A New Species of the Genus Taridius from China (Coleoptera: Carabidae: Lebiini) Новый Вид Рода Taridius Из Китая (Coleoptera: Carabidae: Lebiini)

ZOOSYSTEMATICA ROSSICA, 23(1): 106–110 25 JUNE 2014

A new species of the genus Taridius from China (Coleoptera: Carabidae: Lebiini) Новый вид рода Taridius из Китая (Coleoptera: Carabidae: Lebiini)

I.I. KABAK* & D.W. WRASE

И.И. КАБАК, Д.В. ВРАЗЕ

I.I. Kabak, All-Russian Institute of Plant Protection, 3 Podbelsky Highway, St Petersburg – Pushkin 189620, Russia. E-mail: [email protected]. *Corresponding author. D.W. Wrase, 78 Dunckerstrasse, Berlin D-10437, Germany. E-mail: [email protected]

A new species of the genus Taridius Chaudoir, 1875, T. yunnanus sp. nov. is described from the vicinity of Erhai Lake not far from Dali City, Yunnan (China). Описан новый вид рода Taridius Chaudoir, 1875 – T. yunnanus sp. nov. из окрестностей озера Эрхай недалеко от города Дали, провинция Юннань (Китай). Key words: ground beetles, taxonomy, China, Yunnan, Coleoptera, Carabidae, Lebiini, Taridi- us, new species Ключевые слова: жужелицы, таксономия, Китай, Юннань, Coleoptera, Carabidae, Lebi- ini, Taridius, новый вид

INTRODUCTION tra at their widest part; pronotal base at its hind angles; length of antennae from base of This paper contains the description of scape to tip of ultimate segment; length of a new species of the genus Taridius Chau- eye in dorsal view. Ranges of measurements doir, 1875 collected during an expedition, and ratios are followed by averages in pa- recently undertaken in the mountains of rentheses. Yunnan. Microsculpture was examined at a magnification of 56× with using of tracing paper MATERIAL AND METHODS for light dispersion. Dissections were made with standard techniques; genitalia are pre- Holotype and one paratype are pre- served in Euparal on carton boards, and served in the collection of D.W. Wrase pinned beneath the specimens. Line draw- (Berlin); other paratypes are kept in the ings were prepared by using an ocular grid Zoological Institute of the Russian Acad- (10×10 squares) attached to a MBS-10 ste- emy of Sciences (St Petersburg), and in reobinocular microscope. The habitus pho- the collection of I. Belousov and I. Kabak tograph was made using a DSLR camera (St Petersburg). Canon EOS 40D with Canon 70-200 4L as Measurements were taken as follows: base lens and Jupiter 135 as reverse lens. To body length from anterior margin of labrum achieve sufficient depth of focus, 30 planes to elytral apex; head width across eyes; pro- were captured which were combined with notal length along its median line; elytral the stacking program Zerene Stacker. Post- length from tip of scutellum to sutural angle processing was done in Adobe Photoshop of elytra; width of both pronotum and ely- CS 6. Measurements were made using an

© 2014 Zoological Institute, Russian Academy of Scienсes I.I. KABAK & D.W. WRASE. NEW SPECIES OF TARIDIUS FROM CHINA 107 ocular micrometer in a MBS-10 stereobin- ocular microscope at a magnification of 16×. Under the “Material” section, the number of genitalia preparations in parentheses follows the number of specimens studied. The following abbreviations are used: AL, length of antennae; EL, length of elytra; EW, width of elytra; EyL, length of eye in dorsal view; HW, width of head across eyes; 3AL, length of antennomere 3; PB, width of pronotum at base; PL, length of pronotum; PW, maximum width of pronotum.

SYSTEMATIC PART

Order COLEOPTERA Family CARABIDAE Subfamily LEBIINAE Tribe LEBIINI Genus Taridius Chaudoir, 1875 Taridius yunnanus sp. nov. (Figs 1–4)

