双色革鞍螨雄螨及后若螨描述(蜱螨亚纲:中气门目:胭螨科)

Morphological characters of male adult and deutonymph of Gamasellodes bicolor(Berlese)

描述双色革鞍螨Gamasellodes bicolor(Berlese,1948)雄螨及后若螨。

Morphological characters of male adults and deutonymph of Gamasellodes bicolor(Berlese,1948) were described. Male.Length 280μm,width 172μm.Dorsum covered with 2 shields,anterior dorsal shield with 17 pairs of short and simple setae,and posterior dorsal shield with 15 pairs of simple setae.Sterno - genital shield with 5 pairs of setae and 3 pairs of pores.Anterior margin of ventro - anal shield with 2 concavity;ventral setae 7 pairs,the last pair long.Ad situated at level of middle anus, subequal to anus in length.PA longer than Ad.Peritreme reaching to middle of coxaⅠanteriorly.Tectum 3 - tined.Spermatodactyl of chela slender.Legs setae short and simple. Deutonymph.Length 268μm,width 160μm.Dorsum with 41 pairs of simple setae,venter with 4 pairs of sternal setae,about 8 pairs of ventral setae and 3 perianal setae.Peritreme reaching between coxaeⅠandⅡanteriorly. Specimens:6♀♀and 1♂,under withered bark,from Tai'an(36°15'N,117°08'E),Shandong Province,July 2000,collected by KUANG Yi.2♀♀and 1 deutonymph,ex plant litter,from Songshan Mountain(34°32'N,113°03'E),Henan Province, 18 July 2001,collected by LIN Jianzhen.