Eustigmaeus varius, Dönel, Güldem & Doğan, Salih, 2011

Dönel, Güldem & Doğan, Salih, 2011, The stigmaeid mites (Acari: Stigmaeidae) of Kelkit Valley (Turkey), Zootaxa 2942, pp. 1-56 : 13-16

Eustigmaeus varius sp. nov.

Holotype. Female (Figure 8). Length of body 290 (275–308), width 188 (178–206).

Dorsum. Dorsal shields covered with oval dimples. Propodosomal shield with four pairs of setae (vi, ve, sce, sci) and a pair of eyes. Hysterosomal shield with six pairs of setae (c 1, d 1, d 2, e 1, e 2, f 1). Suranal shield tucked under body, with two pairs of setae (h 1,2). Fossettes on dorsal shields as illustrated. Dorsal body setae short, stick-shaped, with numerous spinules and hyaline sheath. Setae e 1 and f 1 cracked distally. Shapes of setae c1 and d 1 varies, these setae not cracked distally in many specimens, but in holotype and only one paratype cracked distally. Dimensions of setae as follows: vi 40 (37–40); ve 30 (27–33); sci 40 (37–43); sce 38 (35–40); c 1 43 (40–45); c 2 38 (35–40); d 1 32 (30–35); d 2 38 (35–40); e 1 38 (36–42); e 2 40 (38–43); f 1 45 (40–48); h 1 40 (38–40); h 2 25 (20–25). Distances between setae: vi-vi 25 (20–25); ve-ve 70 (65–73); vi-ve 38 (35–40); sci-sci 133 (130–135); ve-sci 40 (35–42) scesce 160 (156–165); sci-sce 35 (30–40); c 1 -c 1 73 (67–75); c 1 -d 1 65 (60–70); c 1 -d 2 65 (62–70); d 1 -d 1 85 (83–88); d 2 -d 2 172 (165–175); d 1 -d 2 55 (50–56); e 2 -e 2 150 (145–155); d 1 -e 1 63 (62–65); e 1 -e 1 73 (70–74); e 1 -e 2 40 (35–42); f 1 -f 1 68 (65–70); e 1 -f 1 38 (36–38); h 1 -h 1 36 (32–38); h 2 -h 2 50 (45–52); h 1 -h 2 20 (18–20).

Venter. Humeral shields situated ventro-laterally between coxae II–III, similar pattern as dorsal shields, bearing setae c 2. Humeral region without callosities. Coxisternal shields completely divided, bearing three pairs of setae (1a, 3a, 4a). Aggenital shield with two pairs of setae (ag 1,2) and anogenital covers bearing three pairs of setae (ps 1- 3). Dimensions of setae as follows: ag 1 10 (8–10); ag 2 13 (10–15); ps 1 10 (8–10); ps 2 13 (10–15); ps 3 20 (18–23).

Legs. Leg I 168 (160–172), leg II 100 (94–112), leg III 113 (110–124), leg IV 153 (150–168). Chaetotaxy of leg segments as follows: coxae 2–2–2–2, trochanters 1–1–2–1, femora 6–5–3–2, genua 4(κ)–4(κ)–1–1, tibiae 7(ϕ,ϕρ)–6(ϕρ)–6(ϕρ)–6(ϕρ), tarsi 14(ω)–10(ω)–8(ω)–7. Genua I and II with solenidion κ. All tarsi with solenidion ω.

Gnathosoma . Chelicera 113 (108–118), palp 100 (98–115). 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 (8–15); n 15 (10–18); distances between setae: m-m 13 (10–20); n-n 20 (18–25); m-n 13 (10–15).

Deutonymph Female ( Figure 9 ). Length of body 275, width 160.

FIGURE 8. Eustigmaeus varius sp. nov. female—A, dorsal view of idiosoma; B, ventral view of idiosoma; C, setae c 1, d 1, e 1, e 2, f 1; D, leg I; E, leg II; F, leg III; G, leg IV.

Dorsum. Dorsal shields covered with oval dimples as in female. Propodosomal shield with three pairs of setae. Eyes located between setae ve and sci. Setae sce located on auxiliary shields. Central shield with two pairs of setae (c 1 and d 1). Seta e 1 placed on median zonal shield, entire. 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 as in female. Dimensions of setae as follows: vi 33; ve 30; sci 30; sce 32; c 1 35; c 2 25; d 1 28; d 2 28; e 1 33; e 2 30; f 1 35; h 1 30; h 2 18. Distances between setae: vi-vi 15; ve-ve 60; vi-ve 20; sci-sci 112; ve-sci 30; c 1 -c 1 55; c 1 -d 1 50; d 1 -d 1 62; e 1 -e 1 53; h 1 -h 1 25; h 2 -h 2 48; h 1 -h 2 15.

Venter. Humeral shields placed on lateral of body, with setae c 2. Coxisternal shields completely separated, bearing three pairs of setae (1a, 3a and 4a). Aggenital shield with one pair of setae (ag 1) and anogenital covers bearing three pairs of setae (ps 1-3).

Legs. Leg I 140, leg II 84, leg III 100, leg IV 130. Chaetotaxy of leg segments as follows: coxae 2–2–2–2, trochanters 1–1–2–0, femora 6–5–3–2, genua 4(κ)–4(κ)–0–0, tibiae 7(ϕ,ϕρ)–6(ϕρ)–6(ϕρ)–6(ϕρ), tarsi 12(ω)–8(ω)– 7(ω)–6.

Gnathosoma . Chelicera 60, palp 80. The number of subcapitular setae as in female. Dimension of setae: m 8; n 10; distances between setae: m-m 15; n-n 18; m-n 15.

Male and other immature stages. Unknown.

Etymology. The name of this new species, varius , refers to the variation in the shapes of dorsal body setae c 1 and d 1.

Type materials. Holotype Ƥ, 2 ƤƤ paratypes and 1 deutonymph Ƥ paratype from decayed bark of Pinus sp., 40°18'27'' N, 37°35'01'' E, 996 m, Reşadiye, 11 V 2008; ZMAU.

Remarks. This new species is similar to Eustigmaeus variolatus Barilo, 1987 in the number of aggenital setae, absence of humeral callosities, shape of dorsal body setae and dorsal ornamentation. However, it can be distinguished from the latter by the dorsal body setae with hyaline sheaths, setae e 1 and f 1 cracked distally and setae ve the shortest of the dorsal body setae.

Figures

FIGURE 9. Eustigmaeus varius sp. nov. deutonymph female—A, dorsal view of idiosoma; B, ventral view of idiosoma; C, leg I; D, leg II; E, leg III; F, leg IV.