韩广欣,张锋,朱明生

(河北大学生命科学学院,河北保定 071002)

海南岛云斑蛛属1新种(蜘蛛目:园蛛科)

韩广欣,张锋,朱明生

(河北大学生命科学学院,河北保定 071002)

记述了中国海南岛云斑蛛属1新种,双斑云斑蛛Cyrtophorabimaculatan.sp.模式标本保存于河北大学博物馆.文中测量单位:mm.

蜘蛛目;园蛛科;云斑蛛属;新种;海南岛;中国

迄今为止,园蛛科A raneidae已记述167属2 990种,中国已报道41属338种[1].该科为小到大型蜘蛛,全球性分布.Simon于1864年建立园蛛科云斑蛛属.目前,本属共包括47种,其中10种分布于中国[1].

云斑蛛属雌雄个体差异很大,存在巨雌或倭雄现象.本属背甲头区宽,腹部一般具有1对或多对突起,有些种类后部具分叉.云斑蛛属分布于温暖地区,美洲分布1种[2].

笔者在镜检海南岛园蛛科标本的过程中,发现了云斑蛛属1新种,即双斑云斑蛛Cyrtophorabimaculatan.sp.此前,海南岛仅报道1种:海南云斑蛛CyrtophorahainanensisYin et al,1990.现将本新种加以描述和图示.

Cy rtophora Simon,1864

模式种:桔云斑蛛Cyrtophoracitricola(Fo rsskål,1775).

双斑云斑蛛,新种Cyrtophorabimaculatan.sp.(图1-3).

正模1♂,副模2♀,海南岛吊罗山自然保护区(18.729°N,109.864°E),2009年6月7日,韩广欣等采.

词源学:拉丁语“bimaculata”意为“双斑”,指本种雌雄腹部2种不同的颜色.

鉴别特征:本新种与云斑蛛属其他种的区别在于本新种雄蛛触肢器插入器长,引导器呈长方形薄片状,顶突三角形具横纹;雌蛛外雌器中板心形.

描述:雄蛛,体长3.36.头胸部长1.48,宽1.36;腹部长1.88,宽1.36.头胸部深褐色,颈沟褐色,放射沟不明显.中窝浅,纵向.头区向前凸出.额高大于AM E直径的2倍.前眼列后曲,后眼列几乎平直.眼的测量:AM E 0.18,ALE 0.12,PM E 0.12,PLE 0.14;AM E—AM E 0.14,AM E—ALE 0.12,PM E—PM E 0.17,PM E—PLE 0.19;中眼域长稍大于宽(0.43∶0.38),前边稍大于后边(0.41∶0.35).颚叶、下唇和胸板深褐色.螯肢黄褐色,前齿堤具4齿,第1齿和第3齿较大,后齿堤具2齿.步足式:1243.步足测量:Ⅰ6.53(1.70+2.30+1.70+0.83);Ⅱ5.50(1.43+1.94+1.45+0.68);Ⅲ3.54(1.13+1.03+0.85+0.53);Ⅳ5.38(1.60+1.69+1.46+0.63).腹部背面观卵圆形,长大于宽,深褐色,散布有灰色斑点,前方具有1对白色的突起;腹面灰色具有1对白色条纹.舌状体大.纺器褐色.触肢器中突末端呈钩状;插入器长;引导器呈长方形薄片状;顶突三角形具横纹(图1 e-f;图2 f-g).

