【摘要】 <正> 本文报告的四川省血革螨科四新种,隶属于血革螨属Haemogamasus和真厉螨属Eulaelaps,其中真厉螨属的二新种均系厩真厉螨种团内的种。文内量度单位均为微米。1.峨眉血革螨 Haemogamasus emeiensis,新种(图1—17) 体椭圆形,长836,宽587。背板几乎覆盖整个背面,背毛光滑,约210根,均匀分布。更多还原

【Abstract】 This paper reports two new species of the genus Haemogamasus and two newspecies of the genus Eulaelaps belonging to the stabularis group comples. The typesare deposited in the Health & Anti-epidemic Station of Sichuan Province and theShanghai First Medical College. Haemogamasus emeiensis, sp. nov. （figs. 1-17） Female: Idiosoma 836×587μ. Sternal plate. 122×163μ, with. 3 pairs of sternalsetae, St₁ situated at the anterior margin. Genitoventral plate with 1 pair of genitaland 8 ventral setae. Anal plate pear-shaped, with 2 accessory setae. Peritremal plateextended and curved posteriorly to encompass coxae Ⅳ, and fused with a part ofparapodal plate in the form of making a branch. Coxa Ⅱ with 1 spur on the anteriorarea. Male: Idiosoma 631×412μ. Holoventral plate strongly expanded behind coxaeⅣ, with about 60 accessory setae. Palps without specific setae. Leg Ⅱ, coxa with 1spur, femur and tarsus with 2 spines, genu and tibia with 1 spine. This species is closely allied to H. suncus Allred, but in the latter, coxae Ⅱ withoutspurs, sternal plate with only 2 pairs of setae, and posterior part of pereitremal platenot forked. Holotype and allotype were collected off Anourosorex squamipes Milne-Edwards from Emei Sichuan, alt. 1400m, in August, 1978. Haemogamasus tangkeensis, sp. nov. （figs. 18-23） Female: Idiosoma 928×629μ（863-944×535-664 in 10 paratypes）. Sternalplate 126×148μ （126-133×151-155 in 9 paratypes）; St₁ plumose, St₂ and St₃, smooth;with 29 accessory setae （27-35 in 9 paratypes）; posterior margin weakly incurved,not extending to the level of St₃. Genitoventral plate with 48 ventral setae （48-69 in 9paratypes） on its middle and posterior parts. Chela rather large, with teeth; pilusdentilis hair-like. Tarsus Ⅳ very long. Male unknown. This species is similar to H. kusumotoi Asan. and H. serdjukovae Breg., but theaccessory setae on the sternal plate are more in number, the pilus dentilis is differentin shape, and tarsus Ⅳ is very long. Holotype was collected from Myospalax fontanierii Milne-Edwards from Tangke,Zoige County, Sichuan, in July, 1960. Paratypes were collected from the same locality as holotype in 1960, 3 from nest of Marmota bobak himalayana Hodgson, 5 fromnest of Ochotona thibetana Milne-Edwards, 1 from Myospalax fontanierii Milne-Edwards, and 1 record unknown. Eulaelaps silvestris, sp. nov. （fig. 24） Female: Idiosoma 1096×784μ. Scutum with about 190 dorsal setae. Sternal plate131×212μ. Genitoventral plate with 1 pair of genital and about 40 ventral setae;both lateral margins with a clear incision on the level of coxae Ⅳ, but withoutcanalicule-like invaginations. Anal plate slightly convex on the mid-portion of an-terior margin, 121×283μ. Peritrematal plate broad and about 82μ in width; itsposterior truncate end with 2-3 longitudinal curved lines extending from stigma toposterior margin of the plate and 3-4 transverse curved lines extending from peritremeto external margin; lyriform organ very large. Gnathosomal groove with 10-11 rowsof dentation, eaeh with 4-10 teeth. Tectum tongue-like, at the anterior margin exten-sions rather long. Chela 80μ long. Male unknown. This species resembles E. dongfangis Wen, but in the latter, scutum with about480 dorsal setae, peritrematal plate not very broad, and its posterior end narrow,metapodal plate small, equiangular triangle in shape, and anal plate narrow and long. Holotype was collected off Apodemus chevirieri Milne-Edwards from HeishuiCounty, Sichuan, in August, 1960, Paratypes 3 were collected off Rattus niviventerHodgson and Rattus coxingi Swinhoe from Heishui County, Sichuan, in June, 1960,and 21 collected from same locality, host unknown. Eulaelaps pratentis, sp. nov. （fig. 25） Female: ldiosoma 944×643μ. Scutum with about 300 dorsal setae. Sternal plate147×182μ. Genitoventral plate with 1 pair of genital and about 40 ventral setae;both lateral margins with a clear slightly curved invaginated canalicule incisions on thelevel of coxae Ⅳ. Anal plate 104×208μ. Metapodal plate 164×114μ. Peritrematalplate narrow, 60μ in width,更多还原