from China: IV
Transkrypt
from China: IV
Entomological Review, Vol. 85, No. 6, 2005, pp. 642–647. Translated from Entomologicheskoe Obozrenie, Vol. 84, No. 3, 2005, pp. 569–575. Original Russian Text Copyright © 2005 by Lopatin. English Translation Copyright © 2005 by Pleiades Publishing, Inc. New Species of Leaf Beetles (Coleoptera, Chrysomelidae) from China: IV I. K. Lopatin Belarusian State University, Minsk, Belarus Received February 9, 2004 Abstract—The following new species are described from Southwestern China on the basis of examination of the material from the Zoological Institute, Russian Academy of Sciences (St. Petersburg), where the types are deposited: Chrysolina warchalowskii sp. n., Ch. wangi sp. n., Ch. mauroi sp. n., Ch. khalyktavica sp. n., Oreomela sichuanica sp. n., and Pyrrhalta silfverbergi sp. n. In the present communication, new species of the leaf-beetle subfamilies Chrysomelinae and Galerucinae are described on the basis of examination of the material collected by I.A. Belousov and I.I. Kabak in the Chinese provinces Sichuan, Gansu, and Yunnan. apical angles. Punctation on elytra fine, slightly coarser than those on pronotum, forming paired rows with sparse and smaller punctures on intervals. Epipleura wide at base, gradually narrowed toward apex, well-visible in lateral view. The type specimens of the new species described are deposited in the Zoological Institute, Russian Academy of Sciences (St. Petersburg). First segment of fore and middle tarsi dilated, slightly narrower than 3rd one. Body length 5.7 mm, width of elytra in middle part 3.5 mm. Chrysolina warchalowskii Lopatin, sp. n. Description. Male (holotype). Body apterous, wide-oval, black, without metallic luster; dorsal side convex, lustrous, finely punctate. Labrum tar-brown; maxillary palps, antennae, and legs rufous. Head weakly lustrous, very finely shagreened, with sparse and fine, but distinct punctures denser and coarser on clypeus and at eyes. Antennae short; 1st segment large and thick; length ratio of segments 14 : 8 : 10 : 8 : 8 : 9 : 8 : 9 : 9 : 11: 16; 5 apical segments thicker than preceding ones, with short whitish hairs. Pronotum wide, 2.2 times as wide as long (Figs. 1, 2), with well-developed lateral carinae separated from disc by depression widened at ends. Punctures of pronotum distinct, fine and sparse on disc (intervals between them 2–4 times diameter of punctures) and coarser and denser on inner side of lateral carinae. Anterior angles of pronotum strongly projecting, narrowly rounded at apices; posterior angles nearly rectangular. Scutellum flat, smooth, strongly lustrous. Length of elytra 3 times length of pronotum, 1.16 times their maximum width (at end of anterior 1/3); lateral margins straightly diverging from humeral angles, then gradually roundly converging posteriorly till Female. Body length 7.2 mm, width 4.3 mm. Elytra strongly convex, with repeatedly interrupted paired rows of punctures. Anterior angles of pronotum more strongly projecting than those in male, punctation of lateral carinae denser. Material. China, “S Gansu, SSW of Minxian, NE of Luoda, NE of Jiabu, ∼34°01'N/104°04'E, 3600– 4000 m, alpine zone, summit, 16.VII.2002, Belousov et Kabak leg.,” 1 ♂ (holotype) and 2 ♀ (paratypes). Diagnosis. The new species clearly differs from all the Chinese congeners in the uniformly black body and rufous antennae, palps, and legs, and also in the strongly projecting anterior angles of the pronotum. Etymology. The new species is named for the wellknown Polish entomologist Prof. A. Warchalowski, who made a great contribution to the knowledge of the fauna and systematics of leaf beetles of the Palaearctic Region. Chrysolina wangi Lopatin, sp. n. Description. Male (holotype). Body apterous, wide; its length 1.75 times maximum width. Upper side of body lustrous, blackish green with metallic tint. Head and pronotum darker than elytra. Antennae, except for rufous lower side of 2 basal segments, and legs black. Underside black, lustrous. 