姬鸟虱属二新种记述(食毛目:长角鸟虱科)

Two New Species of Genus Goniocotes (Mallophaga:Philopteridae) from Chinese Pheasants

姬鸟虱属Goniocotes Burmeister,1838为鸡形目鸟类体外寄生昆虫。本文记述二新种,均采自中国产的雉鸡类,模式标本保存在北京自然博物馆。1.雉鹑姬鸟虱Goniocotes tetraophasis Liu,新种(图1) 雄虫 体长0.93～0.95mm,体宽0.53～0.54mm。体壁上有网状刻纹,前头缘呈圆弧状,唇基带在中央最宽。锥体突不明显。两颊前侧缘稍向外斜伸,两颊角钝圆。

1. Goniocotes tetraophasis Liu, sp. nov. (Fig. 1)This species is extremely close to G. haplogonus (Nietzsche, 1838), but can be distinguished by the following characters: 1) posterior margin of both temples not on a level as in G. haplogonus; 2) posterior lateral angles of abdominal segment Ⅶ not so bidentate as in G. haplogonus in both sexes; 3) lateral corner of the valve with 2-3 short spines, posterior margin of terminal segments broadly round, but not so truncated as in G. haplogonus in females, and 4) chaetotaxy of abdominal segments as shown in Fig. 1 A,B.Male: Total length 0.93 - 0.95 mm, breadth 0.53-0.54 mm. External morphology and chaetotaxy as shown in Fig. 1. Genitalia with elongated basal plate stretching from mesocoxal cavity to end of abdomen, paramere shorter as shown in Fig. 1C.Female: Total length 1.45-1.47 mm, breadth 0.75-0.76 mm. External morphology and chaetotaxy as shown in Fig. 1D.Type host: Tetraophasis obscurus (J. Verreaus).Holotype (?) , allotype (?) , paratypes 2 (?) (?) 11 (?) (?) , collected on 18-Ⅶ-1983 from Baoxing, Sichuan, kept in Beijing Natural History Museum.2. Goniocotes crossoptiloni Liu, sp. nov. (Fig. 2)This species is allied to G. tetraophasis, because both have the body thickened with reticulated sculpture, and the posterior lateral angles of abdominal segment Ⅶ not bidentate in both sexes, and broad round posterior margin of terminal segmsnts in females, but can be easily distinguished from the latter by the following characters: 1) body larger, total length (?) 1.17-1.24, (?) 1.76-1.87 mm, breadth (?) 0.68-0.73, (?) 0.86-0.98 mm; 2) head index in both sexes smaller: (?) C.I = 1.42-1.49, (?) C.I =1.38- 1.42, but in G. tetraophasis (?) C.I = 1.50-1.51, (?) C.I = 1.46-1.48; 3) male with more setae on abdominal sternites, female with two post-spiracular setae, 4) paramere longer. The chaetotaxy and short spines of the female genitalia region are shown in Fig. 2 D.Type host: Crossoptilon crossoptilon (Hodgson).Holotype (?) , allotype (?) , paratypes 9 (?) (?) 113 (?) (?), collected from Beijing Zoo on 25-Ⅳ-1974, kept in Beijing Natural History Museum.