

Journal of Asia-Pacific Entomology 17 (2014) 59–61 Contents lists available at ScienceDirect Journal of Asia-Pacific Entomology journal homepage: www...

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Journal of Asia-Pacific Entomology 17 (2014) 59–61

Contents lists available at ScienceDirect

Journal of Asia-Pacific Entomology journal homepage: www.elsevier.com/locate/jape

Description of a new species of the genus Tanna (Hemiptera: Cicadidae: Cicadini) from Xinjiang Uygur, China Young June Lee a,⁎, Zhongren Lei b a b

Department of Ecology and Evolutionary Biology, University of Connecticut, 75 North Eagleville Road, Storrs, CT 06269, USA Institute of Plant Protection, Chinese Academy of Agricultural Science, 2 West Yuanmingyuan Road, Beijing 100193, China

a r t i c l e

i n f o

Article history: Received 9 February 2013 Revised 4 September 2013 Accepted 7 October 2013 Keywords: Cicada Leptopsaltriina Tanna aquilonia Neotanna

a b s t r a c t A new species, Tanna aquilonia sp. nov., is described from Xinjiang Uygur, China, which is the northernmost locality ever recorded for the genus Tanna Distant, 1905. Fuscous patch on inner one-third of the timbal cover and the considerably bent uncus can distinguish this species from its congeners. A short discussion about the taxonomic status of Tanna and Neotanna Kato, 1927 as a junior synonym is provided. © 2013 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved.

Introduction The genus Tanna Distant, 1905 belongs to the subtribe Leptopsaltriina within the tribe Cicadini, according to Lee and Hill (2010), which currently includes 33 species from East Asia, Southeast Asia, and South Asia. A new species of Tanna from Xinjiang Uygur, China is described, which was collected by Kathy B.R. Hill and David Marshall (University of Connecticut, Storrs, USA) during their field trip to China in 2009, under the cooperation of the second author. The type locality of this new species is the northernmost locality ever recorded for Tanna and is in a high altitude area of 1467 m. Morphological measurements were made with a Mitutoyo vernier caliper in mm. Taxonomy Genus Tanna Distant, 1905 Tanna Distant, 1905: 61. Type species: Pomponia japonensis Distant, 1892. Neotanna Kato, 1927: 26–27. Type species: Tanna viridis Kato, 1925 (synonymized by Hayashi, 1978 and reconfirmed by Lee and Hayashi, 2004). Remarks. The genus Neotanna was erected by Kato (1927) for a part of the Tanna species which do not have tubercle-like projections on the male abdominal sternite IV. These authors have examined many specimens of Tanna and Neotanna species including Tanna viridis (type species of Neotanna). However, no good morphological characters

⁎ Corresponding author. Tel.: +1 860 336 9458; fax: +1 860 465 9730. E-mail address: [email protected] (Y.J. Lee).

could be found, which can separate Neotanna from Tanna, except for the absence of the tubercle-like projections on the sternite IV. Actually, the projections on the sternite IV vary in size depending on the species and are transitional (large–medium-sized–small–indistinct) and can be reduced to the full inexistence. The male genitalia and wing venation are also inseparable between the two groups. Accordingly, it is not reasonable to separate some species into Neotanna only for this unstable character, and thus Neotanna should be treated as a junior synonym of Tanna.

Tanna aquilonia sp. nov. (Figs. 1, 2) Type material. Holotype (Fig. 1): male, CHINA, Xinjiang Uygur District, road into Tian Mountain Range, south of Manasi, lower foothills area, 1467 m, 43°51.729′N 86°10.556′E, 31 VII 2009, K.B.R. Hill, D. Marshall, J. Xiang, H. Xiao (09.CN.ZJ.TAN.02). Holotype will be deposited in the Museum of Chinese Plant Protection, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing. Etymology. The specific name is the Latin feminine adjective meaning “northern” in reference to the type locality which is the northernmost locality ever recorded for Tanna. Measurements of type (1 male). Median length of body: 39.0. Median length of head and thorax together: 15.0. Median length of abdomen: 24.0. Width of head including eyes: 9.4. Width of mesonotum: 9.7. Width of abdominal tergite 3: 12.1. Length of fore wing: 43.1. Width of fore wing: 14.3. Wing span: 95.4. Diagnosis. Body about 39.0 mm long. Head slightly narrower than mesonotum. Ratio of length to width of fore wing about 3.00. Fore wing longitudinal portion of radius anterior 2 vein about 1.5 times as long as basal portion of radius anterior 2 vein. Fore wing basal cell scarcely

