海南島云斑蛛屬1新種(蜘蛛目:園蛛科)

韓廣欣,張鋒,朱明生

(河北大學(xué)生命科學(xué)學(xué)院,河北保定 071002)

海南島云斑蛛屬1新種(蜘蛛目:園蛛科)

韓廣欣,張鋒,朱明生

(河北大學(xué)生命科學(xué)學(xué)院,河北保定 071002)

記述了中國(guó)海南島云斑蛛屬1新種,雙斑云斑蛛Cyrtophorabimaculatan.sp.模式標(biāo)本保存于河北大學(xué)博物館.文中測(cè)量單位:mm.

蜘蛛目;園蛛科;云斑蛛屬;新種;海南島;中國(guó)

迄今為止,園蛛科A raneidae已記述167屬2 990種,中國(guó)已報(bào)道41屬338種[1].該科為小到大型蜘蛛,全球性分布.Simon于1864年建立園蛛科云斑蛛屬.目前,本屬共包括47種,其中10種分布于中國(guó)[1].

云斑蛛屬雌雄個(gè)體差異很大,存在巨雌或倭雄現(xiàn)象.本屬背甲頭區(qū)寬,腹部一般具有1對(duì)或多對(duì)突起,有些種類后部具分叉.云斑蛛屬分布于溫暖地區(qū),美洲分布1種[2].

筆者在鏡檢海南島園蛛科標(biāo)本的過(guò)程中,發(fā)現(xiàn)了云斑蛛屬1新種,即雙斑云斑蛛Cyrtophorabimaculatan.sp.此前,海南島僅報(bào)道1種:海南云斑蛛CyrtophorahainanensisYin et al,1990.現(xiàn)將本新種加以描述和圖示.

Cy rtophora Simon,1864

模式種:桔云斑蛛Cyrtophoracitricola(Fo rssk?l,1775).

雙斑云斑蛛,新種Cyrtophorabimaculatan.sp.(圖1-3).

正模1♂,副模2♀,海南島吊羅山自然保護(hù)區(qū)(18.729°N,109.864°E),2009年6月7日,韓廣欣等采.

詞源學(xué):拉丁語(yǔ)“bimaculata”意為“雙斑”,指本種雌雄腹部2種不同的顏色.

鑒別特征:本新種與云斑蛛屬其他種的區(qū)別在于本新種雄蛛觸肢器插入器長(zhǎng),引導(dǎo)器呈長(zhǎng)方形薄片狀,頂突三角形具橫紋;雌蛛外雌器中板心形.

描述:雄蛛,體長(zhǎng)3.36.頭胸部長(zhǎng)1.48,寬1.36;腹部長(zhǎng)1.88,寬1.36.頭胸部深褐色,頸溝褐色,放射溝不明顯.中窩淺,縱向.頭區(qū)向前凸出.額高大于AM E直徑的2倍.前眼列后曲,后眼列幾乎平直.眼的測(cè)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;中眼域長(zhǎng)稍大于寬(0.43∶0.38),前邊稍大于后邊(0.41∶0.35).顎葉、下唇和胸板深褐色.螯肢黃褐色,前齒堤具4齒,第1齒和第3齒較大,后齒堤具2齒.步足式:1243.步足測(cè)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).腹部背面觀卵圓形,長(zhǎng)大于寬,深褐色,散布有灰色斑點(diǎn),前方具有1對(duì)白色的突起;腹面灰色具有1對(duì)白色條紋.舌狀體大.紡器褐色.觸肢器中突末端呈鉤狀;插入器長(zhǎng);引導(dǎo)器呈長(zhǎng)方形薄片狀;頂突三角形具橫紋(圖1 e-f;圖2 f-g).

雌蛛,體長(zhǎng)20.53.頭胸部長(zhǎng)7.88,寬6.55;腹部長(zhǎng)12.65,寬8.21.頭胸部黃色.中窩形成1個(gè)凹陷.額高大于AM E直徑.前眼列后曲,后眼列幾乎平直.眼的測(cè)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;中眼域長(zhǎng)與寬幾乎相等(0.87∶0.83),前邊稍大于后邊(0.85∶0.81).顎葉、下唇和胸板深褐色.螯肢橙黃色,粗壯,前、后齒堤各具4齒.步足黃褐色,散布有黑色素,步足上著生有剛毛.步足式:1243.步足測(cè)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).腹部長(zhǎng)大于寬,前部具有1對(duì)黑-白色突起,后部具有2塊大的黑斑.外雌器中板背面觀呈心形;納精囊長(zhǎng)卵圓形;受精管短(圖1 b-d;圖2 b-d).

體長(zhǎng)變化:雄蛛(n=1)3.36;雌蛛(n=2)20.53～25.11.

分布:中國(guó)(海南島)(圖3).

圖1 雙斑云斑蛛,新種Cy rtophora bimaculata n.sp.

圖2 雙斑云斑蛛,新種Cy rtophora bimaculata n.sp.

圖3 雙斑云斑蛛,新種Cy rtophora bimaculata n.sp.模式標(biāo)本產(chǎn)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 rssk?l,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).

致謝:衷心感謝張超、郭勝濤和張曉曉協(xié)助采集海南島蜘蛛標(biāo)本.

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(責(zé)任編輯:梁俊紅)

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

科技部基金資助項(xiàng)目(2006FY110500-3)

韓廣欣(1981—),女,河北藁城人,河北大學(xué)在讀博士研究生.

張鋒(1971—),男,河北蔚縣人,河北大學(xué)教授,主要從事蛛形動(dòng)物學(xué)研究.