Stigmaeus harsitensis, Doğan & Doğan & Erman, 2017

Doğan, Sibel, Doğan, Salih & Erman, Orhan, 2017, Description of five new species of the genus Stigmaeus Koch (Acari: Raphignathoidea: Stigmaeidae) from Turkey, Zootaxa 4276 (4), pp. 451-478 : 463-469

Stigmaeus harsitensis sp. nov.

Female (n = 5) ( Figs. 15 , 16 ). Body oval and 342 (339–394) long, 176 (175–193) wide. Gnathosoma 71 (69–72). Leg I 168 (164–177), leg II 124 (120–134), leg III 115 (111–121), leg IV 138 (134–148).

Dorsum of idiosoma. All dorsal shields smooth, without reticulation. Prodorsum typically with a large propodosomal shield, bearing eyes, post-ocular bodies and three pairs of setae (vi, ve, sci). Also, an apodemal marking present between post-ocular bodies. pob large [26 (21–24)], nearly 3 times diameter of eyes [7 (6–7)]. sce on minute individual platelets, located laterally. c 1 and d 1 situated on central shield. d 2 located on marginal shield. e 1 on divided median zonal shields. e 2 located on lateral zonal shields. Intercalary shields divided, with a pair of setae f 1. Suranal shield entire and bearing two pairs of subequal setae (h 1, 2), h 3 absent. Humeral shields situated ventrolaterally, with setae c 2. Dorsum with 13 pairs of setae. All dorsal setae smooth, ve the longest, almost four times longer than vi. Lengths of dorsal idiosomal setae: vi 22 (20–22), ve 83 (82–92), sci 16 (17–20), sce 53 (49– 55), c 1 20 (19–21), c 2 64 (61–68), d 1 19 (19–21), d 2 20 (20–22), e 1 18 (18–20), e 2 33 (34–36), f 1 37 (35–38), h 1 37 (36–37), h 2 39 (40–42). Distances between dorsal idiosomal setae: vi - vi 21 (20–24), ve -ve 31 (30–33), vi -ve 20 (20– 22), sci -sci 77 (72–76), ve -sci 20 (20–21), sce -sce 112 (108–111), sci -sce 19 (16–18), c 1- c 1 40 (40–43), d 2- d 2 121 (120–125), c 1- d 1 60 (58–61), c 1- d 2 58 (58–59), d 1- d 1 48 (47–49), d 2- d 1 36 (37–42), e 2- e 2 100 (102–105), d 2- e 2 65 (62– 66), d 1- e 1 54 (51–55), d 1- e 2 53 (53–54), e 1- e 1 44 (41–45), e 2- e 1 30 (29–31), f 1- f 1 61 (61–68), e 1- f 1 27 (26–29), e 2- f 1 37 (36–38), f 1- h 1 33 (32–34), f 1- h 2 26 (27–31), h 1- h 1 25 (22–25), h 2- h 2 69 (64–67), h 1- h 2 18 (18–19). Ratios of setae: ve / sci 5.1 (4.6), ve / sce 1.5 (1.6).

Venter of idiosoma. All ventral shields smooth. Coxisternal shields divided and bearing three pairs of intercoxal setae (1a, 3a, 4a). Lengths and distances of these setae: 1a 19 (18–20), 3a 19 (18–20), 4a 20 (20–21), 1a -1a 18 (18–20), 3a -3a 26 (27–35), 4a -4a 24 (24–25). Anal and genital shields fused and bearing a pair of genital (g 1), three of pairs of pseudanal setae (ps 1-3). ps 1 conspicuously longer than ps 2 and ps 3. Aggenital shields entire, with three pairs of setae (ag 1-3). Lengths of setae: ag 1 18 (18–20), ag 2 17 (18–19), ag 3 18 (18–19), g 1 5 (5–6), ps 1 34 (32–35), ps 2 16 (16–18), ps 3 11 (10–11).

Gnathosoma . Chelicerae 99 (100–110), palp 85 (80–86). Subcapitulum with two pairs of adoral setae (or 1,2) and two pairs of subcapitular setae, m 14 (13–15), n 13 (13–14) in length, distances between subcapitular setae: m - m 19 (17–20), n -n 24 (24–28), m -n 14 (14–15).

Legs. Leg segments smooth. Counts of setae and solenidia on legs I–IV: coxae 2–2–2–2, trochanters 1–1–2–1, femora 6–4–3–2, genua 3(+1κ)–3(+1κ)–1–1, tibiae 5(+1φ+1φρ)–5(+1φρ)–5(+1φρ)–5(+1φρ), tarsi 13(+1ω)– 9(+1ω)–7(+1ω)–7(+1ω).

