长白山地区囊螨科二新种(蜱螨目:囊螨科)

TWO NEW SPECIES OF ASCIDAE (ACARINA) FROM CHANGBAI MOUNTAIN

我们在长白山采到囊螨科(Ascidae)2新种,它们分隶于滑绥螨属Leioseius Berlese,1918及手绥螨属Cheiroseius Berlese,1916,现记述如下。标本测量均以微米计。模式标本保存于沈阳农业大学植保系。1.长白滑绥螨Leioseius

Two new species of Ascidae from Changbai Mountain, China, are described; one of them belongs to the genus Leioseius, the other to the genus Cheiroseius, The type specimens are deposited in Shenyang Agricultural University, Shenyang, Liaoning Province.1. Leioseins changbaiensis sp. nov. Fig. 1This species resembles Leioseius naglit schi Karg, 1965, but may be easily differentiated by the following features: Ventri-anal shield bearing 3 setal pairs (vs. 4 setal pairs); different shape of genital shield; 4 narrow platelets leaning against the posterior margin of the genital shield (vs. more broad and seperated from the shield).Holotype (?) , paratypes 2 (?) (?), collected under the bark of a tree from Changbai Mountain, Jilin Province, 27. Ⅸ. 1986, paratype 1 (?) collected from the soil of Dongling Park, Shenyang, Liaoning Province.2. Cheiroseins sinicus sp. nov. Fig.2This species is similar to Cheiroseius cassiteridium (Evans & Hyatt, 1960), but can be distinguished from the latter by the following features: Each of the dorsal setae is borne on a basal tuberance; the sternal shied is reticulate centrally; the interscutal membrane between the genital and ventri-anal shields bears ten platelets. Behind the anal opening is an arc-shaped thickening.Holotype (?) , paratype (?) , collected from the soil near a hot spring, Changbai Mountain, Jilin Province, 27. Ⅸ. 1986.