西藏囊螨属1新种（蜱螨亚纲：中气门目：囊螨科）  

A new species of the genus Asca from Xizang, China （Acari： Mesostigmata： Ascidae）

作　　者：马立名[1] 林坚贞[2] 代万安[3] MA Li-Ming1, LIN Jian-Zhen2 , DAI Wan-An3(1. Chinese Base for Control and Prevention of Plague and Brucellosis, Baicheng City, Jilin Province 137000, P. R. China ; 2. Institute of Plant Protection, Fujian Academy of Agricultural Science, Fuzhou 350013, P. R. China; 3. Institute of Vegetable, Tibet Academy of Agricultural and Animal Husbandry, Lhaha City 850032, P. R. Chin)

机构地区：[1]中国鼠疫布氏菌病预防控制基地,吉林省白城市137000 [2]福建省农业科学院植物保护研究所,福州350013 [3]西藏自治区农牧科学院蔬菜研究所,拉萨850032

出　　处：《蛛形学报》2018年第1期31-33,共3页Acta Arachnologica Sinica

摘　　要：记述囊螨属1新种：花形囊螨Asca floraspermatheca sp．nov．A new species of the genus Asca is described in the present paper.Asca floraspermatheca sp. nov. （Fig. 1） Female. Length of idiosoma 296-341 （av. 318） μm, width 180-203 （av. 191）μm, margins of dorsal shields wave-like. Anterior dorsal shield with 17 pairs of setae, posterior dorsal shield with 14 pairs of setae, of which 1 pair of setae situated on post-lateral projections, all dorsal setae short, simple. Dorsal cuticle setae 11 pairs. Sternal shield with 3 pairs of setae. Metasternal setae on cuticle behind the shield. Genital shield with 1 pair of setae. Ventro-anal shield large, with 6 pairs of ventral setae and 3 perianal setae. Ad situated at level of middle of anus, both Ad and PA slightly shorter than anus. Cuticle between genital and ventro-anal shields with 2 pairs of setae. Metapodal shields 1 pair, subcircular. Peritreme reaching to anterior end of idiosoma and winding towards the back, moreover with longer posterior projection behind stigma. Spermatheca distinct, flower-shaped. Legs setae short, simple. Both the new species and Asca campanispermatheca Ma et Lin, 2015 can catch sight of spermatheca, but in the new species with 1 spermatheca, dorsal setae short, post-lateral projection large, bearing 1 seta, peritreme reaching to anterior end of idiosoma and winding towards the back; however in the latter species with 1 pair of spermatheca, dorsal setae longer, post-lateral projection very short, bearing 2 setae, peritreme only reaching to anterior end of idiosoma, not winding. Holotype ♀ , paratype 1 ♀ , ex bush, from Cuona County （28° N, 92° E）, Xizang Autonomous Region, 6 Aug. 2016. Paratypes 3♀♀, ex moss, from Linzhi County （29° 39′ N, 94° 21′ E）, Xizang Autonomous Region, 11 Aug. 2016. 1♀, ex lichen, from Yadong County （27° 30′ N, 88° 56′ E）, Xizang Autonomous Region, 7 Sep. 2016. Type specimens are deposited in the Institute of Plant Protection, Fujian Academy of Agricultural Science, Fuzhou. Name of the new species from ＂flora-＂ （flower�

关 键 词：蜱螨亚纲 中气门目 囊螨科 囊螨属 新种 

分 类 号：Q959.226[生物学—动物学]