Male (n = 1) ( Figs. 17 , 18 ). Length of body 254, width 133. Gnathosoma 55. Leg I 133, leg II 104, leg III 96, leg IV 115.

Dorsum of idiosoma. Dorsal idiosomal shields without patterns, counts and shape of setae as in female, but apodemal marking absent, pob (18) smaller than those of female and about 2.5 times diameter of eyes (7). Lengths of dorsal idiosomal setae: vi 13, ve 65, sci 11, sce 34, c 1 13, c 2 55, d 1 12, d 2 13, e 1 11, e 2 26, f 1 26, h 1 20, h 2 29. Distances between dorsal idiosomal setae: vi - vi 21, ve -ve 27, vi -ve 16, sci -sci 60, ve -sci 18, sce -sce 82, sci -sce 12, c 1- c 1 34, d 2- d 2 102, c 1- d 1 38, c 1- d 2 47, d 1- d 1 36, d 2- d 1 32, e 2- e 2 75, d 2- e 2 51, d 1- e 1 42, d 1- e 2 43, e 1- e 1 50, e 2- e 1 21, f 1- f 1 46, e 1- f 1 19, e 2- f 1 23, f 1- h 1 25, f 1- h 2 28, h 1- h 1 22, h 2- h 2 38, h 1- h 2 9.

Venter of idiosoma. Lengths and distances of intercoxal setae: 1a 14, 3a 15, 4a 17, 1a -1a 18, 3a -3a 26, 4a -4a 21. Three pairs of aggenital setae (ag 1-3) on aggenital shields. Anal shields located sub-terminally and bearing three pairs of pseudanal setae (ps 1-3). Lengths of these setae: ag 1 11, ag 2 10, ag 3 11, ps 1 6, ps 2 5, ps 3 3.

Gnathosoma . Chelicerae 78, palp 77. Lengths and distances of subcapitular setae: m 10, n 11, m -m 12, n -n 15, m -n 5.

Legs. Counts of setae and solenidia on legs I–IV as in female, except tarsi I–IV with two solenidia.

Deutonymph (n = 1) ( Figs. 19 , 20 ). Idiosoma 260 long, 151 wide. Length of gnathosoma 54. Leg I 138, leg II 109, leg III 106, leg IV 117.

Dorsum of idiosoma. As in female, but apodemal marking absent. Eyes 5, pob 17 in diameter. Lengths dorsal idiosomal setae: vi 13, ve 65, sci 12, sce 40, c 1 16, c 2 60, d 1 15, d 2 13, e 1 16, e 2 37, f 1 37, h 1 34, h 2 27. Distances between dorsal idiosomal setae: vi - vi 23, ve -ve 30, vi -ve 18, sci -sci 68, ve -sci 19, sce -sce 98, sci -sce 17, c 1- c 1 37, d 2- d 2 108, c 1- d 1 45, c 1- d 2 52, d 1- d 1 37, d 2- d 1 34, e 2- e 2 84, d 2- e 2 54, d 1- e 1 46, d 1- e 2 50, e 1- e 1 32, e 2- e 1 22, f 1- f 1 47, e 1- f 1 19, e 2- f 1 25, f 1- h 1 22, f 1- h 2 18, h 1- h 1 16, h 2- h 2 39, h 1- h 2 8.

Venter of idiosoma. Similar to adult female but without genital setae. Lengths and distances of intercoxal setae: 1a 17, 3a 17, 4a 20, 1a -1a 21, 3a -3a 23, 4a -4a 15. Aggenital shields with three pairs of aggenital setae; ag 1 9, ag 2 11, ag 3 6. Anal shields bearing three pairs of pseudanal setae, ps 1> ps 2> ps 3 and ps 1 15, ps 2 7, ps 3 4.

Gnathosoma . Chelicerae 76, palp 84. Lengths and distances of subcapitular setae: m 11, n 9, m -m 17, n -n 22, m -n 11.

Legs. Counts of setae and solenidia on legs I–IV: coxae 2–2–2–2, trochanters 1–1–2–0, femora 6–4–3–2, genua 3(+1κ)–2(+1κ)–0–0, tibiae 5(+1φ+1φρ)–5(+1φρ)–5(+1φρ)–5(+1φρ), tarsi 13(+1ω)–9(+1ω)–7(+1ω)–7(+1ω).

Protonymph (n = 2) ( Figs. 21 , 22 ). Length of body 199–254, width 103–138. Gnathosoma 48–49. Leg I 110– 117, leg II 93 –99, leg III 85 –93, leg IV 82 –90.

