【摘要】 <正> 从四川省西部采到两种恙螨,经研究系科学上未报道的新种,现记述如下: 鼠兔叶片恙螨 Trombiculindus(Plumosicola)ochotonae,新种(图1—3) 中型恙螨,体呈椭圆形。螯肢片上具三角冠。螯鞘毛分枝。鬚肢毛式N-N-BNN。鬚跗毛fT=7B。鬚肢爪3分叉。背板呈宽长方形,上具刻点,宽约为长的2.25。前中毛位于前侧毛线之下方。SB位于后侧毛线上或略高。PL>AL。眼2×2。背板上各部量度(单位:微米)如下:更多还原

【Abstract】 The specimens for the present study were collected from western Sichuan.Trombiculindus (Plumosicola) ochotonae, sp. nov. (figs. 1-3)Trombiculid mites of medium size, Ip=1015. Chelicera with usual tricuspid cap. Ga-leala branched. Formula of palpal setation N-N-BNN, fT=7B. Scutum punctate, roughly wide rectangular. AM behind AL line, SB slightly before or on PL line. Eyes 2×2. AW 95, PW 108, SB 48, ASB 30, PSB 18, AP 30,AL 47, PL 65. Dorsal setae arranged as 2,16, 13, 18,8,8, 10,7, 6, 3=91. Ventral setae with 40 preanals and 15 postanals. Leg Ⅰ with 2 genulae, leg Ⅱ with 1 genula, leg Ⅲ-with 1 genula and 1 tibiala, no mastisetae. SIF=7B-B-3-2111.0000.This mite is similar to T. squamifera (Womersley, 1952), but with SB slightly before or on PL line. It differs from such species with SB on PL line as T. traubi (Womersley, 1952), T. fordi (Womersley, 1952) and T. thumani Traub et al, 1968,in having larger AW and PW.Holotype, larva, collected off Ochotona gloveri from Barkam County, Aba Zang Autonomous Prefecture on Jan. 10th, 1981. Specimen deposited in the Department of Parasitolo-gy, Fujian Medical College.Helenicula abaensis, sp. nov. (figs. 4-7)Trombiculid mite of medium size. Ip =1069. Chelicera with usual tricuspid cap. Galeala nude. Formula of palpal setation B-B-BBB, fT=5B. Scutum punctate, roughly rectangular. Se-nsilla globose, with sparse minute spicules, so that the expanded portion of sensilla appears nude. Sensillary bases close together and situated before the PL line. Eyes 2×2. AW 71, PW 86, SB 13, ASB 35, PSB 22, AP 38, AM 43, AL 63, PL 60, Sens peduncle 8, expanded portion 30×25. Dorsal setae arranged as 4, 6, 11, 12,10, 10, 7, 5=65. Ventral setae with 44 preanals and 23 postanals. Leg I with 2 geaulae, 2 tibialae, 1 tarsala, leg Ⅱ2 with 1 genula, 2 tibialae, 1 tarsala, leg Ⅲ with 1 genula and 1 tibiala, no mastisetae. Nude subterminala, parasubterminala, pretarsalae 1 and 2 present. SIF=5B-N-3-2111.0000.This mite is similar to H. simens (Hsu et Chen, 1957) and H. scaloni (Domrow et Na-dchatram, 1964), but with much larger scutum (also sensilla) and mote dorsal setae.Holotype, larva, collected off Rattus confucianus from Gangou, Barkam County, Aba Zang Autonomous Prefecture on Apr. 17th, 1979. Specimen deposited in the Department of Parasitology, Fujian Medical College.更多还原