Tycherobius iranensis Khanjani, Yazyanpanah, Ostovan & Fayaz, 2012, sp. nov.

Tycherobius iranensis sp. nov.

(Figs. 1–16)

Diagnosis. Dorsal idiosoma without pdx seta; palp tarsus with two simple setae; peritreme with one loop; dorsal seta c1 190 (183–208) [193]; the ratio of dorsal setae c1: d1: e1: f1 as follows: 1.9(2.6–3.05)[2.68]:1.7(2.04–2.42)[2.25]:0.93(1.19–1.42) [1.26]:1.0 (1.0) [1.0]; tarsus I–II with 9(ω)–8(ω); femora I–IV with 4–3–3–2.

Female (n=4). Length of body (excluding gnathosoma) 320 (260–330) [281], width 220 (170–250) [203].

Gnathosoma (Figs. 6, 7). Gnathosoma 90 (90–96) [92] long (from base of subcapitulum to tip of palp) and 70 (65–67) [66] wide. Peritreme with one loop (Fig. 6). Subcapitulum with setae m 28 (25–30) [27] and two pairs of adoral setae (or1–2), or1 7 (7) [7], or2 8 (7–10) [8]; m-m 29 (25–30) [28] (Fig. 7). Palpi five segmented with following setal distribution (Fig. 7): tarsus with one eupathidium, two simple setae, one small solenidion; tibia with three smooth setae and one long claw 17 (18–21) [20]; genu with one long and slender seta 40 (34–42) [39]; femur with two serrated setae 18 (15–20) [18], 33 (33–38) [37]; chelicerae fused 27 (27–30) [29] long. Palp coxa with one supra-coxal seta 3 (3) [3] long (Fig. 7).

Dorsum (Figs. 1–3). Dorsal idiosoma region with 14 pairs of long and thick serrated setae set on tubercles (Figs. 1–3). Length of dorsal setae as follows: vi 88 (83–90) [86], ve 51 (45–59) [54], sci 41 (58–62) [61], sce 37 (35–41) [38], c1 190 (183–208) [193], c2 71 (50–80) [64], d1 170 (145–170) [162], d2 53 (51–60) [54], e1 93 (85–99) [91], e2 50 (48–59) [52], f1 100 (60–83) [72], f2 45 (41–50) [46], h1 50 (44–48) [47], h2 40 (38–42) [40]. Distances between setae: vi-vi 38 (30–40) [35], ve–ve 108 (95–110) [102], vi–ve 41 (20–40) [33], ve-sci 19 (15–20) [18], scisci 135 (120–160) [140], sce–sce 185 (155–200) [182], sci–sce 58 (46–61) [53], c1-c1 15 (20–28) [24], c1-c2 95 (75–110) [95], c2–c2 215 (160–215) [194], c1–d1 70 (40–70) [57], c2-d2 50 (45–56) [52], d1–d1 25 (18–20) [19], d1–d2 85 (60–100) [86], d2–d2 195 (150–192) [174], d1– e 1 38 (42–52) [48], d2– e 2 60 (50–58) [54], e1- e 1 20 (25–30) [28], e1– e 2 80 (50–90) [73], e2–e2 145 (110–160) [137], e1–f1 62 (40–65) [55], e2–f2 45 (18–53) [27], f1–f1 20 (20–21) [20], f1–f2 50 (30–60) [47], f2–f2 120 (85–115) [104], f1–h1 50 (30–60) [44], f2–h2 30 (20–40) [30], h1-h1 17 (15–26) [21], h1–h2 19 (15–20) [18], h2–h2 60 (52–63) [58]. Seta c1 the longest and seta sce the smallest.

The ratio of dorsal setae vi / c1 0.46 (0.43–0.45)[0.45]; c1 / d1 1.12 (1.22–1.26)[1.2]; d1 / e1 1.83 (1.70–1.71)[1.78]; e1 / f1 0.93 (1.19–1.42)[1.26]; f1 / h1 2.0 (1.36–1.73)[1.53]; vi / ve 1.72 (1.52–1.84)[1.59]; sci / sce 1.1 (1.51–1.66)[1.60]; c1 / c2 2.67 (2.6–3.66)[3.01]; d1 / d2 3.2(2.83–2.84)[3.0]; e1 / e2 1.86 (1.68–1.77)[1.75]; f1 / f2 2.22 (1.46–1.66)[1.57]; h1 / h2 1.25 (1.14–1.16)[1.18]; c1: d1: e1: f1 as follows: 1.9(2.6–3.05)[2.68]: 1.7(2.04–2.42)[2.25]: 0.93(1.19–1.42)[1.26]: 1.0(1.0)[1.0]. Two pairs of eyes above seta sce, 8 (7–8) [8] and 14 (13–14) [13] diameter (Fig. 1).

Venter (Figs. 4, 5, 8). Ventral surface striated, coxae I–IV with smooth striation, coxal setae stout and serrate, ventral setae 1a, 3a and 4a slender and slightly serrate (1a set on coxa I). Endopodal shields absent. Anogenital area with one pair of aggenital setae (ag), one pair of genital seta (g) and three pairs of small and smooth anal setae (ps1–3). Length of ventral setae as follows: 1a 30 (25–33) [29], 1b 30 (20–33) [28], 1c 55 (44–65) [52], 2b 41 (35–48) [40], 3a 30 (33–35) [34], 3b 50 (45–56) [50], 3c 40 (31–46) [37], 4a 29 (27–31) [29], 4b 18 (16–20) [19], 4c 28 (24–27) [25], ag 19 (17–18) [18], g 15 (11) [11], ps1 15 (14–16) [15], ps2 11 (12–17) [15], ps3 9 (10–15) [12] (Figs. 4, 5, 8).

