中国的乌花蝽属和圆花蝽属记述(半翅目:花蝽科)

Genus Wollastoniella Rt. and Genus Bilia Dist.(Hemipteta: Anthocoridae) from China

乌花蝽属Wollastoniella Reuter迄今已知共6种,其中分布于亚洲者仅1种。Carayon(1982)报导,爪哇产的W.testudo Carayon在茶树上捕食一种Tenuipalpidae的螨类。圆花蝽属Bilia Distant已知5种,均为亚洲分布,我国已有记录为台湾的B.castanea(Carvalho)(Carayon ＆ Miyamoto,1960)。据Carayon ＆ Miyamoto(1960),圆花蝽属可能捕食蚜虫和叶蝉的卵。 本文为乌花蝽属在我国以及圆花蝽属在中国大陆的首次报导。

1. Wollastoniella marginella Bu et Zheng , sp. n. (Figs. 2,4, 6, 10,12)Head piceous ((?) ) or testaceous ((?)), length 0.30, width 0.58, interocellar space = 3.4 ((?)) or 4 ((?)) times of ocellar diameter; (?) antenna piceous, basal half of seg. Ⅱ yellow, seg. length 0.10 : 0.40 : 0.28 : 0.28; (?) antennal seg. Ⅰ piceous, Ⅱ and Ⅲ light yellow, Ⅳ testaceous. Rostrum reaching coxal apex of fore leg or slightly exceeding. Pronotum piceous ((?)) or testaceous ((?)), length 0.34, collar width 0.32, hind margin width 0.86, flattened anterior angle very broad, about 1 / 2-3 / 5 the width of eye diameter, square-shouldered, lateral margin almost straight, then turning outside (Fig. 10). Hemelytron piceous ((?) ) or brown ((?)), pubescence as shown in Fig. 6, evenly distributed; exocorium length 0.80, cuneus length 0.26; membrane greyish brown at basal half, apical half greyish white. Legs light yellow with coxae and femora piceous. Clasper as shown in Fig. 4. Body length 2.0.Holotype (?) , paratypes 12 (?) (?) : Yunnan (Wuding, 25°?0'N, 102°20/E), 8-Ⅷ-1986, deposited in Nankai University.Allied to W. niger Carayon on clasper pattern, but body larger, hemelytral pubescencemuch sparser and longer, lateral margin of corium more convex. Antennal segments pro-portions different, 'median process 'of clasper flagellum with a proximad pointing spinouslobe at its base, conus with a triangular lobe medially at interior margin (Fig. 4).2. Wollastoniella brunnea Bu et Zheng, sp. n. (Figs. 1, 3, 8, 9)Dark castaneous, pubescence rather long and dense. Head apex testaceous, head length 0.28, width 0.42, interocellar space = 5 times the eye diameter. Antenna brown with seg.Ⅰ, Ⅱ, and basal 1/4 of Ⅲ testaceous, seg. length 0.10 : 0.36 : 0.28 : 0.28. Pronotum length 0.34, collar width 0.36 , hind margin width 0.92, flattened carination gradually widened latero-anteriorly, its largest width half the diameter of eye. Hemelytron (Fig. 8) with lateral margin slightly convex, membrane with basal half greyish brown, apical half greyish white; exocorium length 0.80, cuneus 0.28. Legs yellow with coxae and femora dark brown. Clasper of niger-marginella type, as shown in Fig. 3. Body length 2.5-2.8. Holotype 3 , paratypes 2 (?) (?) : Sichuan (Mt. Emei, 29°'N, 103°20'E), 18-Ⅵ-1955, deposited in the Institute of Zoology, Academia Sinica, Beijing.Allied to W. niger Carayon and W. marginella sp. n., but can be distinguished by its larger body, antennal coloration, and clasper structure (conus lobe at interior margin broad and blunt-apexed, outer ramus of flagellum denticulate basally, inner ramus or ' median process' characteristic).3. Wollastoniella yunnanensis Bu et Zheng, sp. n. (Figs. 5, 7, 11)Blackish brown, pubescence long and dense. Head dark brown with apex testaceous, length 0.25( (?) )-0.26 ((?)), width 0.37, interocellar space 4.5 ( (?) ) or 5 ((?) ) times the eye diameter, eye with a few minute hairs on some facets. Antenna light yellow, seg. length 0.08 : 0.25 : 0.15 : 0.25. Pronotum (Fig. 11) black, length 0.32, collar width 0.34, hind margin width 0.76, lateral margin almost straight, drooping-shouldered, antero-lateral carination rather narrow, largest width one third of eye diameter. Hemelytron (Fig.7) with lateral margin convex, membrane uniformly greyish brown or paler; exocorium length ((?) ) 0.58, ((?) ) 0.68, cuneus length 0.18. Legs light yellow . Clasper (Fig. 5) with conus bilobed apically, flagellum simple, not branched into 2 rami, sharply turned forward subapically. Body length 1.4-1.7.Holotype (?) , paratype 1 (?): Yunnan (Jinghong, 22°N, 100°45'E), 9-Ⅹ-1979, deposited in Nankai University.Body form close to W. niger Carayon, ferruginea Carayon and marginella sp. n. , but the characteristic clasper can distinguish this species from all the others.4. Bilia castanea (Carvaiho, 1951)Hainan Is. (2 (?) (?) 3 (?) (?)), Taiwan (Carayon & Miyamoto, 1960).5. Bilia japonica Carayon et Miyamoto, 1960Shaanxi (Lueyang, 33°20'N, 106°10'E, 1 (?)).