雌蛛,体长20.53.头胸部长7.88,宽6.55;腹部长12.65,宽8.21.头胸部黄色.中窝形成1个凹陷.额高大于AM E直径.前眼列后曲,后眼列几乎平直.眼的测量:AM E 0.35,ALE 0.24,PM E 0.21,PL E 0.24;AM E—AM E 0.28,AM E—AL E 0.55,PM E—PM E 0.40,PM E—PL E 0.65;中眼域长与宽几乎相等(0.87∶0.83),前边稍大于后边(0.85∶0.81).颚叶、下唇和胸板深褐色.螯肢橙黄色,粗壮,前、后齿堤各具4齿.步足黄褐色,散布有黑色素,步足上着生有刚毛.步足式:1243.步足测量:Ⅰ32.42(10.21+11.00+8.88+2.33);Ⅱ30.69(10.05+10.32+8.10+2.22);Ⅲ19.10(6.44+6.16+4.72+1.78);Ⅳ30.59(10.05+10.10+8.33+2.11).腹部长大于宽,前部具有1对黑-白色突起,后部具有2块大的黑斑.外雌器中板背面观呈心形;纳精囊长卵圆形;受精管短(图1 b-d;图2 b-d).

体长变化:雄蛛(n=1)3.36;雌蛛(n=2)20.53～25.11.

分布:中国(海南岛)(图3).

图1 双斑云斑蛛,新种Cy rtophora bimaculata n.sp.

图2 双斑云斑蛛,新种Cy rtophora bimaculata n.sp.

图3 双斑云斑蛛,新种Cy rtophora bimaculata n.sp.模式标本产地Fig.3 Type locality of Cyrtophora bimaculata n.sp.

The spider family A raneidae contains 167 genera and 2 990 species in theworld-w ide[1].Up to now,a total of 41 genera and 338 species have been recorded in China[3-8].Members of the family A raneidae are small-to large-sized,distributed all over theworld.The genusCyrtophora,of the family A raneidae,was established by Simon,1864.A t p resent,the genus included 47 described species[1].Among them,10 species have been reported from China[3,5,8].

InCyrtophora,the m ales are dw arfed and the fem ales large.It has a w ide cephalic region of the carapace,and the abdomen may have more than one pair of humps and may be posterio r biforked.Cyrtophorahasmany species wo rld-w ide in warmer areas;only one is introduced in America[2,9].

While examing the spider specimens collected f rom Hainan Island,southern China,we found a newspecies of the genusCyrtophora[10-17].In the genusCyrtophora,justone speciesC.hainanensisYin et al.1990 has been reco rded in Hainan.Both sexesofCyrtophorabimaculatan.sp.are described in the paper.

Cyrtophora Simon,1864

Type species:Cyrtophoracitricola(Fo rsskål,1775)

Cy rtophora bim aculata n.sp.

Type material:Holotype male and two female paratypes f rom M t.Diao luoshan National Nature Reserve,Hainan Island,China(18.729°N,109.864°E),7 June,2009,HAN Guang-xin leg(M HBU).

Etymo logy:The specific name is derived f rom the Latin“bim aculata”meaning“double spo ts”,referring to two different co lor of abdomen in female and male.

Diagnosis:This new species differs from other mem bers ofCyrtophoraby,embo lus long,conductor quadrate slice-shape,terminal apophysis triangular w ith horizontal lines in male;median p late heartshaped in epigynum from do rsal view in female.

Distribution:Only know n from the type locality(Fig.3).

致谢:衷心感谢张超、郭胜涛和张晓晓协助采集海南岛蜘蛛标本.

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(责任编辑:梁俊红)

A New Species of the Genus Cy rtophora
(Araneae:Araneidae)from Hainan Island,China

HAN Guang-xin,ZHANG Feng,ZHUMing-sheng
(Co llege of Life Sciences,Hebei U niversity,Baoding 071002,China)

A new speciesof the genusCyrtophorawas described under the nameofCyrtophorabimaculatan.sp.from Hainan Island,southern China.Bo th sexesofC.bimaculatawere illustrated here.The specim en is deposited in the M useum of Hebei U niversity,Baoding,China(M HBU).

A rachnida;A raneidae;Cyrtophora;new species;Hainan Island;China

Q 959.226

A

1000-1565(2010)06-0692-04

2009-10-09

科技部基金资助项目(2006FY110500-3)

韩广欣(1981—),女,河北藁城人,河北大学在读博士研究生.

张锋(1971—),男,河北蔚县人,河北大学教授,主要从事蛛形动物学研究.