Holotype. Male; China, Yunnan, “Dali Bai Auton. Pref., mountain range N Er Hai [Erhai Lake], 42 km N Dali [City], 2500–2550 m, 26o04´53´´N / 100o09´39´´E (NE slope with oaks, litter sifted)”, “[31]”, 12 June 2007, coll. M. Schülke. Paratypes: Two (2) males, 1 (1) female, same Fig. 1. Taridius yunnanus sp. nov., habitus, male. data as for holotype. Scale bar: 1 mm. Diagnosis. A small-sized and apterous Taridius species. Body wide and sub-parallel; coloration of upper-side pitchy-black; Head round, PW/HW = 1.35–1.37 elytra with humeri yellow spotted and with (1.36); eyes large, EyL/3AL = 1.33–1.42 margins and apex lighter; appendages rath- (1.37), strongly convex; about 1.5 times lon- er short (habitus: see Fig. 1). ger than tempora, the latter short and sub- Description. Body length 6.3–6.9 (6.6) mm. convex. Antero-lateral margins of forehead Colour of upper-side pitchy-black; pro- weakly curved and not reflexed. Upper-side notum a little paler, dark brown, its apical of head slightly convex, frontal foveae bare- and basal parts occasionally reddish; elytra ly perceptible, supraorbital area with three with narrow (1.5–2 intervals) brownish to five longitudinal carinae. Forehead and yellow margins and small humeral spots, vertex moderately densely and not roughly elytral apices yellowish to brownish. Clyp- punctate, middle part of forehead shallowly eus, labrum, mandibles, appendages, lateral wrinkled. Two pairs of supraorbital setae. gutter of pronotum brownish yellow. Lower Antennae short, EL/AL = 0.98–1.09 (1.03). surface black, elytral epipleura yellow, mar- Scape sub-cylindrical, without constriction gins of prothorax translucent, yellowish. and notches, its seta long. Pubescence of an-

© 2014 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 23(1): 106–110 108 I.I. KABAK & D.W. WRASE. NEW SPECIES OF TARIDIUS FROM CHINA tennal segments 1–3 very fine. Ultimate seg- their posterior third. Apical seta on interval ment of labial palpi fusiform in both sexes. 3 long. Umbilicate series consisting of 15 or Pronotum wide, PW/PL = 1.47–1.53 16 setae, strongly differentiated in length: (1.50), PW/PB = 1.26–1.27 (1.27), broad- setae 3, 10 (or 11), 12 (or 13), 14 (or 15) est in anterior half. Sides relatively strongly and occasionally 5 being longest. and evenly rounded anteriorly, briefly and Legs comparatively short, tibiae lon- feebly sinuate before hind angles; the lat- ger than tarsi. Segments of tarsi, except for ter small, obtuse-angular, blunt at apices, two usual apical setae, without pubescence occasionally slightly produced outward. on dorsal surface. Male protarsi weakly di- Basal margin of pronotum salient medially, lated, segment 2 about 1.5 times as long as slightly incised laterally, and curved near wide, segment 3 elongate; claws strongly hind angles; basal border complete. Ante- pectinate. rior margin deeply concave, its border al- Microsculpture in both sexes indistinct most complete, only interrupted medially; on head and pronotum, relatively distinctly anterior angles strongly protruding, lobed. developed on elytra, consisting of small iso- Lateral sides of pronotum widely expanded diametric meshes. Upper-side of tarsi with throughout, margins distinctly reflexed. shallowly engraved isodiametric micros- Basal foveae very shallow and vague, feebly culpture. Pubescence of body very sparse, irregularly rugose. Median line fine, barely short, suberect. impressed, strongly shortened anteriorly Lateral parts of thorax weakly punc- and posteriorly. Disc subconvex, sparsely tured; metepisterna a little longer than and finely punctate in middle, its lateral wide; visible abdominal segments 3–5 with parts and especially area of basal foveae a pair of paramedian setae; anal segment with rough punctures. Both basal and api- with a pair of setae along posterior margin cal transverse impressions barely visible. in both sexes. Two lateral setae: one in anterior half and Hind wings strongly reduced. another one in hind angles. Scutellum with- Hind coxae with two setiferous pores in out hairs and punctures. normal position. Hind femora with two se- Elytra wide, sub-rectangular, weakly tae in basal half and near mid-length. convex, widest near mid-length, EL/EW = Median lobe of aedeagus (Figs 2, 3) slen- 1.29–1.32 (1.31), EL/PL = 2.64–2.82 der and slightly curved; its apical lamella (2.74), EW/PW = 1.36–1.41 (1.40). Sides medium in length, narrowed toward apex, sub-parallel, weakly curved, nearly straight blunt at tip. Inner sac without sclerotized in middle; shoulders rounded but distinctly armature. Gonapophysis (Fig. 4) long, nar- protruding. Apices rather strongly oblique, row, weakly curved. slightly or moderately incised, both exter- Comparison. Among members of the ge- nal and sutural apical angles of each elytron nus Taridius, the new species is easily rec- broadly rounded. Marginal gutter rather ognizable in having the combination of the wide throughout, narrowed only near hu- following features: apterous; body broad; meri and external apical angle; lateral mar- dorsum densely punctate; colour of upper- gins distinctly reflexed. Basal border com- side mostly black; elytra with small humeral plete, weakly sinuate. Elytral striae deep, spots; lateral margins of pronotum strongly occasionally briefly interrupted, without rounded; sinuation before hind angles short. distinct punctures. Intervals often sub- In the combination of some external char- convex, rarely flat, their punctures fine, acters including the punctate upper-side, arranged in one, rarely two irregular lon- pectinate claws, fusiform ultimate segment gitudinal rows; interval 3 with two discal of male labial palpi, complete basal border setiferous pores attached to stria 3, one in of elytra, normally developed chaetotaxy anterior half of elytra and another one in of head and pronotum and the pattern of

