中国皮刺螨属二新种和一新纪录(蜱螨亚纲:皮刺螨科)

NEW SPECIES AND NEW RECORD OF DERMANYSSUS FROM CHINA (ACARI: DERMANYSSIDAE)

本文绘图描述短沟皮刺螨Dermanyssus brevirivulus sp.nov.和五台皮刺螨D.wutaiensis sp.nov.二新种,并报道在我国首次纪录的美洲皮刺螨D.americanus Ewing,1922。模式标本均采自山西省的鸟类,存放在贵阳医学院及山西医学院。文末并附有国内已知5种皮刺螨的检索表。

In this paper 2 new species and one new record of the genus Dermanyssus Duges, 1834 from China are described and figured. A key to Chinese species of Dermanyssus is appendedDermanyssus americanus Ewing, 1822The first record in China. Specimens: 8 females. 3 were collected off Emberiza cioides Braunt on Feb. 2. 1983, from Yushe County (112°56'E, 37°10'N) Shanxi Province; 5 were collected in the nest of Passer moruanus (Linne), on July. 14. 1975, from Xingzhou County (112°45'E, 38°27' N) Shanxi Province. Emberiza cioides Braunt is a new record of host.Dermanyssus brevirivulus sp. nor. (figs. 1-3)Holotype ♀ and paratypes 29 ♀♀ we're collected off Galeride cristata leautungensis (Swin-hoe), in May 1983, from Taiyuan City (37°54'N, 112°29'E) Shanxi Province. Holotype and 2 paratypes are deposited in the Department of Parasitology, Guiyang Medical College, the other paratypes deposited in the Department of Parasitology, Shanxi Medical College.This new species resembles Dermanyssus brvis Ewing, 1936, but distingushed from the latter by: dorsal plate bearing 12 pairs of setae, F1 on the plate; dorsal plate without 2 pairs of oval, light spots near the posterior margin; posterior margin of sternal plate rather flat and posterior end of genito-ventral plate rather pointed; and postanal seta lacking.Dermanyssus wutaiensis sp. nov. (figs. 4-5)Holotype ♀ and paratypes 2 ♀♀ were collected from a nest of Passer montanus (Linne), in June. 1978, from Wutai County (39°02'N, 113°35'E) Shanxi Province. Holotype and one paratype are deposited in the Department of Parasitology, Guiyang Medical College, another paratype deposited in the Department of Parasitology, Shanxi Medical College.This new species is similar to Dermanyssus transvaalensis Evans et Till, 1962, but with fo-flowing distinguish characters: dorsal plate with anterior margin rather flat, lateral margin expanded behind the level of D5, and posterior end pointed; Fs off the dorsal plate and D7 on the plate; all the dorsal setae subequal in length; 2 pairs of platelets behind the dorsal plate, one anterio-Iateral and the other posterio-Iateral to D8; the largest pair of metapodal plates behind coxa Ⅳ; length of PA about 2/3 as that of Ad.