Torotrogla volgini Skoracki & Mironov, 2013, sp. nov.

Torotrogla volgini sp. nov.

(Figs. 4 and 5)

Description. FEMALE (holotype). Total body length 745 (740–835 in 10 paratypes). Gnathosoma. Infracapitulum apunctate. Hypostomal apex with pair of medium sized, thin and blunt-ended protuberances (Fig. 5 A). Each medial branch of peritremes with 4 chambers, each lateral branch with 6–7 chambers (Fig. 5 B). Stylophore apunctate, 285 (275–285) long. Idiosoma. Propodonotal shield punctate at lateral margins, concave on anterior and posterior margins. Length ratio of setae vi: ve: si 1:1.2–1.5:2.9–3.1. Setae c2 situated anterior to level of setae se. Two oval hysteronotal shields weakly sclerotized and apunctate, situated near bases of setae d1 (Fig. 5 D). Pygidial shield well sclerotized, apunctate, with rounded anterior margin. Setae h1 not significant (1.2 times) longer than f1. Coxal fields I–IV sparsely punctate. Legs. Fan-like seta p’ and p” of legs III and IV with 7–8 tines (Fig. 5 C). Setae tc’ and tc” of legs III and IV subequal in length. Setae l’RIII–IV reach at most genua III and IV. Lengths of setae: vi 65 (55–65), ve 90 (85–90), si 190 (185–190), se 200 (185–260), c1 260 (245–265), c2 190 (180–190), d1 195 (180– 195), d2 190 (180–195), e2 195 (190–200), f1 80 (80–100), h1 95 (95–120), f2 and h2 longer than 350, ps1 30 (30– 35), ps2 30 (30–35), g1 40 (40), g2 40 (40–45), tc’III–IV (65–70), tc” III–IV 75 (70–75), 3b 70 (65–70), 3c 80 (80– 85), l’RIII 50 (45–50), l’RIV 50 (45–50).

MALE. Unknown.

Type material. Female holotype and 10 female paratypes (ZISP–AVB 011–2908–052) from secondary of Emberiza elegans Temminck (Passeriformes: Emberizidae); RUSSIA, Russia, Primorsky Krai, Partizanskii District, Novolitovsk, 9 km N, 42º51’40”N; 132º53’5.5”E, 25 September 2008, coll. S.V. Mironov (SVM 08– 0925–3/2).

Type material deposition. All material is deposited in the ZISP, except 4 female paratypes in the AMU (Reg. No. AMU–SYR.429).

Etymology. This species is named in honor of the prominent Russian acarologist, Dr. V.I. Volgin.

Differential diagnosis. This new species is morphologically similar to T. modularis Nattress and Skoracki, 2007 described from Prunella modularis (Linnaeus) (Prunellidae) in England (Nattress & Skoracki 2007). In females of both species, setae h1 and f1 are subequal in length; the hysteronotal shields are well discernible and setae d1 are situated anterior to these shields; the hypostomal protuberances are narrow; setae l’ of trochanters III and IV do not extend beyond the corresponding genua. Torotrogla emberizae sp. nov. differs from T. modularis by the following features: in females of T. emberizae, the propodonotal, hysteronotal, and pygidial shields are apunctate; the length of hysteronotal setae is d1 180–195, d2 180–195 and e2 190–200; the length ratio of setae vi: h1 is 1:1.5. In females of T. modularis, the propodonotal, hysteronotal, and pygidial shields are densely punctate; the lengths of hysteronotal setae are as follows: d1 140–160, d2 135–145, e2 140–170; the length ratio of setae vi: h1 is 1:1.