楔形维螨和汤旺河维螨雌螨形态补充及若螨描述(蜱螨亚纲:革螨股:维螨科)

Complement to Morphology of Female and Descriptions of Nymphs in Veigaia cuneata and Veigaia tangwanghensis(Acari:Gamasina:Veigaiaidae)

本文补充楔形维螨VeigaiacuneataMa,1996和汤旺河维螨VeigaiatangwanghensisMaetYin,1999雌螨形态特征,并描述其若螨。

1 Veigaia cuneata Ma,1996(Figs.1-16)♀. Gnathosomal setae subequal in thickness.Medial prong of tectum slender, with some branches apically; lateral prongs short and broad, bifurcate. Movable digit of chela bidentate,fixed digit with 4 teeth. Presternal shields contracted medially.Punctiform organ with 11-16 pores, arranged in a row, or a few pores situated behind principal row, appeared 2 rows; inside of punctiform organ bearing one minute seta. Posterior corner of anal shield narrower, Ad subequal or slightly longer than anus. Metapodalia bacilliform or upward expanded. Deutonymph. Body oval,712 μm long and 437 μm wide. Anterior dorsal shield bearing 21 pairs of setae. Posterior dorsal shield semicircular, 10 pairs of setae on the shield. Presternal shields large, triangular. One row of pores in punctiform organ. Ad laying before posterior margin of anus.Medial prong of tectum slender, branched at the end, lateral prongs shorter and broader, bifurcate. Chela long and narrow,2 teeth on movable digit, 4 teeth on fixed digit. Protonymph. Body oval,517×310 μm.About 28 pairs of setae on dorsum. Venter with St_1-St_3,Ad, PA and about 5 pairs of ventral setae. Peritreme short. Parastigmal setae one pair. Examined specimens 6 ♀♀,4 deutonymphs and 1 protonymph, ex litter, from Baicheng City (45° 37′ N,122° 49′ E),Jilin Province, July 28, 1993. 2 Veigaia tangwanghensis Ma et Yin,1999(Figs.17-22)♀. In normal specimens lateral margins of ventral shield even, without concavities. Medial prong of tectum bifurcate and pilose. Protonymph. Body 333 μm long and 207 μm wide. Dorsal shield indistinct.Dorsal setae 28 pairs, M_2 of which the longest. Venter with 3 pairs of sternal setae, 5 pairs of ventral setae, 1 pair of parastigmal setae and 3 perianal setae. Peritreme short. Medial prong of tectum Y-shaped, lateral prongs with some small teeth laterally.Chela long, movable and fixed digits each with 2 small teeth near to the ends. Examined specimens 8 ♀♀,43 deutonymphs and 1 protonymph, from forest soils, in Dunhua County(43° 21′ N,128° 13′ E),Jilin Province, Aug.1990.