中国华皱皮螨属一新种(蜱螨亚纲:粉螨科)

A NEW SPECIES OF THE GENUS SINOSUIDASIA FROM CHINA (ACARI:ACARIDAE)

记述从白星花金龟Potosiabrevitarsis上采到的华皱皮螨属一新种 :缙云华皱皮螨Sinosuida siajinyunensissp .nov .。文内测量单位均为 μm。

In this paper,a new species of Sinosuidasia,found on Potosia brevitarsis from Chongqing,is described.The type specimen is deposited in the Department of Plant Protection,Southwest Agricultural University.All measurements are given in micrometers (μm).Sinosuidasia jinyunensis sp.nov. (Figs.1-10) Female.The cuticle is finely wrinkled or covered with a scale-like pattern.Length of idiosoma 336^4,width 282.2.The dorsal setae are smooth.Dorsum(Fig.1).Lengths of setae vi 42.9,ve 10.7,sci 54.6,sce 165.8,hi 39.0,he 181.4,d-1 54.6,d-2 195.0,d-3 181^4,d-4 41^0,1a 189^2,lp 181^4,sae 50.7,sai 19^5。Latero-abdominal glands not clear.Supracoxal seta (Fig.3) curved,with 3 barbs.Venter (Fig.2).Two paris of coxal setae inserted on the coxal regions of legs Ⅰ and Ⅲ,hv 62^4;genital opening between coxae Ⅲ and Ⅳ,with 2 pairs of acetabula and 3 pairs of genital setae(Fig.4);6 pairs of setae surrounding the anal opening:a-137.1,a 2 35.1,a 3 29.3,a 4 29.3,a 5 25.4,a 6 25.4(Fig.5);pa 1 226.2,pa 2 72.2.Copulatory pore behind anal pore. Chelicerae (Fig.6).Fixed digit with 5 teeth,movable digit with 3 teeth.Legs (Fig.7-10).Chaetotaxy of legs (Ⅰ-Ⅳ) as follows (solenidia and spine-like setae included):coxae,1-0-1-0;trochanters,1-1-1-0;femora,1-1-0-1;genua,4-3-2-0;tibiae,3-3-2-1;tarsi,13-11-8-8.Male.Unknown.Holotype female,taken from Potosia brevitarsis,Chongqing City (29.5°N,106.5°E),28 Apr.2000;by XIE Guang-Lin and LI Bao-Yu.This new species resembles Sinosuidasia orientalis Jiang,1996,but it can be distinguished from the latter by the presence of 6 pairs of anal setae instead of 5 pairs and seta d-2 extending beyond the end of idiosoma.