蛇刺螨属在中国的发现并记述1新种（蜱螨亚纲：中气门目：巨刺螨科）

Discovery of the genus Ophionyssus Megnin in China and description of a new species （Acari： Mesostigmata： Macronyssidae）

记述蛇刺螨属1新种：鞍胸蛇刺螨Ophionyssussellisternatis sp．nov．，该属在中国为首次记录。

A new species of the genus Ophionyssus M6gnin is described in the present paper.The genus is recorded from China for the first time. Ophionyssus seUisternalis sp. nov. （Figs. 1-10） Female. Length of idiosoma 763 μm, width 495 μm. Dorsum covered by two dorsal shield. Anterior dorsal shield large, 538 μm long and 323 μm wide, with 12 pairs of setae. Posterior dorsal shield very small, 65 μm long and 65 pum wide, without setae. Dorsal cuticle setae about 40 pairs. Sternal shield saddle-shaped, with 2 pairs of sternal setae and 2 pairs of pores, St3 lying on cuticle behind the shield, MSt lacking. Genito-ventral shield tapering, Vll situated on cuticle beside the shield. Anal shield pear-like, 3 perianal setae subequal to anus in length. Peritreme short, reaching to anterion part of coxa III anteriorly. Ventral cuticle setae about 25 pairs. Chela scissors-shaped., Male. Length of idiosoma 602 μm, width 323 μm. Holodorsal shield 581μm long and 301 p,m wide, setae short. Sterno-genital shield narrow, 3 pairs of sternal setae and 2 pairs of pores situated on the shield, metasternal setae lacking, genital setae on cuticle off the shield. Anal shield pear-like, Ad lying at level of posterior margin of anus, both Ad and PA subequal to anus in length. Peritreme reaching to anterior part of coxa III anteriorly. Spermatodactyl of chela club-shaped. The new species is similar to Ophionyssus eremiadis Naglov et Naglova, 1960 and Ophionyssus mabuyae Till, 1957, but in female of the new species anterior dorsal shield longer, with 12 pairs of setae on the shield, setae length subequal; while anterior dorsal shield of O. eremiadis with 9 pairs of setae, F： distinctly longer than other setae; anterior dorsal shield of O. mabuyae shorter, with 8 pairs of setae. Holotype , ex cave of lizard, from Pingluo County （38° 55＇ N, 106° 32＇ E）,Ningxia Hui Autonomous Region, 17 Sep. 2009. Paratypes 1 , same habitat and locality as holotype,10 Oct. 2009. 9 protonymphs, same habitat and locality as holotype, 17 Apr. 2010 to 8 May 2010. Type specimens are deposited in the Entomology Gallery, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing. The new species is named after sternal shield （sternalis） saddle-shaped （selli-）.