BULLETIN DE L'INSTITUT ROYA L DES SCIENCES NATUREL LES DE BELG IQUE EN1i0MOLOG IE, 66: 85-89, 1996 BULLETIN VAN HET KON INKLIJ K BELG ISCH INSTITUUT VOOR NATUURWETENSC HAPPEN ENTOMOLOG IE, 66: 85-89. 1996

Six new species of from China (Diptera, )

Ding YANG

Abstract times as long as apical segment. Pro boscis brow ni sh yell ow with bl ac ki sh hairs; palpus yellow with bl ackish Six new species ( a bnormis, H. nudus, hairs. yunnanensis, Ludovicius acutatus, L. flavus, L. henan us) of the Thorax weakly metalli c green with gray ish pruinosity; subfamily Doli chopodinae fro m China a re described as new to mesonotum yellow laterally, scutellum (except base) yel­ science. low; pleuron yellow except pteropleuron bl ackish. Hairs and bri stl es on thorax bl ack; 4-5 irregul arly paired acr, Key words: Doli chopodi dae; ; Hercostomus; Para­ short and hair-li ke; 6 strong de. clius; Ludo vicius; new species ; China. Legs yellow. Hairs and bri stles on legs bl ack; mid and hind coxae with I bristl e, mid and hind femora with 1 preapical bristle; fo re tibia w ith 1 anterodorsal bristle, 2 Introduction posterodorsal bristles; mid tibia with 2 anterodorsal brist­ les, 2 posterodorsal bri stles; hind tibia with 2 anterodorsal The genu s Hercostomus LOEW, 1857 is worldwide in bristl es, 3 posterodorsal bristles. Relati ve lengths of seg­ di stribution with about 280 known species. El even spe­ ments (excluding coxae and trochanters) of legs LI (fore cies are known to occur in continental China (NEG ROBOV, leg) 2.5 : 2.4: 1.3: 0. 6: 0.4: 0.3: 0.3; Mil (mid leg) 3. 1: 3.3: 199 1). Two new species are a dded t o t he fa una of China. The genu s Paraclius LoEw, 1864, is worldwide in dis­ tribution with I 7 known species fro m the Palaearctic and Oriental regions (NEGROBOV, 199 1; DYTE, 1975 ) One new species is described fro m the mainland of China. The genu s Ludovicius RoNDAN I, 1843 is charac teri zed b y the rather large scape but relati vel y reduced pedi cel and very 1 elongated ari sta with apical fl ag whi ch i s variable in shape. It is di stributed in the Palaearcti c region only, with 6 known species (NEGROBOV, 1991). Only 1 species, L. miricornis PARENT, was known from China by the author (YANG in pres?). Three new species are described. Thi s research is based on the Coll ec ti on of China Agri cultural Uni versity (CAU) and the co ll ecti on of the Zoological In stitute (ZI) of Academi a S ini ca.

Hercostomus (Hercostomus) abnormis sp. nov. (Figs 1-2)

Male. Body length 2.4 mm , wing length 2.3 mm. Head metalli c green wi th grayi sh pruinos ity. H airs a nd bri stl es on head black; postocul ar hairs yell ow. Antenna yell ow, first fl age Ji omere ye ll ow except apex dark yel­ Figs 1-2. - Hercostomus (Hercostomus) abnormis sp. nov., low, nearly as long as wide, obtuse apica ll y; arista bl ack, male. I. antenna, lateral view; 2. genjtali a, lateral ind istinctly minutely pubescent, with b asal segment 0.3 view. 86 Ding YANG ' '

