米小其,王成
(銅仁學(xué)院生物與農(nóng)林工程學(xué)院,貴州銅仁554300)
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中國(guó)云南翹蛛屬一新種(蜘蛛目:跳蛛科)
米小其*,王成
(銅仁學(xué)院生物與農(nóng)林工程學(xué)院,貴州銅仁554300)
記述了跳蛛科Salticidae翹蛛屬Irura一新種——無突翹蛛Irurauniprocessasp.nov.。提供了該種的鑒別特征的彩圖與點(diǎn)線圖,及其與近似種的比較特征。模式標(biāo)本保存于銅仁學(xué)院標(biāo)本館。
分類學(xué);跳蛛;翹蛛屬;新種;無量山
作者在整理采自云南無量山的跳蛛標(biāo)本時(shí),發(fā)現(xiàn)翹蛛屬一新種,將其命名為無突翹蛛Irurauniprocessasp.nov.。本文中所有的測(cè)量單位均為mm。步足的測(cè)量如下:全長(zhǎng)(腿節(jié),膝節(jié)+脛節(jié),后跗節(jié),跗節(jié))。
翹蛛屬IruraPeckham & Peckham, 1901
頭胸部前部平坦,梯形或近方形,后端收縮并急劇傾斜;腹部背面有大的桔紅色表皮內(nèi)突(部分雄性種類不明顯);雄性觸肢器的跗舟有一長(zhǎng)的后側(cè)突,插入器細(xì)長(zhǎng),跗舟與脛節(jié)關(guān)聯(lián)處有一膜狀結(jié)構(gòu);雌蛛外雌器外壁弱角質(zhì)化,半透明,交媾管呈“S”形扭曲。納精囊有的具2室,有的分室不明顯。
無突翹蛛,新種Irurauniprocessasp.nov.(圖版Ⅰ,圖版Ⅱ)
正模♂,云南省南澗縣無量山鎮(zhèn)靈寶山國(guó)家森林公園(24.763 1°N,100.502 8°E,2 285 m),2015
圖版Ⅰ 無突翹蛛, 新種
A.雄性外形, 背面觀 Male body, dorsal view; B.雌性外形, 背面觀 Female boby, dorsal view; C.雄性觸肢器, 腹面觀 Male palp, ventral view; D.雄性觸肢器, 后側(cè)面觀 Male palp, retrolateral view; E.雄性觸肢器,背面觀 Male palp, dorsal view; F.外雌器,腹面觀 Epigyne, ventral view; G.陰門, 背面觀 Vulva, dorsal view; 比例尺Scale: A~B=0.5 mm, C~G=0.1 mm.
圖版Ⅱ 無突翹蛛, 新種
a.雄性觸肢器, 腹面觀 Male palp, ventral view; b.雄性觸肢器, 后側(cè)面觀 Male palp, retrolateral view; c.雄性左側(cè)螯肢, 后面觀 Left chelicerae of male, posterior view; d.外雌器, 腹面觀 Epigyne, ventral view; e.陰門, 背面觀 Vulva, dorsal view; CO.交媾孔 copulatory openings,E.插入器 embolus,F(xiàn)D.受精管 fertilization ducts,H.垂兜 hood,O.突 outgrowth,S.納精囊 spermathecae; 比例尺Scale: a~e=0.1 mm.