642 NEW SPECIES OF LEAF BEETLES ... : IV 643 Figs. 1, 2. Chrysolina warchalowskii sp. n., pronotum: (1) male, (2) female. Clypeus convex, with straight anterior margin, separated from frons by smooth arcuate sulcus and covered with distinct fine punctures. Labrum with anterior emargination, covered with punctures coarser than those on clypeus and bearing long cilia on lateral parts. Ultimate segment of maxillary palp large, straightly truncate at apex. Antennae short, with apices nearly reaching humeral angles of elytra. Length ratio of antennal segments 17 : 9 : 14 : 10 : 12 : 9 : 12 : 13 : 13 : 13 : 17; 7–11th segments thickened and covered with dense erect and subrecumbent hairs. Pronotum 2.5 times as wide as long, with convex lateral carinae separated from disc by wide shallow depression covered with sparse deep punctures distinctly coarser at base of depression. Disc with fine, but distinct, rather sparse punctures separated by intervals mostly exceeding diameter of punctures. Anterior margin of pronotum deeply emarginate; therefore, apically rounded anterior angles distinctly projecting forwards. Anterior and lateral edging fine. Scutellum small, with rounded apex and sparse punctures. Elytra without humeral tubercles, 3 times as long as pronotum; their length 1.25 times their total width. Punctures on elytra large, forming dense paired rows, confused in places (especially on disc) because of presence of additional punctures of same size; intervals with very fine and sparse punctures. Epipleura wide, narrowed at level of abdominal sternite I and distinctly visible till apices. Fine adsutural stria distinct only on apical declivity, merged with lateral edging at elytral apices. Tibiae distinctly widened toward apices, without carinae; 1st segment of all tarsi distinctly widened, longer and wider than 2nd one. Claws simple. Body length 7 mm. Aedeagus as in Figs. 3, 4. Female (paratype). Body length 7.8 mm, width 4.7 mm. Elytra widest before apical declivity. Two basal antennal segments chestnut-brown. ENTOMOLOGICAL REVIEW Vol. 85 No. 6 2005 Material. China, “Yunnan, NNE of Kunming, 15 km NE Dongchuan, N of Daohe Shan, 3200– 3600 m, 23.IV.2001, Belousov et Korolev leg.,” 1 ♂ (holotype), 1 ♀ (paratype). Diagnosis. The species belongs to a group of apterous, metallic-colored Chinese species and differs from them in the shape of the aedeagus. Etymology. The species is named for a Chinese expert in leaf beetles, Dr. Wang Shuyong. Chrysolina mauroi Lopatin, sp. n. Description. Male (holotype). Body wide-oval, weakly rounded at sides, 1.6 times as long as wide. Upper side of body black, weakly lustrous, very densely and finely shagreened. Two basal antennal segments rufescent ventrally. Underside and legs black. Frons and clypeus with sparse and fine punctures. Ultimate segment of maxillary palp long, with parallel sides and rounded apex. Antennae short, thickened after 6th segment and covered with short whitish hairs. Length ratio of antennal segments 15 : 7 : 10 : 8 : 8 : 8 : 8 : 9 : 8 : 10 : 16. Pronotum twice as wide as long, with convex disc and thickened lateral carinae bearing on inner side 1 row of coarse punctures merging in places; punctation on disc distinct, consisting of fine punctures separated by unequal intervals; punctures on lateral carinae also fine and distinct, but sparser than those on disc. Edging of all margins very fine, that of basal margin interrupted in middle. Scutellum flat, smooth, with tapered apex. Elytra 2.6 times as long as pronotum, only 1.11 times as long as wide, with rows of punctures larger than those on pronotum and with wide intervals; punctures in rows sparse on disc and denser at sides; 6th and 7th rows of punctures confused in places. Punctation on intervals very fine and sparse. 644 LOPATIN Figs. 3–10. Chrysolina spp., aedeagus: (3, 4) Ch. wangi sp. n.; (5, 6) Ch. mauroi sp. n.; (7, 8) Ch. khalyktavica sp. n.; (9, 10) Ch. kuldzhensis Lop. [(3, 5, 7, 9) ventral view, (4, 6, 8, 10) lateral view]. First segment of all tarsi distinctly wider and longer than 2nd one. Aedeagus as in Figs. 5, 6. Material. China, “Sichuan Prov., Kanding distr., Tagu, 3500 m, 27–30.VII.1992, R. Dunda leg.,” 1 specimen (holotype). Diagnosis. Among Chinese species of the subgenus Allohypericia, to which the new species belongs, it can be compared only with Ch. aeruginosa Fald., differing from it in the punctation and shape of the aedeagus. Etymology. The species is named for a well-known expert in leaf beetles, Mauro Daccordi, who has pointed