In some characters (small body size, dark coloration, weakly developed pronotal microsculpture, wide elytra with two discal pores on third interval), the new species resembles T. niger Andrewes, 1935 described from Madras in southern India but differs in having the pronotum not distinctly cordate and the humeri with pale spots. Taridius yunnanus sp. nov. differs from Figs 2–4. Taridius yunnanus sp. nov.: 2, median T. birmanicus Bates, 1892, described from lobe of aedeagus, lateral view; 3, same, dorsal Teinzó in Upper Burma and thus geographi- view; 4, gonapophysis. Scale bar: 0.5 mm. cally close to the new species, in a less developed pale pattern of the elytra (in T. coloration, T. yunnanus sp. nov. resembles birmanicus the humeral macula is larger, ar- members of the genus Cymindis Latreille, cuately reaching about the first interval of 1806, especially those of the subgenus Tar- elytra, and the elytral apex is lightened to a sostinus Motschulsky, 1864 (sensu Emetz & much greater degree). Kryzhanovskij, 1973; Emetz, 1974). Nev- Etymology. Th e species name refers to ertheless, the carinate antero-lateral parts Yunnan province, where the type series was of the forehead, absence of pubescence on collected. dorsal surface of the tarsi and the structure Distribution. The new species was col- of the male genitalia (barely arched median lected in the vicinities of the Erhai Lake (to lobe of aedeagus and lacking of an armature the North of Dali City), Yunnan, China. At in the inner sac) allow us to place the new present it is the northernmost finding of a species within the genus Taridius. Taridius species. The limits and subgeneric structure of Bionomics. The species was found at the genus Taridius was recently discussed middle elevations (2500–2550 m a.s.l.) on by Kirschenhofer (2010) and Fedorenko a northeastern slope with oak shrubbery, (2012). The division of the genus into two and was sifted from leaf litter. Contrary to subgenera proposed by Kirschenhofer was the areas, situated to the West of the Erhai not followed by D. Fedorenko who defined Lake and in the Cang Shan, abounding in two lineages within the genus based on oth- water, the eastern and northeastern hills er characters. and mountains are more dry, partly steppe- In the system developed by Kirschen- like and without larger forest. hofer (2010), T. yunnanus sp. nov. could be placed into the subgenus Perseus Kirschen- hofer, 2003 based on a fusiform ultimate seg- ACKNOWLEDGMENTS ment of the male labial palpi and only one antero-lateral setae on each side of prono- We are very grateful to our friends and tum. In the system proposed by Fedorenko, colleagues: Michael Schülke (Berlin) for pro- the main features of the new species (dark viding us with this important material, and elytra, anal sternite bisetose in both sexes, Igor Belousov (St Petersburg) for his help indistinct microsculpture of head and pro- during the preparation of this manuscript. We are very pleased to express our appreciation to notum, and the weakly armed gonapophy- Jon Cooter (Oxford) for reading an early draft sis) argue for its closeness to the “first lin- of the manuscript, and we express our sincere eage” (Fedorenko, 2012: 72). However, the gratitude to Erich Kirschenhofer (Vienna) for densely and deeply punctate dorsum brings sending a photograph of the holotype of Taridius T. yunnanus sp. nov. in an isolated position birmanicus Bates, stored in the Genova Muse- within the genus. um, Italy.

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