年8月12日,王成、廖昭林、羅鵬、劉高滔采(WC-20150812)。副模:2♀1♂,采集信息同正模;5♂,云南省南澗縣寶華鎮(zhèn)老竹村石洞寺(24.855 1°N,100.495 0°E,1 781 m),2015年8月13日,王成、廖昭林、羅鵬、劉高滔采(WC-20150813)。
詞源學(xué):新種種名源自拉丁詞“uniprocessa”,意為“無突起的”,指本新種觸肢器的脛節(jié)無突起。
鑒別特征:新種雄性與雙齒翹蛛I.bidenticulataGuo,Zhang & Zhu,2011相似,區(qū)別在于:1)雄性觸肢器脛節(jié)無突起,而后者脛節(jié)突有一膜質(zhì)的后側(cè)突;2)觸肢器生殖球超出跗舟的后側(cè)面邊緣,而后者的生殖球完全位于跗舟腔窩內(nèi)。新種雌性的外雌器背面觀和鉤突翹蛛I.hamatapophysis(Peng & Yin,1991)非常相似,區(qū)別在于:1)前者的外雌器有1對(duì)垂兜,而后者沒有垂兜;2)前者的交媾孔位于外雌器的中后部,而后者緊貼生殖溝;3)前者的交媾管不明顯,而后者的交媾管非常明顯。
描述:雄性體長(zhǎng)2.86,頭胸部長(zhǎng)1.36,寬1.32;腹部長(zhǎng)1.44,寬1.38。背甲(圖版Ⅰ:A)紅棕色,被有白色和棕色細(xì)毛,其前中部有1塊不規(guī)則的黑斑,后部具有1對(duì)傾斜的放射紋。中窩和頸溝不明顯。眼徑與眼間距:前中眼 0.34,前側(cè)眼 0.20,后側(cè)眼 0.16;前眼列寬1.12,后眼列寬1.28,眼域長(zhǎng)0.78。螯肢(圖版Ⅱ:c)紅棕色,前齒堤2齒,后齒堤1分叉板齒。顎葉棕黃色,長(zhǎng)大于寬,其端部?jī)?nèi)側(cè)具毛簇;下唇黑棕色,其端部顏色淺,具數(shù)根長(zhǎng)毛;胸板近心形。第一步足跗節(jié)黃色,其余部分紅棕色;第二步足后跗節(jié)、跗節(jié)黃色,其余部分灰棕色;第三、四步足腿節(jié)和膝節(jié)灰棕色,其余黃色。刺式:脛節(jié):第一步足腹面1-2-2, 第二步足腹面0-1-0; 后跗節(jié):第一步足腹面2-0-2, 第二步足腹面1-0-0。 步足測(cè)量:Ⅰ 4.05 (1.25,1.80,0.55,0.45),Ⅱ 2.60 (0.90,0.95,0.40,0.35),Ⅲ 2.45(0.80,0.90,0.40,0.35),Ⅳ 2.50 (0.80,0.90,0.45,0.35)。足式:1243。腹部背面(圖版Ⅰ:A)卵圓形,灰棕色,前中部具有3對(duì)肌斑,中、后部?jī)蓚?cè)各有1對(duì)被有白色細(xì)毛的黃色斑塊,腹部末端具有數(shù)條橫向的黑色條紋。腹部腹面灰棕色,中部有1對(duì)由灰白色點(diǎn)組成的斜線斑。
觸肢器(圖版Ⅰ:C~E,圖版Ⅱ:a~b):脛節(jié)長(zhǎng)稍大于寬,無脛節(jié)突,具數(shù)根長(zhǎng)毛;跗舟突相對(duì)較為細(xì)長(zhǎng),后側(cè)面觀呈劍狀,背面觀末端指向5點(diǎn)鐘方向;插入器細(xì)長(zhǎng),起始于9點(diǎn)鐘位置,約是跗舟長(zhǎng)度的一半;貯精管明顯,沿生殖球后側(cè)面環(huán)繞。
雌性體長(zhǎng)3.12;頭胸部長(zhǎng)1.46,寬1.36;腹部長(zhǎng)1.70,寬1.48。背甲(圖版Ⅰ:B)紅棕色,其中部具有和雄性相似的黑色斑塊,眼基黑色。中窩和頸溝不明顯。眼徑與眼間距:前中眼0.32,前側(cè)眼0.21,后側(cè)眼0.18;前眼列寬1.10,后眼列寬1.26,眼域長(zhǎng)0.72。螯肢、顎葉、下唇和胸板都與雄性相似,但顏色更深。刺式:脛節(jié):第一步足腹面1-2-2,第二步足腹面1-1-0;后跗節(jié):第一步足腹面2-0-2,第二步足腹面2-0-0。步足測(cè)量:Ⅰ 3.35(1.05,1.45,0.45,0.40),Ⅱ 2.30(0.80,0.85,0.35,0.30),Ⅲ 1.95(0.65,0.65,0.35,0.30),Ⅳ 3.30(1.05,1.40,0.45,0.40)。 足式:1423。腹部長(zhǎng)卵圓形(圖版Ⅰ:B),背面前部中間具1縱向的黃色寬帶,前中部具有3對(duì)肌斑,中、后部?jī)蓚?cè)各有1對(duì)由白色細(xì)毛組成的白色斑塊,末端具數(shù)條橫向條紋。腹部腹面和雄性相似。
外雌器及陰門(圖版Ⅰ:F~G,圖版Ⅱ:d~e):外雌器中后部具有1對(duì)相互靠近的垂兜;交媾孔小,位于垂兜兩側(cè);交媾管不明顯;納精囊分2室,前面1對(duì)成梨形,后部1對(duì)兩端加寬。
分布:中國(guó)(云南)。
致謝:云南無量山國(guó)家級(jí)自然保護(hù)區(qū)南澗管理局為采集標(biāo)本提供方便,銅仁學(xué)院廖昭林、羅鵬、劉高滔等參與標(biāo)本采集,特此致謝。
彭賢錦, 謝莉萍, 肖小芹, 等. 1993. 中國(guó)跳蛛[M]. 長(zhǎng)沙: 湖南師范大學(xué)出版社: 97-108.