out specified characters of this species. Chrysolina khalyktavica Lopatin, sp. n. Description. Body apterous, black; elytra tarbrown, with wide circular matte orange edging covering at sides 2 marginal intervals. Two basal antennal segments rufous, darkened on upper side. Upper side of body strongly lustrous. ENTOMOLOGICAL REVIEW Vol. 85 No. 6 2005 NEW SPECIES OF LEAF BEETLES ... : IV 645 Figs. 11–16. Oreomela spp.: (11–13) O. sichuanica sp. n. [(11) pronotum; (12, 13) aedeagus, ventral and lateral view], (14–16) O. mirabilis Lop. [(14) pronotum; (15, 16) aedeagus, ventral and lateral view]. Clypeus very finely shagreened and covered with rather fine and shallow punctures. Anterior margin of clypeus with transverse row of long cilia at sides. Similar row also present on labrum, cilia at sides considerably longer than those at center. Antennae short, length ratio of antennal segments 13 : 7 : 12 : 8 : 9 : 8 : 10 : 9 : 10 : 12 : 17, six apical segments thickened and covered with short whitish hairs. Ultimate segment of maxillary palp twice as long as preceding one, wide, obliquely truncate at apex, with rounded angles. Pronotum twice as wide as long, widest in basal 1/4, convex. Lateral carinae with vertical inner margin at base, separated from disc by smooth narrow depression along rest of length. Punctation on pronotum very fine and irregular, nearly all intervals between punctures much greater than their diameter. Edging of pronotum slightly widened at sides and at anterior angles. Scutellum small, smooth. ENTOMOLOGICAL REVIEW Vol. 85 No. 6 2005 Elytra 1.9 times as long as pronotum, 1.4 times as long as wide in middle, with very weakly rounded sides, roundly narrowed from beginning of apical declivity to apical angles. Punctures dense and deep, forming regular rows with tendency toward pairing. Intervals flat on disc, weakly convex at sides, very finely shagreened, with scattered minute punctures. Underside black, lustrous. Tarsal segments strongly widened, of subequal width, but 1st segment considerably longer than 2nd one. Aedeagus (Figs. 7, 8) with rounded tooth at apex. Material. China, Xinjian, Khalyktau Mt. R., N of Kungurbulak Riv., 3600 m, 31.VII.2003, 3 ♂ (holotype and paratypes); Aksay Riv., W of Kaptynsu riv., 3500 m, 29.VII.2003, 1 ♀ (paratype). A total of 4 specimens collected by I.I. Kabak. Etymology. The species’s named originates from the name of the collecting site, Khalyktau Mt. R. in Xinjian. 646 LOPATIN length, fine anterior edging interrupted in middle, posterior margin not edged. Punctation of pronotum rather fine and irregular; larger, but not coarse punctures scattered over entire pronotum, but densest in posterior half (some intervals between punctures equal to diameter of punctures, others twice as wide); considerably smaller, as though dimpled punctures prevailing in anterior half, but also sparse. Elytra wide, only 1.2 times as long as wide, 1.8 times as long as pronotum. Punctures on elytra forming in places irregular rows on disc, irregular at sides; punctures of same size and depth as those at base of pronotum; intervals between punctures very finely wrinkled. Lateral edging narrow, visible in dorsal view only at humeral angles, becoming linear toward apices; basal margin of elytra edged only along short distance before humeral angles. Epipleura very wide at base, gradually narrowing toward elytral apices. Figs. 17, 18. Pyrrhalta silfverbergi sp. n., aedeagus, ventral and lateral view. Diagnosis. This species is closely related to Ch. kuldzhensis Lop. and clearly differs from it in the shape of the aedeagus (Figs. 9, 10), shallower lateral groove of the pronotum, and coloration of the elytra (in Ch. kuldzhensis, elytra are brownish red, slightly paler at base and at sides, with tar-black margination of punctures in rows). The intervals of the elytra in the paratypes are convex at sides to a varying extent but not strongly. Apparently, this character may vary in both species. Oreomela (Oreomelina) sichuanica Lopatin, sp. n. Description. Male (holotype). Body wide-oval, strongly convex, black, with strong brass luster; legs and antennae black; labrum, tibiae at bases, tarsi, and 4 apical antennal segments brown. Head wide; frons and vertex convex, with minute punctures