Radfordia (Microtimyobia) pitymys, Bochkov, 2011

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 : 38-39

9. Radfordia (Microtimyobia) pitymys sp. nov.

( Figs. 25 , 26 )

Diagnosis. FEMALE (Sheathed in tritonymph cuticle). Setae vi distinctly wider than e2. Setae e1 and f1 filiform. Distances c1-d1 and d1-d2 subequal. Setae ps3 distinctly developed, slightly curved. Setae 1b and 1d slightly thicker than 1a. Setae 2a and 3a whip-like, much longer than 2b. Setae 3a and 4a subequal, much shorter than 2 a. Trochanter I with ventral projection.

MALE (holotype, Fig. 25 ). Subcapitular setae m membranous lanceolate, pointed apically. Genital cone slightly elongated, length/width ratio 1.5:1, with straight and parallel lateral margins and distinct lateral shoulders. Bases of setae vi situated anterior to setae ps2. Setae f1 2.5 times shorter than e2. Posterior end of opisthosoma with tubercles ventrally. Setae 2b whip-like, much longer than 2a and 3a. Trochanter I with ventral projection, without tubercles. Measurements of holotype: body, including gnathosoma, 350 long (340–350 in 2 paratypes), 195 maximum wide (190–200). Aedeagus 140 long. Lengths of setae: vi 17 (15–17), ve 90 (87–90), si 35 (33–35), se 80 (80–90), c2 110 (100–110), e1 60 (60–63), e2 35 (37–39), f1 15 (15–17), 2a 17 (15–17), 3a 18 (18–20), 4a 30 (30– 35).

FEMALE TRITONYMPH ( Fig. 26 ). Setae h2 stick-like, f2 and other dorsal idiosomal setae narrow lanceolate. Setae 3a about 12 long, 4a about 10 long. Tarsus IV with 4 short setae.

Differential diagnosis. See key.

Etymology. The species name is derived from the subgeneric name of the host and is a noun in apposition.

Type host and locality. Microtus pinetorum from USA (Virginia) .

Hosts and distribution. This species is so far definitely known only from the type host and locality and, probably, from the type host from Maryland and Indiana ( USA) ( Drummond 1957; Fain & Lukoschus 1977).

Material examined. Male holotype ( ZISP T-My-33), 2 male, 4 female TN (2 pharate), and 1 male TN from Pitymys pinetorum ( ZISP 71909 ), USA: Virginia, Fairfax Co., Springfield , 6 June 1986, coll. unknown .

Type deposition. Radfordia pitymys —ZISP (T-My-34), male holotype and all paratypes (examined).

Figures

FIGURE 25. Radfordia (M.) pitymys sp. nov., male holotype. A, dorsal view; B, ventral view; C, seta m; D, genital cone. Scale bars: A, B = 100 µm; C, D = 50 µm.

FIGURE 26. Radfordia (M.) pitymys sp. nov., 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.