Scolotydaeus uralensis, Khaustov, 2017

Khaustov, Alexander A., 2017, Review of the Paratydeidae (Acari: Prostigmata), with description of three new species, Zootaxa 4303 (2), pp. 151-212 : 168-174

publication ID	https://doi.org/ 10.11646/zootaxa.4303.2.1
publication LSID	lsid:zoobank.org:pub:3FAFE179-A7AF-4755-8AB7-B1FC4CD9F8A3
DOI	https://doi.org/10.5281/zenodo.6051840
persistent identifier	https://treatment.plazi.org/id/1124C97E-FFD4-FFBE-A981-7B07FB7EFE9B
treatment provided by	Plazi
scientific name	Scolotydaeus uralensis
status	sp. nov.

Treatment

Scolotydaeus uralensis View in CoL sp. nov.

( Figs. 13–28 View FIGURE 13 View FIGURE 14 View FIGURE 15 View FIGURE 16 View FIGURE 17 View FIGURE 18 View FIGURE 19 View FIGURE 20 View FIGURE 21 View FIGURE 22 View FIGURE 23 View FIGURE 24 View FIGURE 25 View FIGURE 26 View FIGURE 27 View FIGURE 28 )

Description. FEMALE ( Figs. 13–18 View FIGURE 13 View FIGURE 14 View FIGURE 15 View FIGURE 16 View FIGURE 17 View FIGURE 18 ). Length of idiosoma 490 (465–495), width 170 (155–175). Gnathosoma ( Figs. 14 View FIGURE 14 , 15 View FIGURE 15 C, D, 16C). Palptarsus with three eupathidia (ul’ eupathidion-like) ( Fig. 17 View FIGURE 17 D). Subcapitular setae n distinctly longer than subequal m and or 1-2. Idiosomal dorsum ( Figs. 13 View FIGURE 13 A, 17A). Two pairs of eyes present; posterior eye distinctly smaller than anterior, difficult to discern, in some specimens not visible. Hysterosoma with transverse furrows between setal rows d-e, e-f and h-ps, respectively. Dorsal idiosomal setae c 1, d, e, f 1, h 1, ps 1, ad 1 blunt-ended and weakly barbed; other dorsal setae pointed; f 2 and h 2 barbed in basal part. Cupules im situated anterolaterally to setae e, cupules ip situated posterolaterally to setae f 1 and anteromedially to setae f 2. Idiosomal venter ( Fig. 13 View FIGURE 13 B, 18A, B). Setae 3 c, ps 2 and ad 2 blunt-ended, weakly barbed; other ventral setae pointed. Genital area with four pairs of simple aggenital setae and 7–8 pairs of genital setae. Third pair of genital acetabulae smaller than first and second pairs. Cupules ia situated anterolaterally to setae 3 a near lateral margin of the body; cupules ih situated laterally to setae ag 4. Lengths of idiosomal setae: ve 14 (13–15), sci 58 (56–59), sce 31 (29–32), c 1 19 (17–19), c 2 62 (58–64), d 17 (16–18), e 16 (14–16), f 1 19 (17–20), f 2 52 (48–54), h 1 24 (23–25), h 2 53 (50–55), ps 1 26 (25–28), ps 2 25 (25–27), ps 3 41 (39–42), ad 1 22 (21–23), ad 2 20 (18–20), ad 3 25 (24–26), 1 a 29 (28–30), 1 b 18 (17–19), 1 c 12 (11–12), 1 d 15 (14–15), 2 a 24 (22–25), 2 b 30 (27–31), 2 c 11 (10–11), 3 a 23 (22–24), 3 b 30 (27–30), 3 c 19 (10–21), 4 a 21 (20–22), 4 b 12 (12–14), ag 1 16 (16–19), ag 2 20 (19–22), ag 3 19 (18–20), ag 4 17 (16–17), g 1 11 (11–15), g 2 13 (11–14), g 3 15 (15–17), g 4 12 (11–12), g 5 15 (13—16), g 6 13 (12–14), g 7 11 (10–11), g 8 10 (9–11). Legs ( Figs. 15 View FIGURE 15 , 16 View FIGURE 16 , 18 View FIGURE 18 D). Lengths of legs: leg I 145 (140–145), leg II 100 (100–105), leg III 100 (100–105), leg IV 125 (125–130). Leg I ( Fig. 15 View FIGURE 15 A). Leg setation: Tr 0, Fe 3/5 (d, l’, l”, v’, v”, d 1, l’ 1, bv”), Ge 7(1) (d, l’, l”, v’, v”, l’ 1, l” 1, σ), Ti 8(1) (dξ, l’ξ, l”, v’, v”, k, l’ 1, l” 1, φ), Ta 14(2) (p’ξ, p”ξ, tc’ξ, tc”ξ, ft’ξ, ft”ξ, a’, a”, u’, u”, s, pl”, pv’, pv”, ω 1, ω 2). Seta d of tibia eupathidion-like. Leg II ( Fig. 15 View FIGURE 15 B). Leg setation: Tr 1 (v’), Fe 3 (d, l’, bv”), Ge 3(1) (d, l’, l”, σ), Ti 4(1) (d, l’, v’, v”, φ), Ta 7(1) (p’ξ, p”, tc ’, tc”, u’, u”, ε, ω). Setae (u) distinctly bifurcate; p” with several large barbs; tc” blunt-ended. Empodium about half as long as tarsal claws. Leg III ( Fig. 16 View FIGURE 16 A) Leg setation: Tr 1 (v’), Fe 3 (d, v’, ev’), Ge 1 (l’), Ti 3(1) (d, v’, v”, φ), Ta 5 (tc ’, tc”, p”, u’, u”). Claws and empodium of same shape as on tarsus II. Seta (u) distinctly bifurcate; setae p” and (v) of tibia weakly barbed. Setae tc ” blunt-ended. Leg IV ( Fig. 16 View FIGURE 16 B, 18D). Leg setation: Tr 0, Fe 1/2 (d, v’, ev’), Ge 2 (d, v’), Ti 3 (d, v’, v”), Ta 5 (p’, p”, tc, u’, u”). Setae (u) distinctly bifurcate; setae (p) and (v) of tibia weakly barbed; seta tc blunt-ended.