visible only at great magnification; labrum with rather deep emargination of anterior margin and long cilia at sides. Antennae rather slender, length ratio of their segments 14 : 10 : 12 : 10 : 10 : 10 : 11 : 10 : 11 : 14 : 17. Penultimate segment of maxillary palp short and wide; ultimate one long, narrowly oval. Pronotum (Fig. 11) 1.5 times as wide as long, widest near middle, arcuately convex; sides widely rounded, nearly straight before posterior angles; posterior angles slightly projecting in the form of short rectangular teeth. Lateral edging very narrow along entire First and third segments of fore tarsus of equal width. Aedeagus (Figs. 12, 13) wide, with tooth at apex. Body length 6.1 mm, width 3.5 mm. Material. China, S Sichuan, 35 km NNW of Mianning, NW of Lajiajia—28°48'N/102°02'E, 3400 m, upper forest zone, 4.VIII.2002, Belousov et Kabak leg., 1 ♂ (holotype). Diagnosis. The species is similar to O. mirabilis Lop. in the shape and character of the pronotal punctation and structure of the aedeagal apex, but differs in the coloration of the upper side of the body and irregular punctation of the wider pronotum (Fig. 14). The aedeagus in this species also exhibits a set of differences (Figs. 15, 16). Pyrrhalta silfverbergi Lopatin, sp. n. Description. Male (holotype). Body obovate, moderately convex, brown; labrum, femora at apices, tibiae, tarsi, and antennae (except for 1st segment) tarblack. Punctation of head, pronotum, and elytra dense and distinct, with intervals between punctures shorter than their diameter. Hairs on upper side of body short, subrecumbent, with slightly ascending apices, not concealing background. Frontal carina convex, triangular, narrow in upper part. Frontal tubercles transverse, convex, punctate as vertex, weakly separated by narrow shallow depression in posterior part. Eyes strongly convex. Labrum with transverse row of setiferous pores. Antennae thick, with apices extending beyond anterior 1/3 of elytra, 1st and 3rd segments of equal length, 2nd one ENTOMOLOGICAL REVIEW Vol. 85 No. 6 2005 NEW SPECIES OF LEAF BEETLES ... : IV half as long as 3rd; all segments covered with fine recumbent hairs and bearing short erect cilia at apices. Pronotum 1.64 times as wide as long, widest slightly before middle, then nearly straightly narrowing forwards and backwards; disc with 2 shallow depressions on lateral declivities, separated by convexity widely depressed along middle. Entire pronotum covered with fine and rather sparse hairs. Anterior angles bearing setiferous pore, dentiform projecting beyond contour of pronotum. Posterior angles obtused, basal margin emarginate behind them. Scutellum short and wide, finely wrinkled. Elytra 3.8 times as long as pronotum, twice as long as wide across humeri, gradually and uniformly widened from humeral calli to beginning of apical declivity, then arcuately narrowed toward narrowly rounded sutural angles. Reflexed lateral margin of elytra wide, visible in dorsal view from humeral callus to apical declivity, with punctures as dense and deep as those on rest of elytral surface. Epipleura gradually narrowing posteriorly from base and disappearing at elytral apices. Underside with dense fine recumbent hairs. First segment of all tarsi widened, distinctly wider than 2nd ENTOMOLOGICAL REVIEW Vol. 85 No. 6 2005 647 and nearly as wide as 3rd segment. Claws bifid, their inner lobe shorter than outer one. Anal sternite with shallow and short emargination at apex. Aedeagus (Figs. 17, 18) with asymmetrical apex forming triangular point. Body length 8 mm; width 3 mm across humeri and 3.8 mm before apical declivity. Female (paratype). Body length 8.5 mm in paratype, 9 mm in other specimens [Sic!—Ed.]. First segment of all tarsi not widened, 3rd one distinctly wider than others. Material. China, “CH, S Sichuan, Emei-Shan Mts. (SW slope), 2000 m, 19.V.2001, Belousov et Korolev leg.,” 7 specimens (4 ♂, including holotype, and 3 ♀). Diagnosis. This species is similar to P. ningpoensis Gressitt et Kimoto in the size and coloration and differs from it in the shape of the aedeagus and length ratio of the antennal segments. ACKNOWLEDGMENTS The author is grateful to his colleagues, I.A. Belousov and I.I. Kabak, for the opportunity to examine their collections.