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Coleoptera: Chrysomelidae: Eumolpinae

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Coleoptera: Chrysomelidae: Eumolpinae ZOOSYSTEMATICA ROSSICA, 25(2): 299–313 27 DECEMBER 2016 To the knowledge of the leaf-beetle genera Rhyparida and Tricliona (Coleoptera: Chrysomelidae: Eumolpinae) from Indochina and Malay Peninsula К познанию жуков-листоедов родов Rhyparida и Tricliona (Coleoptera: Chrysomelidae: Eumolpinae) Индокитая и Малайского полуострова P. V. R OMANTSOV & A.G. MOSEYKO* П.В. РОМАНЦОВ, А.Г. МОСЕЙКО P.V. Romantsov, 105-9 Krasnoputilovskaya Str, St Petersburg 196240, Russia. E-mail: [email protected] A.G. Moseyko, Zoological Institute, Russian Academy of Sciences, 1 Universitetskaya Emb., St Petersburg 199034, Russia; All-Russian Institute of Plant Protection, 3 Podbelskogo St, St Petersburg – Pushkin 196608, Russia. E-mail: [email protected] Four species (Rhyparida spiridonovi sp. nov. from Penang Island and Singapore, Tricliona tri- maculata sp. nov. from Penang Island and Malay Peninsula, T. suratthanica sp. nov. and T. tran- gica sp. nov. from Thailand) are described. A key to the species of the genus Tricliona from In- dochina and Malay Peninsula is given. Rhyparida faitsilongi nom. nov. is the new replacement name for Rhyparida megalops (Chen, 1935), comb. n., transferred from the genus Tricliona; Tricliona tonkinensis (Lefèvre, 1893), comb. nov. and Tricliona episternalis (Weise, 1922), comb. nov. transferred from the genera Phytorus and Rhyparida, accordingly. Lectotypes of Rhyparida episternalis Weise, 1922 and Phytorus tonkinensis Lefèvre, 1893 are designated. Описаны четыре новых для науки вида (Rhyparida spiridonovi sp. nov. с о. Пенанг и Син- гапура, Tricliona trimaculata sp. nov. с о. Пенанг и Малайского полуострова, T. suratthanica sp. nov. и T. trangica sp. nov. из Таиланда). Составлена определительная таблица для рода Tricliona Индокитая и Малайского полуострова. Rhyparida faitsilongi nom. nov. – новое название для Rhyparida megalops (Chen, 1935), comb. nov., который перенесен из рода Tricliona; Tricliona tonkinensis (Lefèvre, 1893), comb. n. и Tricliona episternalis (Weise, 1922), comb. nov. перенесены соответственно из родов Phytorus и Rhyparida. Выделены лекто- типы Rhyparida episternalis Weise, 1922 и Phytorus tonkinensis Lefèvre, 1893. Key words: leaf beetles, Indochina, Malay Peninsula, Malaysia, Thailand, key, Chrysomelidae, Eumolpinae, Rhyparida, Tricliona, new species Ключевые слова: жуки-листоеды, Индокитай, Малайский полуостров, Малайзия, Таи- ланд, определительная таблица, Chrysomelidae, Eumolpinae, Rhyparida, Tricliona, новые виды INTRODUCTION 1985; Medvedev, 2000, 2001, 2009, 2013; Medvedev & Moseyko, 2003; Mohamed- A fauna of the subfamily Eumolpinae said, 2004; Moseyko, 2011, 2014 etc.) but of Indo-Malayan Region has been studied almost all genera are still need to be re- è for a long time (Lef vre, 1885, 1904; Chen, vised. Both genera, Rhyparida Baly, 1861 1935; Kimoto & Gressitt, 1982; Kimoto, and Tricliona Lefèvre, 1885, considering in this paper, were never revised with exami- *Corresponding author. nation of a type material. Rhyparida from © 2016 Zoological Institute, Russian Academy of Scienсes 300 P.V. ROMANTSOV & A.G. MOSEYKO. LEAF-BEETLE GENERA RHYPARIDA AND TRICLIONA continental Asia is studied a little bit better of the beetles were taken with a Canon and was recently keyed (Medvedev, 2009) EOS 500D digital camera combined with whereas Tricliona was never keyed using the Canon EF 70–200 mm f/4.0L IS USM and characters of genitalia. This paper is aimed inverted Нelios 50 mm objectives. Pho- to compile a key to the genus Tricliona from tographs of aedeagi and some spermathe- Indochina and Malay Peninsula and de- cae were made with a Canon EOS 500D scribe a new Rhyparida species and three digital camera combined with Canon EF new Tricliona species. 70–200 mm f/4.0L IS USM and inverted EFS 18–55 mm f/3.5–5.6 objectives. Origi- MATERIAL AND METHODS nal images were stacked using Helicon Fo- cus 4.60.3 Pro software. Photographs of a The following abbreviations are used for few spermathecae were made with Leica the depositories of the specimens examined: DFC-290 camera mounted on the micro- HMNH – Hungarian Museum of Natural scope Leica DME. History, Budapest, Hungary; IRSNB – In- Using of some terms. The term ‘propleu- stitut Royal des Sciences Naturelles de Bel- ron’/‘propleura’ means the fore edge of lat- gique, Bruxelles, Belgium; LM – Lev Med- eral arms of prosternum. True propleura vedev’s private collection, Moscow, Russia; are absent in Chrysomelidae, but this term é MNHN – Mus um National d’Histoire Na- was common in old literature on Eumolpi- turelle, Paris, France; NHRM – Naturhis- nae and obvious for the specialists. The full toriska Riksmuseet, Stockholm, Swe- number of elytral puncture rows in the tribe