Dorsum of idiosoma. As in deutonymph, but pob absent. Lengths of dorsal idiosomal setae: vi 13–14, ve 55– 56, sci 9–9, sce 31–33), c 1 12–13, c 2 40–42, d 1 12–13, d 2 9–9, e 1 12–13, e 2 27–28, f 1 27–28, h 1 24–25, h 2 13–15. Distances between dorsal idiosomal setae: vi - vi 26–27, ve -ve 32–33, vi -ve 17–18, sci -sci 56–60, ve -sci 14–17, sce - sce 98–103, sci -sce 22–23, c 1- c 1 30–31, d 2- d 2 95–99, c 1- d 1 43–43, c 1- d 2 41–48, d 1- d 1 26–27, d 2- d 1 33–33, e 2- e 2 80– 82, d 2- e 2 45–47, d 1- e 1 37–37, d 1- e 2 45–45, e 1- e 1 21–22, e 2- e 1 27–29, f 1- f 1 30–33, e 1- f 1 25–26, e 2- f 1 30–32, f 1- h 1 20–23, f 1- h 2 9–10, h 1- h 1 12–13, h 2- h 2 27–30, h 1- h 2 7–9.

Venter of idiosoma. 1a and 3a present, but 4a absent; lengths and distances of these setae: 1a 12–13, 3a 14–15, 1a–1a 18–19, 3a–3a 32–33. Genital setae absent. Aggenital shield having only a pair of setae; ag 1 11–12. Anal shields bearing three pairs of pseudanal setae (ps 1-3). Lengths of pseudanal setae: ps 1 11–11, ps 2 7–8, ps 3 5–5.

Gnathosoma . Chelicerae 66–67, palp 63–65. Only a pair of subcapitular setae (m) present, length and distance of this setae m 8–9, m -m 17–18.

Legs. Counts of setae and solenidia on legs I–IV: coxae 2–2–2–0, trochanters 0–0–1–0, femora 4–4–3–1, genua 3(+1κ)–2(+1κ)–0–0, tibiae 5(+1φ+1φρ)–5(+1φρ)–5(+1φρ)–5(+1φρ), tarsi 13(+1ω)–9(+1ω)–7(+1ω)–7(+1ω).

Larva (n = 1) ( Fig. 23 ). Length of body 163, width 102. Gnathosoma 40. Leg IV absent, leg I 96, leg II 74, leg III 77.

Dorsum of idiosoma. Apodemal marking and pob absent. Eyes 6 in diameter. Lengths of dorsal idiosomal setae: vi 10, ve 51, sci 7, sce 14, c 1 10, c 2 34, d 1 11, d 2 10, e 1 15, e 2 23, f 1 24, h 1 22, h 2 21. Distances between dorsal idiosomal setae: vi - vi 22, ve -ve 28, vi -ve 9, sci -sci 56, ve -sci 16, sce -sce 85, sci -sce 15, c 1- c 1 28, d 2- d 2 69, c 1- d 1 34, c 1- d 2 37, d 1- d 1 20, d 2- d 1 20, e 2- e 2 55, d 2- e 2 30, d 1- e 1 26, d 1- e 2 25, e 1- e 1 16, e 2- e 1 18, f 1- f 1 26, e 1- f 1 15, e 2- f 1 19, f 1- h 1 7, f 1- h 2 4, h 1- h 1 10, h 2- h 2 24, h 1- h 2 4.

Venter of idiosoma. Genital setae and setae 4a absent as in protonymph, with the difference of lacking aggenital setae. Lengths of intercoxal setae: 1a 12, 3a 13, 1a -1a 19, 3a -3a 20. Anal shields bearing three pairs of pseudanal setae; ps 1 4, ps 2 4, ps 3 3.

Gnathosoma . Chelicerae 53, palp 55. Subcapitulum with two pairs of adoral setae (or 1,2), without subcapitular setae.

Legs. Counts of setae and solenidia on legs I–III: coxae 1–0–0, trochanters 0–0–0, femora 4–4–3, genua 2(+1κ)–2–0, tibiae 5(+1φ+1φρ)–5(+1φρ)–5(+1φρ), tarsi 13(+1ω)–9(+1ω)–7(+1ω).

Etymology. The name of this new species, harsitensis , is derived from Harşit Valley where it was collected.

