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 8. Radfordia (Microtimyobia) hylandi Fain and Lukoschus, 1977 ( Figs. 23 , 24 ) Radfordia (Microtimyobia) hylandi Fain and Lukoschus, 1977: 69 , figs. 69–72, 89, 90, 109, 110 Diagnosis. FEMALE ( Fig. 23 ). Subcapitular setae m with 4 tines. Setae vi distinctly wider than e2 . Setae e1 and f1 filiform. Distances c1-d1 and d1-d2 subequal. Vulvar region ornamented by tubercles. Setae ps3 distinctly developed, slightly curved. Setae ag2 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, 380 long, 215 maximum wide. Lengths of setae: vi 60, si 95, se 75, c1 60, c2 75, d1 and d2 about 60, e1 16 , e2 50 . FIGURE 23. Radfordia (M.) hylandi Fain and Lukoschus, 1977 from Microtus pennsylvanicus , female. A, dorsal view; B, ventral view; C, seta m , D, vulvar region. Scale bars: A, B = 100 µm; C, D = 50 µm. FIGURE 24. Radfordia (M.) hylandi Fain and Lukoschus, 1977 , male from Microtus pennsylvanicus . A, dorsal view; B, ventral view; C, seta m ; D, genital cone. Specimen from fossil Microtus miurus . E, genital cone. Scale bars: A, B = 100 µm; C–E = 50 µm. MALE ( Fig. 24 ). Subcapitular setae m membranous with 4 tines. Genital cone slightly elongated, length/width ratio 1.7:1, with straight and parallel lateral margins and distinct lateral shoulders. Bases of setae vi situated anterior to setae ps2 . Setae f1 about 2 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, 285 long, 160 maximum wide. Aedeagus 108 long. Lengths of setae: vi 18, si 40, se 100, c2 100, e1 66/60, e2 42 , f1 24. FEMALE TRITONYMPH (strongly damaged). Tarsus IV with 4 setae. Type host and locality. Microtus pennsylvanicus from USA (Patience Island) ( Fain & Lukoschus 1977 ). Hosts and distribution. This species is associated with Nearctic arvicolines of the genus Microtus ( Fain & Lukoschus 1977 ; Dubinina & Bochkov 1996 ). Its record from Microtus pinetorum in the USA ( Indiana and Maryland ) ( Drummond 1957 ; Fain & Lukoschus 1977 ) should been referred to Radfordia pitymys sp. nov. (see above). Whereas records of this species from Myodes gapperi from USA ( Rhode Island ) and Canada (St. Zenon) ( Fain & Lukoschus 1977 ) are probably accidental. It was recorded from: Microtus pennsylvanicus from various localities in USA and Canada ( Ewing 1938 ; Drummond 1957 ; Fain & Lukoschus 1977 ); Microtus oregoni from USA ( Whitaker & Maser 1984 ); Microtus mexicanus from USA ( Texas ) ( Fain & Lukoschus 1977 ); Microtus miurus (extinct subspecies egorovi ) from Russia (Yakutia) ( Dubinina & Bochkov 1996 ). Material examined. Microtus pennsylvanicus — 1 male and 1 female paratypes ( ZISP ), USA : Michigan , Roberts Lake , 18 June 1967 , coll. Wrenn ; 4 females ( BMOC 97-0907 - 001 ), USA : Michigan , Oakland Co. , Milford , 7 September 1997 , coll. R. Ochoa ; 2 females ( BMOC 02-0925 - 002 ), USA : Michigan , Livingston Co. , E.S. George Reserve , 25 September 2002 , coll. A.J. Dowling ; 2 males and 3 females ( BMOC 95-0316 - 001 ), USA : Michigan , Washtenaw Co. , 2 mi NW Dexter , 16 March 1995 , coll. B.M. OConnor; 1 female ( IRSNB ), USA : Michigan , Emmet Co. , 25 July 1968 , coll. Wrenn ; 1 female ( IRSNB ), USA : New York , Patience Island , 13 June 1956 , coll. J. Cronan ; 1 male and 1 female ( IRSNB ), USA : New York , Dutch Island , 14 June 1956 , coll. J. Cronan. † Microtus miuris egorovi (Pleistocene, about 35 thousand years)— 3 males , 8 females , and 1 female TN, RUS- SIA : Yakutia, basin of Indigirka River, Surovy Spring (tributary of Dyurin’-Yuryakh River), summer 1968, coll. G. Feigin. Type deposition. Radfordia hylandi —USNM, male holotype (no. 84.119) (not examined)