Spinturnix senkevitchi, Orlova & Anisimov, 2023

Orlova, Maria V. & Anisimov, Nikolay V., 2023, Three new species of bat-parasitic gamasid mites of the genera Spinturnix, Macronyssus and Steatonyssus (Acari: Mesostigmata: Spinturnicidae, Macronyssidae) from Siberia and Mongolia, with keys to species of Russia and adjacent countries, Persian Journal of Acarology 12 (2), pp. 211-239 : 212-215

Spinturnix senkevitchi sp. nov.

http://zoobank.org/ urn:lsid:zoobank.org:act:0A003D3A-1AC5-444E-862C-2898A22229AE

Diagnosis (female)

Idiosoma 1100 long and 900 wide, broadly rounded anteriorly, widest at level of coxa II to III, with rounded opisthosoma. Dorsal shield with two large rounded projections. Opisthosoma with 18 pairs of dorsal and 11 pairs of opisthogastric setae. Sternal shield rounded, with one pair of setae (St2); epigynial shield club-shaped in outline, with one pair of setae.

Description

Dorsal idiosoma ( Figs. 1–2 ) – Dorsal shield, 684 long, 494 wide, punctated, with a large rounded projection at anterior and posterior margins ( Fig. 2 ), widest at level of coxae II–III; with 12 pairs of gland pores (three of them small, other larger) and pitted pattern. Peritremes (152) with stigma completely dorsal, with anterior ends between coxa II and III extending ventrally. Podonotal soft cuticle with wavy linear pattern, with five pairs of rough setae (73–102). Metapodosomal setae ( Fig. 1 ) (97–101) proximal to stigma. Opisthonotal integument with scale-like pattern, with 18 pairs of setae (61–142).

Ventral idiosoma ( Figs. 3–4 ) – Tritosternum small, flattened, 19 in width. Sternal shield rounded (127 long, 166 wide), with reticulate pattern, and 1 pair of setae St2 (25–28), and two pairs of small gland pores. Epigynial shield (133 long, 99 wide) club-shaped in outline, with one pair of setae St5 (18). Two pairs of endopodal sclerites on ventral surface: between coxae I and II and near epigynial shield. Four pairs of setae between coxae IV; with 21–27 ventral setae. Anal shield rounded, with 1 setal pairs.

Legs ( Figs. 3–4 ) – Legs stout, approximately equal in width; coxae I-IV robust, with wavy linear pattern. Posterior setae of coxae II long (about 150) and rough. Dorsal and lateral leg setae long (96– 201), thick and smooth; lanceolate setae absent. Ventral setae of legs mostly short (31–54) and smooth. Tarsal claws long, pulvilli well developed. Setation of legs as in Table 1.

Gnathosoma ( Fig. 5 ) – Tectum small and short. Hypostomal setae: hyp1 24 in length, hyp2 and hyp3 minute. Hypostomal processes pointed. Chelicera with toothed chela.

Male, protonymph, deutonymph: Unknown. Differential diagnosis

The female of Spinturnix senkevitchi is similar to that of Spinturnix delacruzi Estrada-Peña, Ballesta and Ibañez, 1992 by having a single pair of setae on the rounded sternal shield; however, S. senkevitchi differs by the presence of two pairs of gland pores on sternal shield (vs one in S. delacruzi ), epigynial shield club-shaped in outline (vs triangular in S. delacruzi ).

Type material

Holotype female, Mongolia: Kharmagtayn, Dornogov’ aymag 42° 39ʹ N, 108° 56ʹ E, ex Hypsugo alaschanicus ( Chiroptera : Vespertilionidae ), 12 August 2014, leg. V.S. Lebedev.

Etymology

The species is named in honor of Dr. Yuriy A. Senkevitch (1937–2003), the distinguished Russian traveler born in Mongolia.

Figures

Figure 5. Spinturnix senkevitchi sp. nov. (female) – Ventral view of gnathosoma. Scale bar 50 µm.

Figures 1–2. Spinturnix senkevitchi sp. nov. (female, dorsal idiosoma) – 1. Photograph; 2. Drawing. Scale bar 100 µm. A. Podonotum with podonotal setae; B. Opisthonotum with opisthonotal setae. Arrows mark metapodosomal setae.

Figures 3–4. Spinturnix senkevitchi sp. nov. (female, ventral idiosoma) – 3. Photograph; 4. Drawing. Scale bar 100 µm.