1.8: 0.9: 0.8: 0.5: 0.3; Lill (hind leg) 3.6: 3.8: 1.1: 1.3: bristles on legs black; mid and hind coxae with 1 bristle, 0.9: 0.7: 0.4. mid and hind femora with 1 preapical bristle; fore tibia Wing hyaline; veins dark brown; R4+5 and M strongly with 1 anterodorsal bristle, 2 posterodorsal bristles; mid convergent, CuAx ratio (length of m-cu/Jength of CuA tibia with 2-3 anterodorsal bristles, 2 posterodorsal brist­ distal section) 0.35. Squama yellow with yellow hairs. les and 1 anteroventral bristle; hind tibia with 2 antero­ Halter yellow. dorsal bristles, 3 posterodorsal bristles and l anteroven­ Abdomen weakly metallic green; terga 1-2 dark yellow to tral bristle. Relative lengths of segments of legs LI 2.6: yellow except posterior margin of tergum 2. 2.7: I. I: 0.8: 0.7: 0.5: 0.4; LII 3.2: 3.5: 1.4: 1.2: 1.0: 0.8: Hairs on abdomen black. Male genitalia (Fig. 2): Epan­ 0.4; Llll 3.4: 4.1: 1.1: 1.7: 1.1: 0.8: 0.5. drium longer than wide, cleft apically, with baso-Iateral Wing nearly hyaline; veins dark brown; R4+5 and M lobe furcate; cercus nearly triangular; hypandrium dis­ nearly parallel, CuAx ratio 0.55. Squama yellow with tinctly swollen with thin branches apically; aedeagus very black hairs. Halter yellow. slender and more or less straight apically. Abdomen metallic green with black hairs. Male genitalia (Fig. 4): Epandrium longer than wide, somewhat contrac­ Female. Unknown. ted apically, with lateral lobe rather large; cercus large Holotype 6 (ZI), Xinjiang: Yanqi (950-1, 170 m), and nearly quadrate, with short marginal denticles; hy­ 5.Vill.1958, Changqin LI. pandrium rather thick apically; aedeagus slender and Distribution. China (Xinjiang). distinctly curved. Remarks. This new species is similar to H. luteipleuratus Female. Unknown. PARENT from Shanxi. It may be separated from the latter Holotype 6 (ZI), Sichuan: Mountain Emei (1,800-1,900 by having the following characters: postocular hairs m), l4.VIII.l957, Zongyuan WANG. wholly yellow; R4+5 and M strongly convergent; squama Distribution. China (Sichuan). yellow with pale hairs. Remarks. This new species is very peculiar and easily separated from other known species of the genus from China by having the arista bare and acr absent. Hercostomus (Hercostomus) nudus sp. nov. (Figs 3-4) Paraclius yunnanensis sp. nov. Male. Body length 2.3 mm, wing length 2.7 mm. (Figs 5-6) Head metallic green with grayish pruinosity. Hairs and bristles on head black; postocular hairs black. Antenna Male. Body length 5.0 mm, wing length 5.2 mm. blackish; first flagellomere 1.8 times as long as wide, Head metallic green with dense pale gray pruinosity. pointed apically; arista black, bare, with basal segment Hairs and bristles on head black; postocular hairs black. 0.4 times as long as apical segment. proboscis blackish Antenna black; first flagellomere 1.2 times as long as with black hairs; palpus black with black hairs. wide, obtuse apically; arista black, minutely pubescent, Thorax metallic green with gray pruinosity. Hairs and with basal segment 0.35 times as long as apical segment. bristles on thorax black; acr absent, 6 strong de; scutellum Proboscis brown with black hairs; palpus black with without marginal hairs. black hairs. Legs yellow with tarsi brown to dark brown. Hairs and

3 5

Figs 3-4. - Hercostomus (Hercostomus) nudus sp. nov., male. Figs 5-6. - Paraclius yunnanus sp. nov., male. 5. antenna, 3. antenna, lateral view; 4. genitalia, lateral view. lateral view, 6. genitalia, lateral view. I I Six new species of Dolichopodinae from China 87

