Stigmaeus kuznetsovi Khaustov, sp. nov.
Creators: name: Khaustov, Alexander A.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Stigmaeidae
Stigmaeus
Stigmaeus kuznetsovi

description: Stigmaeus kuznetsovi Khaustov sp. nov.
(Figs. 10–17, 29)
Description. FEMALE. Length of idiosoma 430 (420–450), width 297(300–320). The chaetotaxy of body and legs as in S. mitrofanovi sp. nov. Idiosomal dorsum (Fig. 10). Central plate with 2 pairs of setae c 1 and d 1; intercalary plates paired. All plates coarsely reticulated; Postocular bodies of medium size, smooth (Fig. 29). Eyes absent. Striation anterolateral to propodosomal plate without microtubercles. All dorsal setae barbed. Setae ve, sce, and c 2, longer than others and pointed. Other dorsal setae distinctly blunt-ended and barbed in distal half. Setae e 2 distinctly longer than d 2, and only slightly shorter than sce and c 2. Ratio ve/sci = 2.0. Length of dorsal setae: vi 74, ve 106, sci 51, sce 96, c 1 61, c 2 97, d 1 61, d 2 67, e 1 56, e 2 89, f 1 79, h 1 68, h 2 69. Distances between setae: vi-vi 25, veve 69, sci-sci 122, c 1 -c 1 80, d 1 -d 1 80, h 1 -h 1 46, h 1 -h 2 33.
Idiosomal venter (Fig. 11). All ventral plates without reticulation. All ventral setae pointed, except for h 1 which is blunt-ended and strongly barbed in distal half; setae ag 3, ps 2, and ps 3 barbed, other ventral setae smooth. Length of ventral setae: 1 a 25, 1 b 28, 1 c 44, 2 b 43, 2 c 42, 3 a 31, 3 b 30, 3 c 23, 4 a 25, 4 b 27, 4 c 27, ag 1 23, ag 2 29, ag 3 36, g 19, ps 1 45, ps 2 30, ps 3 30.
Gnathosoma (Figs. 12–13). Tibial claw large. All setae on femur, genu and tibia of palps are pointed, except for spine-like l’ on palpal tibia (Fig. 12). Palpal supracoxal setae (elcp) peg-like. Rostrum of subcapitulum (Fig. 13) relatively short and wide. Subcapitular setae smooth and pointed. Basal part of subcapitulum without distinct reticulation. Length of subcapitular setae: m 33, n 29, or 1 19, or 2 29.Legs (Figs. 14–17). Empodial raylets pointed. Leg segments without reticulation. Leg I (Fig. 14). Coxae I posterodorsally with peg-like leg supracoxal setae (elcl). Setae l”, d on genu and l”, d on femur blunt-ended and distinctly barbed in distal half. Seta d (47) on genu subequal to seta k (46). Solenidion ω relatively short (23), finger-shaped; solenidion φ (15) baculiform, φp attenuate (22). Leg II (Fig. 15). Setae d on genu and d, l” on femur blunt-ended and distinctly barbed in distal half. Solenidion ω (22) finger-shaped; solenidion φ (24) attenuate. Seta k short (10), about 4 times shorter than setae d on genu. Leg III (Fig. 16). Solenidion ω (13) finger-shaped; solenidion φ (19) attenuate. Setae d and l’ on femur blunt-ended and distinctly barbed. Leg IV (Fig. 17). Solenidion ω (12) finger-shaped; solenidion φ (18) attenuate. Setae d on genu and d on femur blunt-ended and distinctly barbed. Seta d on tibia of medium length (65) and barbed, 1.4 times longer than l’ on tibia.
Type material. Female holotype, slide № AK 090495, and 2 female paratypes, CRIMEA: Yalta mountain pasture, about 1200 m.a.s.l., from nest of Microtus socialis (Pallas) (Rodentia: Cricetidae), 9 April 1995, coll. Khaustov A.A..
Etymology. The new species is named after the late well-known acarologist Prof. N.N. Kuznetsov for his great contribution to acarology.
Differential diagnosis. The new species is most similar to S. siculus (Berlese, 1883) by the presence of two pairs of setae on the central plate, six and five setae on femora I and II, respectively, one pair of the genital setae, medium size postocular bodies, anterolateral striae on the prodorsum without microtubercles, peg-like supracoxal palpal and leg I setae, and by the absence of eyes. It differs from S. siculus by setae sce similar in shape and length to ve and c 2, and about 1.5–2 times longer than other dorsal idiosomal setae (vs. relatively short, blunt-ended, distinctly barbed in distal half, similar in shape and length to setae c 1 and d 1 which are 1.5–2 times shorter than ve and c 2 in S. siculus); the new species also differs by having setae e 2 distinctly longer than d 2 and only slightly shorter than c 2 (vs. setae e 2 are subequal to d 2 and about 1.5 times shorter than c 2 in S. siculus).
description: Published as part of Khaustov, Alexander A., 2014, New species and new records of mites of the genus Stigmaeus (Acari: Prostigmata: Stigmaeidae) from Crimea, pp. 237-253 in Zootaxa 3794 (2) on pages 241-243, DOI: 10.11646/zootaxa.3794.2.3, http://zenodo.org/record/228091