MALE (Fig, 19). In general similar to female. Genital area with 6 pairs of aggenital setae and 10 pairs of genital setae ( Fig. 19 View FIGURE 19 A). Genital setae g 1-7 branched. Genitalia with 10 pairs of eugenital setae ( Fig.19 View FIGURE 19 B). Seta eu 5 thickened and bifurcate.

LARVA ( Figs. 20–22 View FIGURE 20 View FIGURE 21 View FIGURE 22 ). Length (n =28) of idiosoma 265–280, width 105–120. Gnathosoma ( Figs. 21 View FIGURE 21 ) similar to that of female, but subcapitulum with three pairs of setae (or 2 absent) and seta ul’ of palptarsus simple. Idiosoma ( Fig. 20 View FIGURE 20 A). Hysterosomal setae more strongly barbed than in female. Lengths of idiosomal setae: ve 13, sci 40, sce 23, c 1 15–16, c 2 52–53, d 14, e 16–18, f 1 22, f 2 50, h 1 21–23, h 2 36–40, ps 1 11–14, ps 2 10–11, ps 3 13–15, 1 a 26–27, 1 b 15–17, 2 a 18–21, 3 a 15–17, 3 b 26–27. Legs ( Fig. 22 View FIGURE 22 ). Lengths of legs: leg I 100–105, leg II 69 –78, leg III 8 0–83. Leg I ( Fig. 22 View FIGURE 22 A). Leg setation: Tr 0, Fe 7 (d, l’, l”, v’, v”, d 1, bv”), Ge 7(1) (d, l’, l”, v’, v”, l’ 1, l” 1, σ), Ti 8(1) (d, l’, l”, v’, v”, k, l’ 1, l” 1, φ), Ta 12(1) (p’ξ, p”ξ, tc’, tc”, ft’, ft”, u’, u”, s, pl”, pv’, pv”, ω 1). Setae (tc) and (ft) simple; seta tc” blunt-ended. Empodium as long as tarsal claws. Leg II ( Fig. 22 View FIGURE 22 B). Leg setation: Tr 0, Fe 3 (d, l’, bv”), Ge 3(1) (d, l’, l”, σ), Ti 4(1) (d, l’, v’, v”, φ), Ta 6(1) (p’ξ, tc ’, tc”, u’, u”, ε, ω). Empodium slightly longer than tarsal claws. Seta tc” blunt-ended. Leg III ( Fig. 22 View FIGURE 22 C). Leg setation: Tr 0, Fe 3 (d, v’, ev’), Ge 1 (l’), Ti 3(1) (d, v’, v”, φ), Ta 4 (tc ’, tc”, u’, u”). Empodium as on tarsus II. Setae (tc) blunt-ended.