Thorax metallic green with pale gray pruinosity. Hairs and bristles on thorax black; 5-6 irregularly paired acr, short and hair-like; 6 strong de. Legs pale brownish yellow; fore coxa brownish yellow, mid and hind coxae blackish; dorsal margin (including apex) of hind femur and tips of tibiae brown to dark brown; tarsi brown to dark brown, fore and mid tarsomere I pale with dark tip. Hairs a nd bristles on legs bl ack; mid and hind coxae with I bristle, mid femur with 2 preapical bristles, hind femur with I preapical bristle; fore tibia with 3 anterodorsal bristles a nd 2 posterodorsal bristles; mid tibia with 4 anterodorsal bristles, 4 posterodorsal bristles, and 3 ventral bristles; hind tibia with 5 antero­ dorsal bristlesand 5 posterodorsal bristles. Relative. lengths of segments of legs LI 5.0: 4.9: 3.0: I . I: 0.9: 0.6: 0.6; LIT 6.9: 8.3: 4.3: 3. I: 2.2: I .2: 0.7; LUI 8.0: 10.8: Figs 7-8. - Ludovicius acutatus sp. nov., male. 7. apical por­ 2.9: 4.0: 2.6: 1.4: 0.9. tion of arista, lateral view; 8. genitali a, lateral nearly hyaline, tinged with brownish yellow on Wing view. anteroapical margin above R4+5; veins dark brown; M strongly curved toward R4+5 apically, CuAx ratio I .6. Squama pale yellow with black hairs. Halter yellow. Abdomen metallic green with black hairs. Male genitalia black, but coxae and fore tibia with only pale hairs; mid (Fig. 6): Epandrium longer th an wide, wide apically, with and hind coxae with I bristle, mid and hind femora with I tow separated lateral lobes irregular in shape; cercus large preapi cal bristle, mid femur with a row of brownish and somewhat subtrianguiar; hypandrium long with a ventral bristles; fore tibia with 2 dorsal bristles; mid tibia curved l ateral process; aedeagus s ligthly curved and thin with l dorsal bristle. apically. Wing hyaline; veins dark brown; R4+5 and M distinctly convergent apicall y, CuAx ratio 0.4. Squama yellow with Female. Unknown. pale hairs. Halter pale yellow. Holotype <3 (CA), Yunnan: Ruili (750 m), 3.V.l98 I, Chi­ Abdomen metallic green with thin gray pollen. Hairs on kun Yang. abdomen black. Male genitalia (Fig. 8): Epandrium lon­ Distribution. China (Yunnan). ger than wide, rounded apically; cercus thick apically, Remarks. This new species is similar to pilosellus BECKER with a weak apical incision; hypandrium divided into from the Oriental region. It differs from the latter in the irregul ar branches, with a long lateral arm; aedeagus following points: mid and hind coxae bl acki sh, first slender and acute apically. flagellomere shorter ( 1. 2 times as long as wide), cercus subtriangular with very short hairs; in pilosellus, mid and Female. Unknown. hind coxae yellow, first flagellomere longer (about 1.5 Holotype <3 (ZI), Sichuan: Maerkang (3,230 m), times as long as wide), cercus oval with long hairs 8.VII. I 961, Xiaof L1. apically (B ECKER, I 922). Distribution. China (Sichuan). Remarks. This new species is somewhat similar to du­ fouri MACQUART from Europe and North Africa. It may Ludovicius acutatus sp. nov. be separated from the latter by having the mid femur with (Figs 7-8) a row of ventral bristles. In dufouri, the mid femur has no ventral bristl es (STACKELBERG, 1941 ). Male. Body length 4 .3 mm, wing length 5.0 mm. Head dark metallic green with gray pruinosity. Hairs and bristles on head black; lower postocular hairs Ludovicius jlavus sp. nov. yellow. Antenna black; first flagellomere pale on ventral (Figs 9-lO) portion, oval; ari sta s ubapical and very slender, with swollen apex bearing an acute process. Proboscis brow­ Male. Body length 4.3 mm, wing length 3.9 mm. ni sh yell ow with pale hairs; palpus black with bl ack Head dark metallic green with gray pruinosity. Hairs hairs. and bristles on h ead bl ack; lower postocul ar hairs Thorax dark metalli c green with gray pruinosity. Hairs yellow. Antenna yellow, scape a nd pedicel blackish dor­ and bristles on thorax bl ack; 2-3 irregul arly paired acr, sally ; first flagell omere distinctly elongated, 2.3 times as short and hair-like; 6 strong de; scutellum with some long as wide, pointed apicall y; arista dorsal and very marginal hairs latera ll y. slender, dark brown, with sli ghtly swollen apex. Probos­ Legs [mid and hind tarsi broken] yellow; mid and cis yellow with black hairs; palpu brown with black hind coxae tinged with black. Hairs and bristles on l egs hairs. \I 88 Ding YANG