Type materials. Holotype female from grassy litter under Cornus sp., 40° 22' 17''N, 39° 49' 19''E, 1820 m.a.s.l., 0 8 March 2014, Harşit Valley , TURKEY. Paratypes: 7 females from moss, 40° 43' 47''N, 39° 13' 00''E, 1464 m.a.s.l., 11 April 2014 ; 11 females from moss and lichen on soil, 40° 32' 37''N, 39° 28' 19''E, 1800 m.a.s.l., 23 April 2014; 21 females, 1 protonymph and 1 larva from mossy soil, 40° 57' 52''N, 38° 53' 17''E, 32 m.a.s.l., 0 2 May 2014; 1 female from grassy soil, 40° 22' 11''N, 39° 49' 32''E, 1925 m.a.s.l., 17 May 2014; 7 females and 1 protonymph from grassy soil, 40° 23' 10''N, 39° 41' 35''E, 1380 m.a.s.l., 30 May 2014; 7 females from grassy soil, 40° 22' 12''N, 39° 49' 31''E, 1930 m.a.s.l., 30 May 2014; 11 females and 1 male from grassy and mossy soil, 40° 38' 41''N, 39° 08' 52''E, 714 m.a.s.l., 10 October 2014; 6 females from grassy soil, 40° 37' 54''N, 39° 06' 54''E, 799 m.a.s.l., 10 October 2014; 5 females and 1 protonymph from grass on soil, 40° 33' 11''N, 39° 28' 53''E, 1419 m.a.s.l., 23 October 2014; 1 female from grass and moss, 40° 38' 28''N, 39° 07' 36''E, 907 m.a.s.l., 0 9 April 2015; 2 females from grass and moss, 39° 48' 25''N, 39° 22' 49''E, 482 m. a.s.l., 16 April 2015, Harşit Valley , TURKEY . 2 females and 1 deutonymph from grassy soil, 40° 41' 09''N, 39° 03' 07''E, 938 m.a.s.l., 0 8 March 2014; 5 females from cow dung, 40° 41' 09''N, 39° 03' 07''E, 938 m. a.s.l., 0 8 March 2014, 12 females from moss and grass, 40° 41' 09''N, 39° 03' 07''E, 938 m. a.s.l., 0 8 March 2014, Örümcek Forests , TURKEY.

Remarks. Stigmaeus harsitensis sp. nov. resembles S. macroposbus Liang & Hu, 1987 , S. longisetosus Liang & Hu, 1987 , Stigmaeus callunae Evans, 1954 , S. pilatus Kuznetsov, 1978 and S. angustus Dönel & Doğan, 2011 in general appearance.

It is easily separated from S. macroposbus and S. longisetosus by: genu III with one seta, the central shield narrower and longer than that of S. macroposbus and presence of an apodemal marking (absent in S. macroposbus ); setae e 2 short and not extending to base of setae f 1 in the new species, but setae e 2 long and reaching to base of setae f 1 in S. longisetosus ; in the new species ratio ve / sce 1.5 vs. 3.23 and 1.9 in S. macroposbus and S. longisetosus , respectively ( Liang & Hu 1987).

Stigmaeus harsitensis sp. nov. can be distinguished from S. callunae by the presence post-ocular bodies (absent in the latter), ratio ve / sce 1.5 in new species but 2.1 in S. callunae , the central shield’s posterior margin, toward the median zonal shields, is protruding in the new species vs. smooth in S. callunae ( Evans 1954) .

The new species nearly exhibits all characters of S. pilatus . However it can be distinguished from S. pilatus by having the post-ocular bodies smaller than those of S. pilatus and all aggenital setae on the same shield (ag 1 separated from other aggenitals in S. pilatus ) ( Kuznetsov 1978).

Stigmaeus harsitensis sp. nov. can be distinguished from S. angustus by the presence of post-ocular bodies (absent in S. angustus ), the intercalary shields smaller than those of S. angustus , and setae e 2 longer than setae d 2 (contrary to S. angustus ) ( Dönel & Doğan 2011).

Figures

FIGURE 15. Stigmaeus harsitensis sp. nov. (Female) A. Dorsal view of idiosoma, B. Ventral view of idiosoma.

FIGURE 16. Stigmaeus harsitensis sp. nov. (Female) A. Leg I, B. Leg II, C. Leg III, D. Leg IV.

FIGURE 17. Stigmaeus harsitensis sp. nov. (Male) A. Dorsal view of idiosoma, B. Ventral view of idiosoma.

FIGURE 18. Stigmaeus harsitensis sp. nov. (Male) A. Leg I, B. Leg II, C. Leg III, D. Leg IV.

FIGURE 19. Stigmaeus harsitensis sp. nov. (Deutonymph) A. Dorsal view of idiosoma, B. Ventral view of idiosoma.

FIGURE 20. Stigmaeus harsitensis sp. nov. (Deutonymph) A. Leg I, B. Leg II, C. Leg III, D. Leg IV.

FIGURE 21. Stigmaeus harsitensis sp. nov. (Protonymph) A. Dorsal view of idiosoma, B. Ventral view of idiosoma.

FIGURE 22. Stigmaeus harsitensis sp. nov. (Protonymph) A. Leg I, B. Leg II, C. Leg III, D. Leg IV.

FIGURE 23. Stigmaeus harsitensis sp. nov. (Larva) A. Dorsal view of idiosoma, B. Ventral view of idiosoma.