1226-8615/$ – see front matter © 2013 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.aspen.2013.10.003

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Fig. 1. Tanna aquilonia sp. nov., holotype, male, Xinjiang Uygur, China. (A) Dorsal habitus. (B) Ventral habitus. (C) Head and thorax in dorsal view. (D) Opercula and a part of abdominal sternites.

tinged. Male operculum distinctly longer than wide. Male abdomen smoky ochraceous to brown, but neither reddish nor castaneous. Male abdominal tergite 3 wider than mesonotum, with ratio of about 1.25. Male abdominal tergite 8 scarcely covered with tiny white hairs but without white pollinosity. Timbal cover with fuscous patch on its inner one-third. Male abdominal sternite III with a pair of tubercle-like projections protruding laterally, ochraceous without fuscous patch on apices. Male abdominal sternite IV with a pair of tubercle-like projections, ochraceous. Uncus considerably bent inward in lateral view. Description of male (Figs. 1, 2). Head green to greenish ochraceous with the following black marks: median mark enclosing ocelli, with its anterior part upside down triangular enclosing median ocellus in lower angle, not reaching frontoclypeal suture anteriorly and with lateral angles each diverging into two narrow fasciae, of which anterior one extending

Fig. 2. Tanna aquilonia sp. nov., holotype, male, Xinjiang Uygur, China. (A) Ventral view of the male pygofer. (B) Lateral view of the male pygofer.

onto supra-antennal plates and expanding there to cover most of supraantennal plate and posterior one extended posteriad longitudinally; a pair of curved fasciae on lateral sides of the median mark; fascia along posterior margin of head; a pair of curved fasciae along eyes. Distance between lateral ocelli and eyes about as wide as twice distance between lateral ocelli. Antennae brown to dark brown. Postclypeus green with transverse grooves infuscated medially on about anterior two-thirds and with transverse yellow fasciae between grooves. Anteclypeus green with fuscous lateral margins and a pair of curved longitudinal submedian fuscous fasciae. Lorum ochraceous with large fuscous spot on inner margin. Rostrum ochraceous but fuscous on apex; reaching posterior margin of hind coxae. Gena green with rather indistinct small medial fuscous spot between postclypeus and eye. Thorax (Fig. 1C): inner area of pronotum brown except for median longitudinal thick green fascia and ochraceous anterolateral corners, with the following black to fuscous marks: a pair of median longitudinal fasciae on lateral margins of the median longitudinal green fascia, broadened at both anterior and posterior ends; circular narrow fascia along margin of brown part. Pronotal collar green to yellowish green with narrow transverse black fascia along posterior margin and two pairs of dark brown spots at lateral inner corners. Anterolateral pronotal collar not dentate. Mesonotum green to yellowish green with the following black to fuscous marks: long longitudinal median fascia extending posteriad to reach anterior margin of cruciform elevation, with its posterior part extending laterad to enclose scutal depressions, and then curved anteriad with triangular apex; a pair of inwardly curved fasciae along inner side of parapsidal sutures, with their apex roundly expanded; a pair of small spots on anterior margin of lateral sigilla; a pair of thick longitudinal fasciae posterior to the small spots on lateral sigilla, with their posterior ends bent laterad to reach posterolateral margin of mesonotum; a pair of slender triangular mark between the fasciae along inner side of parapsidal sutures and the small spots on anterior margin of lateral sigilla, touching anterior margin of mesonotum. Cruciform elevation green with fuscous tips on arms. Thoracic sternites