3.6 times as long as wide, pointed apically; arista dorsal and very slender, dark brown, with slightly swollen and 9 pale apex. Proboscis yellow with black hairs; palpus brown with black hairs. Thorax yellow with gray pruinosity; dorsum (except an­ terior margin and anterolateral area of mesonotum) me­ tallic green; pteropleuron blac]

Female. Unknown. Holotype (5 (CAU), Henan: Luanchuan, 14.VII.l996, Jien Xu. Distribution. China (Henan). Remarks. This new s pecies is very similar to the latter in the body coloration, but can be distinguished from it by having the scape and pedicel darker dorsall y and swollen apex of arista entirely bl ack.

Lucovicius henanus sp. nov. (Figs 11-13)

Male. Body length 3.6 mm, wing length 3.6 mm. Head dark metallic green with gray pruinosity. Hairs and Figs 11- 13. - Ludovicius henan.us sp. nov. , male. I I . antenna, bristles on h ead black; lower postocular hairs yellow. lateral view; 12. genitalia, lateral view; 13. Antenna yellow; fi rst flagellomere distinctly elongated, cercus, Lateral view. Six new species of Dolichopodinae frot~ 'china 89

Acknowledgments NEGROBOV , O.P., 1991. Family Dolichopodidae. In Soos, A. & L. PAPP (eds.): Catalogue of Palaearctic Diptera, 7: 11-139. Thanks are due to Prof. Yonghsan SHI (Zoological Ins­ Akademiai Kiad6, Budapest. titute of Academia Sinica, Beijing), Dr. P. GROOTAERT PARENT, 0., 1944. Dipteres Dolichopodidae recueillis en Chine (lnstitut Royal des Sciences Naturelles de Belgique, du Nord, en Mongolie et en Mandchourie par le R.P.E. Lt CENT. Brussels), Dr. H. ULRICH (Zoologisches Forschungsinsti­ Revue Franraise d'Entomologie, 10 (4): 121-131. tut und Museum A. Koenig, Bonn), Prof. Chi-kun YANG STACKELBERG, A.A. , 1933-1941. 29. Dolichopodidae. In LI ND­ NER, E. (ed.: Diefliegen der Palaearktischen Region, 4(5), Lief. (China Agricultural University) for their help 111 many 71: 65-128; Lief. 82: 129-176; Lief. 138: 177-224. ways. YANG, D. , 1996. New species of Hercostomus and Ludovicius from North China (Diptera: Dolichopodidae). Deutsche Ento­ mologische Zeitschrift, 43(2) (in press). Literature

BECKER, T. , 1922. Dipterologische Studien. Dolichopodidae der Indo-Australischen Region. Capita Zoologica, I (4): 1-247. Department of Entomology DYTE, C.E., 1975. Family Dolichopodidae. In DELFI NA DO, M.D. China Agricultural University and D.E. HARDY (eds.): A catalog of the Diptera of the Oriental Beijing 100094 region 2: 212-258. University of Hawaii Press, Honolulu. China