Stigmaeus ayyildizi, Dönel, Güldem & Doğan, Salih, 2011

Dönel, Güldem & Doğan, Salih, 2011, The stigmaeid mites (Acari: Stigmaeidae) of Kelkit Valley (Turkey), Zootaxa 2942, pp. 1-56 : 36-37

Stigmaeus ayyildizi sp. nov.

Holotype. Female ( Figure 17 ). Length of body 305 (300–325), width 143 (135–147).

Dorsum. No reticulation on dorsal shields. Propodosomal shield with three pairs of setae (vi, ve, sci). Eyes and post-ocular bodies located between setae ve and sci. Apodemal marking on propodosomal shield. Setae sce located on auxiliary shields. Central shield with three pairs of setae (c 1, d 1, e 1). In holotype specimen posterior margin of central shield indenting forward ( Figure 17 A), those of the other specimens smooth ( Figure 17 H). Setae d 2 located on marginal shields and setae e 2 located on lateral zonal shields. Intercalary shield divided, with setae f 1. Suranal shield entire, with two pairs of setae (h 1,2). Dorsal body setae faintly serrated. Dimensions of setae as follows: vi 18 (15–20); ve 88 (80–95); sci 15 (13–18); sce 45 (40–57); c 1 18 (18–25); c 2 87 (85–97); d 1 20 (18–25); d 2 27 (25–33); e 1 20 (18–25); e 2 47 (43–50); f 1 43 (40–45); h 1 40 (37–43); h 2 43 (40–45); Distances between setae: vi-vi 33 (30– 37); ve-ve 40 (37–43); vi-ve 25 (20–27); sci-sci 75 (73–78); ve-sci 25 (20–27); c 1 -c 1 40 (37–45); c 1 -d 1 50 (45–55); d 1 -d 1 43 (35–47); d 1 -e 1 53 (50–57); e 1 -e 1 40 (35–47); h 1 -h 1 35 (30–43); h 2 -h 2 67 (63–75); h 1 -h 2 20 (18–25).

Venter. Setae c 2 placed on humeral shields. Coxisternal shields divided along midline, bearing three pairs of setae (1a, 3a, 4a). Three pairs of aggenital setae (ag 1-3) located on the same shield. Genital cover bearing one pair of setae (g 1). Anal cover bearing three pairs of setae (ps 1-3). Dimensions of setae as follows: ag 1= ag 2: 13 (10–18); ag 3: 15 (12–20), g 1: 10 (8–15); ps 1: 18 (15–25); ps 2: 15 (13–18); ps 3: 12 (10–15).

Legs. Leg I 175 (160–183), leg II 120 (110–135), leg III 135 (125–147), leg IV 157 (153–167). Chaetotaxy of leg segments as follows: coxae 2–2–2–2, trochanters 1–1–2–1, femora 6–4–3–2, genua 4(κ)–4(κ)–1–1, tibiae 7(ϕ,ϕρ)–6(ϕρ)–6(ϕρ)–6(ϕρ), tarsi 14(ω)–10(ω)–8(ω)–8(ω). Genua I and II with solenidion κ. All tarsi with solenidion ω.

Gnathosoma . Chelicera 75 (73–80), palp 60 (57–68) long. Subcapitulum with two pairs of adoral setae (ro 1,2) distally and two pairs of subcapitular setae (m, n) proximally. Dimension of setae: m 10 (8–12); n 13 (10–15), distances between setae: m-m 15 (12–23); n-n 20 (20–25); m-n 15 (10–18).

Deutonymph Female ( Figure 18 ). Length of body 207, width 115.

Dorsum. Propodosomal shield with three pairs of setae (vi, ve, sci). Eyes and post-ocular bodies located between setae ve and sci. Apodemal marking on propodosomal shield. Setae sce located on auxiliary shields. Central shield with two pairs of setae (c 1, d 1). Seta e 1 placed on median zonal shields. Setae d 2 located on marginal shields and setae e 2 located on lateral zonal shields. Intercalary shield divided, with setae f 1. Suranal shield entire, with two pairs of setae (h 1,2). Dorsal body setae faintly serrated. Dimensions of setae as follows: vi 10; ve 75; sci 8; sce 35; c 1 15; c 2 80; d 1 18; d 2 20; e 1 15; e 2 40; f 1 38; h 1 35; h 2 40; Distances between setae: vi-vi 27; ve-ve 35; vi-ve 20; sci-sci 65; ve-sci 18; c 1 -c 1 35; c 1 -d 1 43; d 1 -d 1 35; h 1 -h 1 30; h 2 -h 2 58; h 1 -h 2 18.

Venter. Humeral shields in lateral position, with setae c 2. Coxisternal shields completely separated, bearing three pairs of setae (1a, 3a, 4a). Aggenital shield with three pairs of setae (ag 1-3). Genital setae absent. Anal covers bearing three pairs of setae (ps 1-3).

Legs. Leg I 160, leg II 115, leg III 130, leg IV 140. Chaetotaxy of leg segments as follows: coxae 2–2–2–2, trochanters 1–1–2–0, femora 6–4–3–2, genua 4(κ)–4(κ)–0–0, tibiae 7(ϕ,ϕρ)–6(ϕρ)–6(ϕρ)–6(ϕρ), tarsi 14(ω)–10(ω)– 8(ω)–8(ω).

Gnathosoma . As in female. Chelicera 67, palp 53. Dimension of setae: m 8; n 10, distances between setae: m-m 13; n-n 18; m-n 10.

Male and other immature stages. Unknown.

Etymology. This species is named in honour of Prof. Dr. Nusret Ayyıldız (Erciyes University, Kayseri, Turkey) for his great and valuable contributions to Acarology in Turkey.

Type materials. Holotype Ƥ, 6 paratypes ƤƤ, 1 deutonymph Ƥ from grassy soil, 40°27'23'' N, 37°02'51'' E, 362 m, between Reşadiye-Niksar, 08 XI 2008; ZMAU.

Remarks. This new species resembles Stigmaeus malekii Haddad, Bagheri & Khanjani, 2006 in lacking of reticulations on the dorsal shields, the central shield bearing three pairs of setae, divided intercalary shield, femur II with four setae and three pairs of aggenital setae located on the same shield. However, it can be distinguished from the latter by the presence of apodemal marking on the idiosoma, one pair of eyes, post-ocular bodies evident and different numbers of setae on leg genua I–II and tarsi I–II. Genua I–II have 4(κ)–4(κ) and tarsi I–II have 14(ω)– 10(ω) in the new species whereas these counts are 3–3, 13(ω)–8(ω) respectively in S. malekii .

Figures

FIGURE 17. Stigmaeus ayyildizi sp. nov. female—A, dorsal view of idiosoma; B, ventral view of idiosoma; C, palp; D, leg I; E, leg II; F, leg III; G, leg IV; H, posterior margin of central shield other specimens.

FIGURE 18. Stigmaeus ayyildizi sp. nov. deutonymph female—A, dorsal view of idiosoma; B, ventral view of idiosoma.