纤恙螨属一新种(蜱螨亚纲,恙螨科)  

A NEW SPECIES OF THE GENUS LEPTOTROMBIDIUM FROM QINGHAI,CHINA(ACARI,TROMBICULIDAE)

作　　者：马英[1] 杨锡正[1] 陈洪舰[1] 

机构地区：[1]青海省地方病预防控制所,西宁811602

出　　处：《动物分类学报》2003年第4期662-664,共3页Acta Zootaxonomica Sinica

摘　　要：记述纤恙螨属LeptotrombidiumNagayoetal.,1916 1新种 ,即尖扎纤恙螨Leptotrombidium (L .)jianzhaensissp .nov .,标本采自青海省黄南州尖扎县坎布拉地区红耳鼠兔Ochotonaerythrotis体上。模式标本存放在青海省地方病预防控制所。文内量度单位均为 μm。A new species of the genus Leptotrombidium is described and illustrated. All measurements are given in micrometers. The type specimen is deposited in the Qinghai Provincial Institute for Endemic Disease Prevention and Control.Leptotrombidium (L.) jianzhaensis sp. nov.(Figs.1-4)Body orange when alive, engorged 148 long, 95 wide. SIF=7B-B-3-2111-0000, fp=N.N.NNN. Scutum nearly rectangle shaped, anterior margin almost straight with middle slightly convex, slightly concave in the middle of posterior margin. Proximal sensillae smooth with 7 fine branches on distal 2/3. PW/SD=1.9, AM=PL>AL, SB/PLs. Eyes 2+2, Oa≈Op. Dorsal setae 62 in number, arranged as 4.14.18.14.8.4. Stenal setae 2.2. Ventral setae with 70 (56a14). NDV=132. Coxal setae 1.1.1. LST:Ta 22, ta 8, Ga 4, Fa 6. Tm 16, tm 6, Gm 3, Fm 6. Tp 15, tp 6, Gp 3, Fp 5. Length of legs: Ⅰ=364,Ⅱ=328, Ⅲ=402, Ip=1094. Holotype, larva collected off Ochotona erythrotis,8 Aug. 2001, Kanbula Region of Jianzha County (35°55′N, 102°E), Huangnan State, Qinghai Province. The new species resembles L.(L.) yunnanense Yu et al.,1980, but can be separated from the latter by PW/SD=1.9, PW≈2.7AP, AM=PL>AL, PS<AP, SB/PLs. Proximal sensillae base is smooth and has sparse branches on 2/3 distally.

关 键 词：蝉螨亚纲 恙螨科 纤恙螨属 新种 

分 类 号：Q969[生物学—昆虫学]