Mediolata obtecta, Dönel & Doğan, 2012

Dönel, Güldem & Doğan, Salih, 2012, Three new mite species of the genus Mediolata Canestrini (Acari, Stigmaeidae) from Turkey and re-description of Mediolata granaria Gonzalez-Rodriguez, Journal of Natural History 46 (11 - 12), pp. 683-699 : 694-699

Mediolata obtecta sp. nov.

( Figures 11–15 )

B

Type materials

Holotype female and two paratype females and two males from litter on forest floor, 40 ◦ 15 ′ 46 ′′ N, 38 ◦ 50 ′ 18 ′′ E, 1820 m, Alucra, 22 October 2007.

Holotype female ( Figures 11–13 )

Length of body 325 (288–330), width 175 (150–180).

Dorsum. All dorsal shields fused except the suranal shield, separated by striae. Dorsum completely covered with reticulate patterns, formed by polygonal cells, and each bearing 15–20 vacuoles, disposed around periphery of each cell. Eyes 10 (8–12) in diameter, located between setae ve and sci. Post-ocular bodies 21 (18–24) in diameter, located posterior of eyes. Dorsum with 12 pairs of setae, faintly serrate. Humeral shields and setae c 2 absent. Dimensions of setae as follows: vi 18 (14–20); ve 23 (18–25), sci 38 (30–43); sce 40 (35–43); c 1 33 (26–35); d 1 30 (30–38), d 2 23 (18–25); e 1 38 (35–40); e 2 35 (30–38); f 1 45 (40–50); h 1 25 (20–28); h 2 33 (28–35); distances between setae: vi–vi 20 (18–25); ve–ve 68 (63–70); vi–ve 38 (28–45); sci–sci 85 (75–95); ve–sci 35 (32–45); sce–sce 105 (94–115); sci–sce 43 (35–50); c 1 – c 1 55 (45–65); d 2 – d 2 133 (130–135); c 1 – d 1

A B A, B

60 (46–63); c 1 – d 2 58 (50–65); d 1 – d 1 63 (50–65); d 1 – d 2 50 (48–60), e 2 – e 2 130 (120–135); d 2 – e 2 53 (45–60); d 1 – e 1 70 (60–75); d 1 – e 2 55 (45–60); e 1 – e 1 43 (30–57); e 2 – e 1 45 (40–50); f 1 – f 1 63 (50–70); e 1 – f 1 33 (20–40); e 2 – f 1 63 (45–65); f 1 – h 1 38 (25–45); f 1 – h 2 28 (20–35); h 1 – h 1 35 (25–43); h 2 – h 2 75 (62–90); h 1 – h 2 25 (22–33).

Venter. Coxisternal shields absent. Venter completely covered with striae. Ventral podosoma with three pairs of setae (1a, 3a and 4a). Aggenital area with three pairs of aggenital setae (ag 1–3). Anogenital shields with one pair of genital setae (g 1) and three pairs of pseudanal setae (ps 1–3)

Legs. Leg I 168 (140–185); leg II 138 (120–158); leg III 125 (107–140); leg IV 150 (143–170). Counts of setae on leg segments as follows (solenidia in parenthesis): coxae

B

2–1–2–2, trochanters 1–1–1–1, femora 4–4–2–1, genua 2(Κ)–1–1–1, tibiae 6(ϕρ)–6(ϕρ)– 6(ϕρ)–5(ϕρ), tarsi 12(ω)–10(ω)–8(ω)–8(ω).

Gnathosoma . With two pairs of adoral setae (ro 1,2) distally, one pair of subcapitular setae (m) proximally. Length of subcapitular setae: m 20 (18–23); distance between the setae: m–m 22 (20–24). Chelicera 83 (70–90). Palp 91 (80–100), five–segmented, setal formula (from trochanters to tarsi): 0–2–2–3+1 claw–7 (including solenidion and eupathidium), eupathidium trifid distally.

Male ( Figures 14 , 15 )

Length of body (245–255), width (128–140).

Dorsum. As in female, but hysterosoma with suture on posterior of setae f 1. Dimensions of setae as follows: vi (15–20); ve (25–30), sci (30–33); sce (33–40); c 1 (25–30); d 1 (25–30), d 2 (25–35); e 1 (25–30); e 2 (28–30); f 1 (40–45); h 1 (18–20); h 2 (33–38); distances between setae: vi–vi (15–20); ve–ve (40–50); vi–ve (25–30); sci–sci (60–70); ve–sci (25–30); sce–sce (90–98); sci–sce (25–30); c 1 – c 1 (50–55); d 2 – d 2 (90–100); c 1 – d 1 (50–55); c 1 – d 2 (50–55); d 1 – d 1 (50–53); d 1 – d 2 (35–40), e 2 – e 2 (110–115); d 2 – e 2 (50–60); d 1 – e 1 (55–65); d 1 – e 2 (50–60); e 1 – e 1 (25–30); e 2 – e 1 (35–45); f 1 – f 1 (50–50); e 1 – f 1 (25–30); e 2 – f 1 (35–40); f 1 – h 1 (25–30); f 1 – h 2 (15–20); h 1 – h 1 (30–40); h 2 – h 2 (63–70); h 1 – h 2 (15–20).

Venter. As in female, but aggenital area with two pairs of aggenital setae. Anogenital shields with three pairs of pseudanal setae, setae ps 1 and ps 2 short and finger-shaped, setae ps 3 more slender and longer than others. Aedeagus evident.

Legs. Leg I (150–160); leg II (120–125); leg III (100–110); leg IV (130–140). Counts of setae on leg segments as follows (solenidia in parenthesis): coxae 2–1–2–2, trochanters 1–1–1–1, femora 4–4–2–1, genua 2(Κ)–1–1–1, tibiae 6(ϕρ)–6(ϕρ)–6(ϕρ)–5(ϕρ), tarsi 13(ω,ω ♂)–11(ω,ω ♂)–8(ω ♂)–8(ω ♂).

Gnathosoma . Palp (90–110) and chelicera (55–80). Length of subcapitular setae: m (18–20); distance between the setae: m–m (18–24). Palp chaetotaxy as in female.

Other immature stages

Unknown.

Etymology

The epithet obtecta derives from the Latin obtegere (to cover up), alluding to the dorsum being completely covered with reticulate patterns.

Remarks

The new species resembles Mediolata pini (Canestrini) in having two setae on palp femur, genu I with two setae and aggenital shield bearing three pairs of setae. However, it can be distinguished from the latter by dorsal shields fused except the suranal shield, and dorsum differently ornamented. This species further resembles Mediolata oleariae Wood, 1971 in general appearance; however, it can be distinguished from the latter by trochanter IV with one seta (lacking in M. oleariae ), setal formula of femora: 4–4–2–1 (5–4–3– 1 in M. oleariae ), and setal formula of genua: 1+1 Κ –1–1–1 (3+1 Κ –3–1– 1 in M. oleariae ).

Figures

Figure 11. Mediolata obtecta sp. nov., female – (A) Dorsal view of idiosoma; (B) ventral view of idiosoma.

Figure 12. Mediolata obtecta sp. nov., female – (A) Gnathosoma; (B) palp.

Figure 13. Mediolata obtecta sp. nov., female – (A) Leg I; (B) leg II; (C) leg III; (D) leg IV.

Figure 14. Mediolata obtecta sp. nov., male – (A) Dorsal view of idiosoma; (B) ventral view of idiosoma.

Figure 15. Mediolata obtecta sp. nov., male – (A) Leg I; (B) leg II; (C) leg III; (D) leg IV.