Legs (Figs. 9–16). Measurements of leg I 675 (615–643) [633], leg II 525 (535–580) [553], leg III 635 (585–643) [616], leg IV 755 (675–740) [712]. Chaetotaxy of leg segments as follows (solenidia in parentheses and not included in setal counts): coxae 3–1–2–2, trochanters 1–1–1–1, femora 4–3–3–2, genua 1(κ)–1(κ)–1–1, tibiae 9(φ)–8(φ)–8(φ)–7(φ), tarsi 9(ω)–8(ω)–7–7 (Figs. 9–16). Genua I–IV with one long, serrated setae, genual setae III–IV longer than I–II (Figs. 9–12). Number of tenent hairs in tarsi I–IV as follows: 7; 8; 4–8; 2–6. Genual setae I–IV length as follows: 63 (58–76) [65]–133 (132–160) [148]–163 (130–173) [183]–190 (170–195) [183]. Solenidia of legs I–IV length as follows: I κ 3 (3) [3], II κ 4 (3) [3], I φ 16 (13–15) [14], II φ 12 (10–12) [11], III φ 9 (10) [10], IV φ 8 (8–12) [10], I ω 8 (9–10) [9], II ω 5 (5–6) [5]. Coxa I with one supra-coxal seta 4 (4) [4] long (Fig. 8).

Male. Unknown.

Remarks. The new species, T. iranensis sp. nov., closely resembles T. hawaiiensis, T. ueckermanni sp. nov. and T. farsiensis sp. nov. in lacking seta pdx and having the same chaetotaxy of genua I–IV and tibia II–IV, however, it differs from T. hawaiiensis in: 1) coxa I with 3 setae and tarsus II 8 (1) in new species, instead of 1 and 9(1) in T. hawaiiensis; 2) peritreme with one loop in the former while complex in the latter; 3) the smallest dorsal seta sce vs. h 2 in T. hawaiiensis; 4) length of dorsal setae c1 183–208, d1 145–170 and h2 38–42 vs. c1 130–155, d1 121–148 and h 2 23–28; 5) the ratio of dorsal setae c1: d1: e1: f1: 1.9–3.05:1.7–2.42:0.93–1.42:1.0 instead of 2.03–2.28:1.95–2.12:0.96–1.04:1.0. It differs from T. ueckermanni in: 1) the smallest dorsal setae is sce in T. iranensis but h 2 in T. ueckermanni; 2) femur III with 3 setae and tarsi I–II with 9(ω)–8(ω) setae in the former whereas femur III with 2 setae and tarsi I–II with 10(ω)–9(ω) setae in the latter; 3) palp tarsus with two simple setae in the former oppose to one simple seta in the latter; 4) ratio of dorsal setae c1: d1: e1: f1: 1.9–3.05:1.7–2.42:0.93–1.42:1.0; sci / sce 1.1–1.66 in T. iranensis instead of c1: d1: e1: f1: 2.17–2.7:2.12:1.1–1.19:1.0; sci / sce 1.92–2.0 in T. ueckermanni; 5) ventral surface of coxae I–IV with striation in the former whereas ventral surface of coxae I–IV with smooth reticulations plus striations in the latter. It also differs from T. farsiensis sp. nov. in: 1) the longest and smallest dorsal setae is c1 and sce respectively in T. iranensis but d1 and c 1 in T. farsiensis; 2) tarsi I–II with 9(ω)–8(ω) setae in the former whereas 10(ω)–9(ω) in T. farsiensis; 3) seta e1 extending to over level of e 2 in new species opposed to not reaching e 2 in the second species; 4) ratio of dorsal setae c1: d1: e1: f1: 1.9–3.05:1.7–2.42:0.93–1.42:1.0; vi / c1 0.43–0.45; c1 / d1 1.12–1.26; sci / sce 1.1–1.66; 2.6–3.66; c1 / c2 2.6–3.66 instead of 0.39–0.45: 2.29–2.53:0.97–1.14:1.0; vi / c1 2.90–3.16; c1 / d1 0.16–0.17; sci / sce 2.14–2.43; c1 / c2 0.40–0.55.

Etymology. This species is named after country of its origin, Iran.

Type materials. Holotype female from soil and rotten leaves under oak tree (Quercus brantii Lindl, Fagaceae), Koohmare Sorkhi region, Fars province, Iran (29° 32 ' 05'' N, 52° 12' 56'' E, 1916 m a.s.l.), 0 1 ix 2010. Three paratypes female from the same host and data collection (P1–3) respectively: P1, Koohmare Sorkhi region, Fars province, Iran (29° 28' 09'' N, 52° 10' 11'' E, 1769 m a.s.l.), 0 7 -03- 2010. P2, Koohmare Sorkhi region, Fars province, Iran (29° 31' 40'' N, 52° 12' 17'' E, 1827 m a.s.l.), 0 1 iii 2010. P3 from soil and rotten leaves under oak tree, Koohmare Sorkhi region, Fars province, Iran (29° 28' 52'' N, 52° 10' 27'' E, 1652 m a.s.l.), 0 3 i 2010, S. Yazdanpanah. The type materials are preserved as slide mounted specimens and the holotype female and two paratypes are deposited in the Acari Collection of the Department of Plant Protection, Faculty of Agriculture, University of Bu-Ali Sina, Hamedan, Iran and one paratype female will be deposited in the Mites collection of Arachnida, Biosystematic Division, ARC-Plant Protection Research Institute, Pretoria, South Africa.