den; NMEG – Naturkundemuseum Erfurt, Typophorini is 13 (Moseyko, 2011). But Germany; PR – Pavel Romantsov’s private in some cases some rows can be reduced or collection, St Petersburg, Russia; USNM – fused, and punctuation seems like 12-rowed. National Museum of Natural History, In these cases we anyway use numeration Smithsonian Institution, Washington, USA; as in 13-rowed elytra because fused rows ZIN – Zoological Institute, Russian Acad- are irregular and can be easily recognized emy of Sciences, St Petersburg, Russia. whereas uniform terminology makes com- Pavel Romantsov’s material was collect- parisons more suitable. ed in Malaysia and Thailand in 2014–2015. Labeling. Exact text of the labels is cited Meromictic Lake in National Park of Pen- in quotes (‘…’) for the type material and ang Island (Fig. 13) in Malaysia is of par- partly for other specimens. A slash (/) sepa- ticular interest. This temporary lake exists rates different lines on the same label. during six months per year only and has two immiscible layers of the water: warm TAXONOMY salt water from the sea and cold fresh water from streams. Exploring the bushes on the Order COLEOPTERA lakeside (Lumnitzera sp., of the family Com- bretaceae, Fig. 13–15), two new species of Family CHRYSOMELIDAE the genera Tricliona and Rhyparida were Subfamily EUMOLPINAE collected. Curiously that both species are very similar to each other in body shape and The genera Rhyparida Baly, 1861 and general appearance (Figs 1, 10). In Thai- Tricliona Lefèvre, 1885 belong to the tribe land the material was collected in environs Typophorini Baly, 1861. Both they have of Khao Sok National Park which contains bifid claws and differs by two formal char- well preserved evergreen rainforest. acters: convex ‘propleura’ and large tooth Measurements were made using an on fore femora in Tricliona compared to ocular grid mounted on MBS-20 or straight or concave ‘propleura’ and small or MBS-10 stereomicroscopes. Photographs missing tooth on fore femora in Rhyparida. © 2016 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 25(2): 299–313 P.V. ROMANTSOV & A.G. MOSEYKO. LEAF-BEETLE GENERA RHYPARIDA AND TRICLIONA 301 Both used characters are gradually variable small carina in the middle, punctures at up- in different species, the genera seems to be per part of head form a triangle broad on artificial and system of the tribe needs of vertex and converging between the eyes, hard revision. However, in most cases these while area along the margins of the eyes genera can be easily separated. Tricliona is convex and impunctate. Ocular grooves Indo-Malayan genera containing about 70 absent. Antennae filiform, reaching hume- species, whereas Rhyparida occurs in both ral tubercles, proportions of segments are Australian and Indo-Malayan regions and as 10–6–7–8–10–10–12–11–10–10–12 contains about 500 species. (scales: 1: 0.25 mm), segments one and two slightly curved, segments three and four cy- Genus Rhyparida Baly, 1861 lindrical, last seven segments slightly thik- kened apically. Prothorax moderately con- Rhyparida spiridonovi sp. nov. vex, 1.35 times as wide as long with roun- (Figs 1, 16, 17, 26) ded sides, and slightly convex posterior and Holotype. Male, ‘MALAYSIA, NW N Penang straight anterior margins. Punctation deep Island, / near Teluk Bahang vill., National Park, / medially and coarse on sides, irregular, in- Meromictic lake, 05°27´8´´N, 100°11´4´´E, tervals between punctures as wide as 1–3 h~15m, / 19. II.2014 P. Romantsov leg.’ (ZIN). diameter of puncture. Anterior angles ob- Paratypes. 3 males, 3 females, same data tuse, posterior angles blunt, slightly promi- as holotype (PR, 1 male and 1 female in ZIN); nent, each bears single long seta. Anterior 1 male, 2 females, ‘Island of/ Penang/ Baker’ margin unbordered, lateral and posterior (USNM, 1 female in ZIN); 1 female, ‘Coll. I.R.Sc.N.B. / SINGAPORE Sungei / Buloh Mal margins bordered. Anterior margin of pro- Trap 1 / Station 25272/ 27-VII-05 swamp for- episterna (anterior margin of lateral arms of est/ Leg P. Grootaert’ (IRSNB). prosternum) straight; propleurae (pronotal Description. Dorsal side fulvous, seven hypomera) seldom but distinctly punctate. last antennal segments slightly darkened at Scutellum conical with rounded apex, im- the apex, pronotum with a transverse row punctate. Elytra parallel-sided with well of four blurred black spots and narrowly developed humeral calli and without basal darkened anterior and posterior margins; elytral convexity, 1.5 times as long as wide, elytral pattern consists of several irregu- with twelve (1–8, mixed and reduced 9–10 lar black spots occasionally merging into and well developed 11–13 ones) regular longitudinal strips (Fig. 1). Ventral side rows of punctures distinct throughout the fulvous to brown with blackened propleu- length, interspaces
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