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green to yellowish green with fuscous meron 2. Legs green to yellowish green. Fore-femur with brown primary spine and black secondary and subapical spines. Fore-tibia brown but narrowly fuscous proximally. Fore-tarsus brown but widely fuscous distally. Mid-tibia green but widely brown distally. Mid-tarsus ochraceous but widely fuscous distally. Hind-tibia ochraceous. Wings (Fig. 1A) hyaline tinged with green. Fore wing venation reddish orange basally but irregularly fuscous, green, or reddish orange. Radius green basally. Subcostal vein reddish orange basally. Fore wing with infuscations on radial, radio-medial, medial, and mediocubital crossveins and base of median 1 vein. Roundish infuscation present on each hind margin of radius anterior 2, radius posterior, median 1–4, and cubitus anterior 1 and 2 veins. Basal cell scarcely tinged. Basal membrane and hind wing jugum gray. Operculum (Fig. 1D) upside-down triangular with inner margin deeply concave at basal half and with rounded apex, extending slightly beyond posterior margin of sternite II; pale yellowish green with lateral margin narrowly fuscous except for apical part. Opercula widely separated, with gap about as wide as operculum. Abdomen cylindrical, much longer than head and thorax together; smoky ochraceous to brown with posterior margin of each tergite narrowly fuscous. Tergite 8 scarcely covered with tiny white hairs but without white pollinosity. Timbal cover (Fig. 1C) triangular with apex widely rounded; grayish ochraceous with fuscous patch on its inner one-third. Timbal concealed with timbal cover in dorsal view. Abdominal sternites ochraceous. Sternite III (Fig. 1D) with a pair of tubercle-like projections protruding laterad on each lateral surface, entirely ochraceous. Sternite IV (Fig. 1D) with a pair of much smaller tubercle-like projections on each lateral surface, entirely ochraceous. Male genitalia (Fig. 2): pygofer elliptical in ventral view. Uncal lobe simple, short, not bifurcate, gradually narrowed toward apex, with apex widely truncate in ventral view; bent inward nearly in 90° in lateral view. Aedeagus thick, about as wide as uncus apex, protruding out of uncus. Distal shoulder roundish. Dorsal beak short, obtusely triangular. Basal lobe absent.

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Remarks. Among the characters listed in diagnosis above, especially the fuscous patch on inner one-third of the timbal cover and the considerably bent (scarcely or slightly curved in other species) uncus can distinguish this species from its congeners. Tanna is a notorious genus for the extreme difficulty in species identification because of the similarity in morphological features among congeners. It is often experienced that no morphological evidence can be found among distinct species having their own distinct calling songs. However, this new species has a few but good characters enough to distinguish it from its congeners. Acknowledgments The authors are indebted to Kathy B.R. Hill and David C. Marshall for their field trip to China in 2009 to collect the cicada specimen studied in this paper and also to Chris Simon for her initiation and support for the field trip. This work benefited from support from the University of Connecticut and the National Science Foundation under Grant Number NSF DEB-09-55849. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. References Distant, W.L., 1905. Rhynchotal notes—XXIX. Ann. Mag. Nat. Hist. 15, 58–70. Hayashi, M., 1978. The Cicadidae (Homoptera, Auchenorrhyncha) from East and Central Nepal (part I). Bull. Nat. Sci. Mus. Ser. A (Zool.) 4, 163–195. Kato, M., 1927. A catalogue of Japanese Cicadidae, with descriptions of new genus, species and others. Trans. Nat. Hist. Soc. Formosa 17, 19–41 (In Japanese with English descriptions). Lee, Y.J., Hayashi, M., 2004. Taxonomic review of Cicadidae (Hemiptera, Auchenorrhyncha) from Taiwan, part 3. Dundubiini (two other genera of Cicadina), Moganiini, and Huechysini with a new genus and two new species. J. Asia Pac. Entomol. 7, 45–72. Lee, Y.J., Hill, K.B.R., 2010. Systematic revision of the genus Psithyristria Stål (Hemiptera: Cicadidae) with seven new species and a molecular phylogeny of the genus and higher taxa. Syst. Entomol. 35, 277–305.