Radfordia (Microtimyobia) zibethicalis ( Radford, 1936 )

Bochkov, Andre V., 2011, Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954, Zootaxa 2954 (1), pp. 1-86 : 52-53

16. Radfordia (Microtimyobia) zibethicalis ( Radford, 1936)

( Figs. 42–44 )

Myobia zibethicalis Radford, 1936: 35 , figs. 1, 2

Radfordia zibethicalis, Radford 1954: 243

Radfordia (Microtimyobia) zibethicalis, Fain & Lukoschus 1977: 92 , figs. 101, 102, 113

Diagnosis. FEMALE ( Figs. 42 , 44 ). Subcapitular setae m lanceolate, pointed apically. Subcapitulum ventrally with 1 pair of distinct widely rounded projections immediately posterior to bases of setae m. Setae vi distinctly wider and longer than e2. Setae e1 and f1 filiform. Distance c1-d1 2 times longer than d1-d2. Vulvar region not ornamented. Setae ps3 distinctly developed, slightly curved. Setae ag2 at least twice longer than ag1. Setae 1b and 1d slightly thicker than 1a. Setae 2b and 3a whip-like, much longer than 2a. Trochanter I with ventral projection, without tubercles. Measurements (specimen from Russia, Irkutsk Prov.): body, including gnathosoma, 455 long, 325 maximum wide. Lengths of setae: vi 87 (15 wide); ve 130 (22 wide), si 125 (12 wide), se 112 (6 wide); c1 90, c2 120, d1 and d2 about 85—all about 10 wide; e1 and f1 about 22, e2 40 (4 wide), 2a 22, 2b 115, 3a 120, 4a 40.

MALE ( Fig. 43 , 44 ). Subcapitular setae m membranous lanceolate, pointed apically. Genital cone slightly elongated, length/width ratio 1.6:1, lateral margins with weakly developed shoulders, without projections; anterior part of genital cone with membranous cover. Bases of setae vi situated anterior to setae ps2. Setae e2 long and thick, subequal to e1 and 2 times longer than f1. Posterior end of opisthosoma without tubercles. Setae 2a very short, setae 2b subequal to 3a and only slightly longer than 2a. Trochanter I with weakly developed ventral projection, without tubercles. Measurements (specimen from Russia, Irkutsk Prov.): body, including gnathosoma, 365 long, 300 maximum wide. Aedeagus 80 long. Lengths of setae: vi 20, ve 115, si 30, se 160, c2 135, e1 and e2 about 60, f1 37, 2a 12, 2b 16, 3a 18, 4a 20.

TRITONYMPH. Not described.

Type host and locality. Ondatra zibethicus from England ( Radford 1936) .

Hosts and distribution. This species is known only from the type host from England ( Radford 1936), Switzerland, France, Holland, and Belgium ( Fain & Lukoschus 1977), Russia (Irkutsk Prov.) ( Bochkov 1995), USA (various parts) ( Radford 1954; Fain & Lukoschus 1977; Whitaker & Maser 1985).

Material examined. Ondatra zibethicus — 1 male and 1 female, RUSSIA: Irkutsk Prov., other data unknown .

Type deposition. Radfordia zibethicalis —Unknown.

Figures

FIGURE 42. Radfordia (M.) zibethicalis (Radford, 1936), female. A, dorsal view; B, ventral view.

FIGURE 43. Radfordia (M.) zibethicalis (Radford, 1936), male. A, dorsal view; B, ventral view.

FIGURE 44. Radfordia (M.) zibethicalis (Radford, 1936), details. A, seta m of female, B, vulvar region, C, seta m of male; D, genital cone.