彭賢錦, 尹長(zhǎng)民. 1991. 中國(guó)金希蛛屬五新種(蜘蛛目: 跳蛛科)[J]. 動(dòng)物分類學(xué)報(bào), 16(1): 35-47.
Guo JY, Zhang F, Zhu MS. 2011. Two new species of the genusIruraPeckham & Peckham, 1901 (Araneae: Salticidae) from Hainan Island, China[J]. Acta Arachnologica, Tokyo, 60: 89-91.
Peckham GW, Peckham EG. 1901.Pellenesand some other genera of the family Attidae[J]. Bulletin of the Wisconsin Natural History Society (N.S.), 1: 195-233.
Thorell T. 1891. Spindlar fr?n Nikobarerna och andra delar af s?dra Asien[J]. Bihang till Kongliga Svenska Vetenskaps-Akademiens Handlingar, 24(2): 1-149.
World Spider Catalog. 2016. World Spider Catalog. Natural History Museum Bern[DB/OL]. [2016-01-06]. http://wsc.nmbe.ch, version 17.0.
A New Species ofIruraPeckham & Peckham, 1901(Araneae: Salticidae) from Yunnan Province, China
MI Xiaoqi*, WANG Cheng
(College of Biological and Agricultural and Forestry Engineering, Tongren University, Tongren, Guizhou Province 554300, China)
A new species,Irurauniprocessasp.nov., is described from the Wuliangshan Mountains, Yunnan province.Color photographs and plot drawings of diagnostic characters and comparison with the related species are given.The specimens are deposited in Museum of Tongren University (MTU).Irurauniprocessasp.nov.(Plates Ⅰ,Ⅱ)Holotype:♂, Lingbaoshan National Forest Park (24.763 1°N, 100.502 8°E, 2 285 m), Wuliangshan town, Nanjian county, Yunnan province, China, 12 August 2015, collected by C.Wang, Z.L.Liao, P.Luo and G.T.Liu (WC-20150812).Paratypes: 1♂2♀, same data as holotype.5♂, Shidongsi (24.855 1°N, 100.495 0°E, 1 781 m), Laozhu village, Baohua town, Nanjian county, Yunnan province, China, 13 August 2015, collected by C.Wang, Z.L.Liao, P.Luo and G.T.Liu (WC-20150813).Etymology: The specific name derives from the Latin word “uniprocessa” (without apophysis), and refers to the male palp without tibial apophysis.Adjective.Diagnosis: The male of this new species is similar toI.bidenticulataGuo, Zhang & Zhu, 2011, but can be distinguished from the latter by: 1) the palpal tibia without apophysis but a membranous retrolateral apophysis inI.bidenticulata; 2) the palpal bulb over the retrolateral margin of cymbium but located in alveolus completely inI.bidenticulata.The female is similar toI.hamatapophysis(Peng & Yin, 1991), but can be distinguished from the latter by: 1) the epigyne with a pair of hoods but without hood inI.hamatapophysis; 2) the copulatory openings located at median-posteriorly but closed to genital groove inI.hamatapophysis; 3) the copulatory ducts indistinct but distinct inI.hamatapophysis.Genitals: Male palp of the new species without retrolateral apophysis; cymbial outgrowth relatively slender, sword-like in retrolateral view; embolus slender, originated at 9 o’clock, and about half the length of the cymbium.Epigyne with a pair of hoods closed to each other situated median-posteriorly; copulatory openings small, situated the bilateral of hoods; copulatory ducts indistinct; spermathecae divided into 2 chambers.
taxonomy; jumping spider;Irura; new species; Wuliangshan Mountains
2016-01-06 接受日期:2016-03-30 基金項(xiàng)目:國(guó)家自然科學(xué)基金項(xiàng)目(31301861);貴州省科學(xué)技術(shù)基金項(xiàng)目(J[2012]2313)
米小其(1981—),男,博士,研究方向:蜘蛛分類學(xué)
*通信作者Corresponding author,E-mail:mixiaoqi1018@126.com
10.11984/j.issn.1000-7083.20160008
Q959.226
A
1000-7083(2016)03-400-04