PROTONYMPH ( Figs. 23–26 View FIGURE 23 View FIGURE 24 View FIGURE 25 View FIGURE 26 ). Length of idiosoma 330–335, width 135. Gnathosoma ( Figs. 24 View FIGURE 24 ) similar to that of larva, but subcapitulum with four pairs of setae (or 2 added). Idiosoma ( Fig. 23 View FIGURE 23 A). Idiosomal dorsum as in larva. Coxal field III with two pairs of setae (3 b, 3 c). With three pairs of adanal setae. Lengths of idiosomal setae: ve 10–11, sci 39–45, sce 25–29, c 1 16–17, c 2 52–56, d 15, e 14–16, f 1 18–20, f 2 44–50, h 1 21–22, h 2 56–39, ps 1 19– 20, ps 2 15–16, ps 3 22–27, ad 1 9–15, ad 2 3–10, ad 3 8–12, 1 a 25–27, 1 b 14–16, 1 c 10–13, 1 d 8–10, 2 a 19–21, 2 b 18– 21, 3 a 16–19, 3 b 25–30, 3 c 15–18, ag 1 12–13. Legs ( Figs. 25 View FIGURE 25 , 26 View FIGURE 26 ). Lengths of legs: leg I 115–125, leg II 79 –86, leg III 90 –95, leg IV 99 –105. Leg I ( Fig. 25 View FIGURE 25 A). Leg setation: Tr 0, Fe 7 (d, l’, l”, v’, v”, d 1, bv”), Ge 7(1) (d, l’, l”, v’, v”, l’ 1, l” 1, σ), Ti 8(1) (d, l’, l”, v’, v”, k, l’ 1, l” 1, φ), Ta 14(1) (p’ξ, p”ξ, tc’ξ, tc”ξ, ft’ξ, ft”, a’, a”, u’, u”, s, pl”, pv’, pv”, ω 1). Setae (tc) and ft’ eupathidion-like; seta ft” simple. Empodium about 1/3 as long as tarsal claws. Leg II ( Fig. 25 View FIGURE 25 B) as in female. Leg III ( Fig. 26 View FIGURE 26 A) as in female. Leg IV ( Fig. 26 View FIGURE 26 B). Leg setation: Tr 0, Fe 0, Ge 2 (d. v’), Ti 2 (d, v’), Ta 3 (tc, u’, u”). Empodium longer than tarsal claws.

