摘要
本文报道裂胸螨科中国１新记录属：似虫穴螨属ＺｅｒｃｏｎｏｐｓｉｓＨｕｌ，１９１８，并记述２新种：黑龙江似虫穴螨Ｚ．ｈｅｉｌｏｎｇｊｉａｎｇｅｎｓｉｓ，ｓｐ．ｎｏｖ．和伊春似虫穴螨Ｚ．ｙｉｃｈｕｎｅｎｓｉｓ，ｓｐ．ｎｏｖ．。
The present paper reports two new species of Zerconopsis Hull, 1918, a genus firstly recorded in China. All the type specimens are deposited in the National Base of Plague and Brucellosis Control, Baicheng City, Jilin Province. 1. Zerconopsis heilongjiangensis, sp. nov. (Figs. 1～8) ♀. Body yellow, oval, 643 μm long × 460 μm wide. Dorsal shield (643 μm long × 402 μm wide) with lateral incision, covered with distinct reticulated pattern and wrinkles on surface. Anterior region with 18 pairs of setae of which one pair is paddle like, posterior region with 14 pairs of setae of which two pairs are paddle like, the remainder simple. Tritosternum with a narrow base and pilose laciniae. Anterior and posterior margins of sternal shield concave, with 3 pairs of setae on the shield. Metasternal setae situated on cuticle. Lateral margins of genital shield concave, genital setae off the shield. Ventro anal shield reticulated on anterior half and bearing 6 pairs of preanal setae. Ad lying at level of posterior margin of anus, both Ad and PA subequal to anus in length. Between genital and ventro anal shields lie 3 pairs of platelets. Metapodalia 2 pairs, of which outer shield subtriangular. Movable digit of chela with 2 teeth. Anterior palptrochanter seta and anterior and interior gnathosomal setae long, whip shaped. ♂. Body 494 μm long × 299 μm wide. Dorsal shield entire, covered all dorsum. With 18 pairs of setae on anterior region and 17 pairs on posterior region, all setae simple except 3 pairs of paddle like setae. Sterno genital shield with 5 pairs of setae, ventro anal shield with 8 pairs of preanal setae and 3 perianal setae. Tectum three pronged. Chela with short spermatophoral process. The new species near to Zerconopsis labradorensis Evans et Hyatt, 1960, but in the new species posterior margin of sternal shield and lateral margins of genital shield concave, lateral incision of dorsal shield deep; in the latter species posterior margin of sternal shield and la teral margins of genital shield straight, lateral incision of dorsal shield shallow. Holotype ♀, paratypes 1♀ and 1♂,from forest soils, in Liangshui Natural preserve (47°10′N, 128°53′E), Yichun City, Heilongjiang Province, VIII-1995. 2. Zerconopsis yichunensis, sp. nov. (Figs. 9～13) ♀. Body yellow, oval, 563 μm long × 345 μm wide. Dorsal shield (563 μm long × 299 μm wide) with lateral incision and rough surface, bearing 17 pairs of setae on anterior region and 14 pairs on posterior region, of which 3 pairs of setae paddle like, the remainder simple. Tritosternum with a narrow base and pilose laciniae. Sternal shield with concave anterior and posterior margins, bearing 3 pairs of setae. Lateral margins of genital shield concave. Both metasternal and genital setae situated on cuticle. Ventro anal shield with reticulated pattern on anterior half, preanal setae 5 pairs. Ad lying at level of posterior margin of anus, both Ad and PA subequal to anus in length. Venter with 3 pairs of platelets between genital and ventro anal shields. Metapodalia 2 pairs, of which outer shield narrow. Tectum three pronged. Movable digit of chela with 2 teeth. Anterior palp trochanter seta long whip like, anterior and interior gnathosomal setae also long whip like. The new species near to Zerconopsis muestairi (Schweizer, 1949), but in the new species tritosternum distant from sternal shield, lateral margins of genital shield concave, genital setae off the shield, outer metapodalia narrow; in the latter species tritosternum close to sternal shield, lateral margins of genital shield convex, genital setae situated on the shield, outer metapodalia broader. Holotype ♀, paratype 1♀, from forest soils, in Liangshui Natural preserve (47°10′N, 128°53′E), Yichun City, Heilongjinag Province, VIII-1996.
