毛绥螨属新种记述和已知种再描述与更正(蜱螨亚纲:革螨股:裂胸螨科)  

Descriptions of New Species and Redescription and Correction of Known Species of the Genus Lasioseius (Acari:Gamasina:Aceosejidae)

作　　者：马立名[1] 

机构地区：[1]中国鼠疫布氏菌病预防控制基地,白城市137000

出　　处：《蛛形学报》2005年第1期1-6,共6页Acta Arachnologica Sinica

摘　　要：记述毛绥螨属2新种:小板毛绥螨Lasioseiusplateculussp.nov.和黄河毛绥螨Lasioseiushuangheensissp.nov.。同时对王氏毛绥螨LasioseiuswangiMa,1988进行再描述,并对廖氏毛绥螨LasioseiusliaohaorongaeMa,1996进行更正。1 Lasioseius plateculuc sp.nov.(Figs.1-5)♀. Length 483 μm, width 402 μm. Dorsal shield reduced, 379 μm long and 184 μm wide, bearing 31 pairs of setae,slightly broader, but F_2, Sc and S_8 minute. Dorsal cuticle setae 4 pairs, as in dorsal shield setae. Sternal shield concave at middle of anterior margin, sternal setae 3 pairs and pores 2 pairs.. Metasternal shields 1 pair, MSt and the 3rd pair of pores on the shields. Posterior part of genital shield expanded, with 1 pair of setae.Ventro-anal shield small, triangular, with convex anterior margin, preanal setae 4 pairs. Ad laying at level of middle of anus, slightly shorter than anus, PA longer. 2 pairs of club-like sclerites situated between genital and ventro-anal shields.Ventral cuticle setae 3 pairs,last pair slightly longer. Metapodal shields 2 pairs,anterior pair club-like, posterior pair wedge-shaped. Peritreme reaching interior to F_1.Movable digit of chela tridentate, fixed digit with a row of small denticles. The new species is allied to Lasioseius dendroctoni Chant, 1963, but in the new species dorsal shield narrow, with 31 pairs of setae, presternal region without platelet, St_1 on sternal shield, ventro-anal shield narrower; in the latter species dorsal shield broad, with 36 pairs of setae, presternal region with 2 pairs of platelets, St_1 on jugularia, ventro-anal shield broader. Holotype ♀, from humus soil under tree, in Lushan Mountain (29°32′ N,115°55′ E), Jiangxi Province, Aug. 30, 1983. Type specimens is deposited in the Chinese Base for control and Prevention of Plague and Brucellosis, Baicheng City, Jilin Province. 2 Lasioseius huangheensis sp.nov.(Figs.6-9)♀. Length 460 μm, width 276.Dorsal shield 414 μm long and 184 μm. wide, bearing 36 pairs of setae, majority of which broader, 3-tined, setae of posterior part as willow leaf in shape, but F_2, ET_2 and S_8 minute. Sternal shield with slightly concave posterior margin, St_1 situated on presternal region, St_2, St_3 and 2 pairs of pores on the shield. MSt on metasternal sh

关 键 词：毛绥螨属 裂胸螨科 蜱螨亚纲 新种记述 革螨股 NOV sp. Ma 

分 类 号：Q969[生物学—昆虫学]