中国卷叶蛛科一新属新种记述(蛛形纲:蜘蛛目)

A NEW GENUS AND NEW SPECIES OF THE FAMILY DICTYNIDAE FROM CHINA (ARACHNIDA: ARANEAE)

本文记述采自安徽休宁县齐云山卷叶蛛科(Dictynidae)一新种。因该科内无可容纳此新种的属,故建立齐云蛛属Qiyunia gen.nov.并将新种定名为列氏齐云蛛,新属新种。文内列表比较了洞叶蛛亚科(Cicurininae)布朗蛛 Brommella和旋栓蛛 Lathys两近似属与新属的鉴别特征。

Among the specimens collected from Mt. Qiyun, Anhui Province, a very interesting dic-tynid spider was found. Its characteristics are contradictory to those of the six known genera of the subfamily Cicurininae, Dictynidae, so it is suggested to establish a new genus Qiyunia for accomodating the new species, which is to be named as Qiyunia Ichtincni.Qiyunia gen. nov.Body minute. Surface of the body without markings. Eye indistinct. Promargin of cheli-cera with 4 teeth, retromargin 5 teeth. Anterior margin of labium wide, slightly concaved. No fovea. Legs without distinct spines, with setae or bristles. Three claws. Metatarsus lack of distinct calamistrum. Cribellum undivided, long semicircular in shape. Cymbium of male palp oval, its basa] part with several thick curved setae. Embolus originated from apical part of genital bulb. Length of the apical segment of the posterior spinneret less than that of the basal segment.Type species: Qiyunia lehtincni sp. nov.Qiyunia lehtineni sp. nor. (figs. 1-10)Holotype ♂, allotype ♀, Mr. Qiyun, Xiuning County, Anhui Province (29°47’N, 113°11’E), April 9, 1986, by Xu, Y. J.; paratype 1 ♀, Qiyun, Oct. 29, 1984, by Wang Ling. Types are deposited in the Institute of Zoology and Huizhou Teachers’ College respectively.Body length of the male 1.45mm. Cephalothorax 0.65mm long, 0.48mm wide; abdomen 0.80mm long, 0.48mm wide. Body light yellow in colour, no markings. Cephalothorax oval in shape. Anterior margin of carapace wide and straight. Eyes distinct, perhaps 4 in total, colourless and transparent. Carapace slightly convex, no median furrow. Chelicera with 4 promarginal teeth and 5 retromarginal teeth. Labium long than wide, its anterior margin wide and slightly concave, lateral angles each with a long curved seta. Three clws, upper claw with 8 teeth, lower claw with 2 long and 1 short teeth. No calamistrum. Leg fomula 1,4,2,3. Abdomen long oval in shape, no stripes. Cribellum semicircular, undivided. Anterior spinnerets longer and more slender than the posterior ones, lengths of the apical segments less than half of the basal ones. Tibial process obtuse. Cymbium oval, its basal portion with three curved long hairs. Bulb disk-like, embolus originated from its central portion.Body length of the female 1.56mm. Cephalothorax 0.65 ram long, 0.45mm wide; abdomen 0,91 mm long, 0.51 mm wide. Body shape and colour similar to male. Epigynum and vulva as shown in figs, 9 and 10.