革赛螨属一新种(蜱螨亚纲:革螨股:胭螨科)  

A New Species of the Genus Gamasellus(Acari: Gamasina: Rhodacaridae)

作　　者：马立名 

机构地区：[1]全国鼠疫布氏菌病防治基地,吉林白城137000

出　　处：《Entomotaxonomia》2003年第4期313-317,共5页昆虫分类学报（英文）

摘　　要：记述革赛螨属1新种:敦化革赛螨Gamasellusdunhuaensis,sp.nov.,模式标本保存在吉林省白城市全国鼠疫布氏菌病防治基地。This paper reports a new species of the genus Gamasellus. Gamasellus dunhuaensis, sp. nov. (Figs.1~17) ♀. Length of idiosoma average 477μm, width av. 290μm. Anterior dorsal shield bears 21 pairs of setae, of which F1, D1, D3 and M2 plumose, remains smooth and arc-shaped. M3 on cuticle lateral to the shield. Posterior dorsal shield with 18 pairs of setae, of which 5 pairs are plumose. Tritosternum with long narrow base. Presternal shields composed of 3 pairs of platelets. Sternal shield with 4 pairs of setae. Genital shield with 1 pair of setae. Ventro-anal shield large, preanal setae 6 pairs, of which 1 pair plumose. Ad situated at level of middle of anus, slightly shorter than anus, PA longer than Ad. Peritreme reaches to median part of coxa I. Tectum trispinate, median one much longer than the laterals, with several minute spines on both sides. Movable digit of chela trident and fixed digit with 6 teeth. ♂. Length of idiosome 471μm, width 299μm. Dorsum similar to female. Sterno-genital shield bears 5 pairs of simple setae. Ventro-anal shield with 6 or 7 pairs of preanal setae and 3 perianal setae, of which one pair of preanal setae plumose. Movable digit of chela unidentate, with long narrow spermatodactyl, fixed digit with 2 large teeth and a row of minute teeth. Leg II with a heavy cone-like spur and a small spur on femur, two finger-like spurs on genu and a finger-like spur on tibia. The new species is similar to Gamasellus montanus (Willmann, 1936), but different from the latter in idiosoma small, posterior dorsal shield of adult with 5 pairs of plumose setae, ventro-anal shield narrower; however in the latter idiosoma large, posterior dorsal shield with 4 pairs of plumose setae, ventro-anal shield broader. Holotype ♀, paratypes 3♀♀, 2♂♂ and 2 deutonymphs, from forest soils, in Dunhua County (43?1碞, 128?3碋), Jilin Province, Ⅷ-1990. Type specimens are deposited in the National Base of Plague and Brucellosis Control, Baicheng City, Jilin Province.

关 键 词：蜱螨亚纲 革螨股 胭螨科 革赛螨属 新种 中国 

分 类 号：Q969[生物学—昆虫学]