DEUTONYMPH ( Fig. 27 View FIGURE 27 ). Length of idiosoma 375, width 130. Gnathosoma as in protonymph. Idiosoma. Idiosomal dorsum as in female. Idiosomal venter ( Fig. 27 View FIGURE 27 B) typical for the deutonymphs of Paratydeidae . Lengths of idiosomal setae: ve 14, sci 48, sce 29, c 1 15, c 2 59, d 16, e 18, f 1 20, f 2 54, h 1 23, h 2 40, ps 1 22, ps 2 17, ps 3 36, ad 1 18, ad 2 14, ad 3 20, 1 a 27, 1 b 18, 1 c 13, 1 d 11, 2 a 25, 2 b 26, 2 c 10, 3 a 18, 3 b 30, 3 c 18, 4 a 16, ag 1-2 18, g 1-2 13. Legs ( Fig. 27 View FIGURE 27 A). Lengths of legs: leg I 125, leg II 91, leg III 91, leg IV 115. Leg I ( Fig. 27 View FIGURE 27 A). Leg setation: Tr 0, Fe 2/5 (d, l’, l”, v’, v”, d 1, bv”), Ge 7(1) (d, l’, l”, v’, v”, l’ 1, l” 1, σ), Ti 8(1) (d, l’ξ, l”, v’, v”, k, l’ 1, l” 1, φ), Ta 14(2) (p’ξ, p”ξ, tc’ξ, tc”ξ, ft’ξ, ft”ξ, a’, a”, u’, u”, s, pl”, pv’, pv”, ω 1, ω 2). Seta ft” of tarsus and l’ of tibia eupathidion-like. Femur I divided into basi- and telofemur. Legs II–IV as in female.

TRITONYMPH ( Fig. 28 View FIGURE 28 ). Gnathosoma as in deutonymph. Length of idiosoma 450, width 130. In general very similar to female. Genital area of female tritonymph ( Fig. 28 View FIGURE 28 B) with three to four pairs of aggenital and four pairs of simple genital setae, male tritonymph ( Fig. 28 View FIGURE 28 C) with four pairs of aggenital setae and four pairs of genital setae, genital setae g 1-3 branched. Lengths of idiosomal setae: ve 14, sci 53, sce 26, c 1 16, c 2 60, d 16, e 16, f 1 21, f 2 49, h 1 26, h 2 45, ps 1 24, ps 2 22, ps 3 39, ad 1 21, ad 2 19, ad 3 17, 1 a 29, 1 b 18, 1 c 12, 1 d 15, 2 a 24, 2 b 30, 2 c 11, 3 a 23, 3 b 30, 3 c 19, 4 a 21, 4 b 12, ag 1-2 18, ag 3 15, g 1-4 9–11. Legs. Lengths of legs: leg I 140, leg II 96, leg III 105, leg IV 120. Leg I ( Fig. 28 View FIGURE 28 A). Leg setation as in female. Seta d of tibia simple. Legs II–IV as in female.

Type material. Female holotype, slide #OK 021114, RUSSIA, Southern Ural, Zyuratkul National Park, 54°55'28.9"N, 59°13'47.4"E, from moss, 2 November 2014, coll. O. Klimova; paratypes: 40 females, 32 males, 28 larvae, 44 protonymphs, 9 deutonymphs, 25 female tritonymphs, 8 male tritonymphs, same data. GoogleMaps

Type deposition: The holotype and most of paratypes are deposited in the mite collection of the Tyumen State University Museum of Zoology , Tyumen, Russia ; eight female and three male paratypes are deposited in the mite collection of the Zoological Institute of RAS, St. Petersburg, Russia .

Etymology. The name of the new species refers to its distribution in the Ural region of Russia.

Differential diagnosis. The female of this new species is very similar to S. anatolicus Dönel et al., 2012 by having the same idiosomal and leg setation and similar lengths of idiosomal setae. The female of a new species differs from S. anatolicus by the presence of three eupathidia on palptarsus (vs. two in S. anatolicus ) and by the eupathidion-like seta d of tibia I (simple in S. anatolicus ). The female tritonymph of the new species differs from S. anatolicus by having longer setae f 1 and h 1 (21, 26 vs. 17–18, 20–22, respectively in S. anatolicus ).