Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954 Author Bochkov, Andre V. text Zootaxa 2011 2011-07-08 2954 1 1 86 https://biotaxa.org/Zootaxa/article/view/zootaxa.2954.1.1 journal article 10.11646/zootaxa.2954.1.1 1175­5334 5282049 12. Radfordia (Microtimyobia) lemmus Fain and Lukoschus, 1977 ( Figs. 32–34 ) Radfordia (Microtimyobia) arctica lemmus Fain and Lukoschus, 1977: 77 , 77–80, 93, 94, 108 Radfordia (Microtimyobia) lemmus , Bochkov 1995: 489 Diagnosis. FEMALE ( Fig. 32 ). Subcapitular setae m with 3 tines. Setae vi distinctly thicker and longer than e2 . Setae e1 and f1 filiform. Distances c1-d1 and d1-d2 subequal. Vulvar region almost without ornamentation; anterior margin of vulvar region widely rounded. Setae ps3 distinctly developed, slightly curved. Setae ag2 at least twice longer than ag1 . Setae 1b and 1d slightly thicker than 1a . Setae 2a and 3a whip-like, much longer than 2b . Trochanter I with ventral projection, without tubercles. Measurements of paratype ( Fain & Lukoschus 1977 ): body, including gnathosoma, 410 long, 220 maximum wide. Lengths of setae: si 90, se 85, c1 60, c2 75, d1 60, d2 70, e1 12 , e2 45 . MALE ( Fig. 33 ). Subcapitular setae m filiform. Genital cone slightly elongated, length/width ratio 1.4:1, with straight slanting lateral margins without projections. Bases of setae vi situated anterior to setae ps2 . Setae f1 3 times shorter than e2 . Posterior end of opisthosoma without tubercles dorsally and with tubercles ventrally. Setae 2b whip-like, much longer than 2a and 3a . Trochanter I with ventral projection, without tubercles. Measurements of holotype ( Fain & Lukoschus 1977 ): body, including gnathosoma, 305 long, 170 maximum wide. Lengths of setae: si 25, e1 63/60, e2 33 . FEMALE TRITONYMPH ( Fig. 34 ). Setae f2 and h2 stick-like, other dorsal idiosomal setae narrow lanceolate. Setae 3a and 4a short, much shorter than 2a . Tarsus IV bearing 2 setae and 2 setal alveoli. Type host and locality. Lemmus lemmus from Sweden as subspecies of R. arctica ( Fain & Lukoschus 1977 ) . FIGURE 33. Radfordia (M.) lemmus Fain and Lukoschus, 1977 from Lemmus sibiricus , male. A, dorsal view; B, ventral view; C, genital cone. Scale bars: A, B = 100 µm; C = 50 µm. FIGURE 34. Radfordia (M.) lemmus Fain and Lukoschus, 1977 from Lemmus sibiricus , female tritonymph. A, idiosoma in dorsal view; B, same in ventral view; C, tarsus IV in ventral view. Scale bars: A, B = 100 µm; C = 50 µm. Hosts and distribution. This species is associated with voles of the genus Lemmus ( Bochkov 1995 ) . It was recorded from: Lemmus lemmus from Sweden ( Fain & Lukoschus 1977 ); Lemmus sibiricus from Russia (Taymyr Peninsula) ( Bochkov 1995 ). Material examined. Lemmus lemmus — Male holotype ( IRSNB ), 1 male and 1 female paratypes ( ZISP ), SWEDEN : Sitojaure , Lulelappmark , 16 June 1966 , coll. Forstroem. Lemmus sibiricus — 20 males , 60 females , 8 female TN, and 2 male TN, RUSSIA : Taymyr peninsula, Tareya- Pyasina River , June–July 1976 , coll. E. Dubinina. Type deposition. Radfordia arctica lemmus —IRSNB, male holotype (examined).