Stigmaeus kurdistaniensis Khanjani & Amini & Khanjani 2015, n. sp.
Creators: name: Khanjani, M.
name: Amini, F.
name: Khanjani, M.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Stigmaeidae
Stigmaeus
Stigmaeus kurdistaniensis

description: Stigmaeus kurdistaniensis n. sp.   
(Figs. 1-2)  
 Diagnosis — Prodorsum with large, reticulated shield; eyes absent and post-ocular bodies present; median hysterosomal shield with 2 pairs of setae; suranal shield entire, with 2 pairs of setae ( h 3  absent). All dorsal shields reticulated. Endopodal shields and coxal areas reticulated; dorsal setae long and serrate. Aggenital plate reticulated and with 3 pairs of setae ( ag 1 -ag 3 ) and genital shield with 1 pair of setae (g). Palp tarsus with one tridentae eupathidium and palp genu with 2 setae. Femora I-II with 6, 5 setae respectively; genua I-IV 3(+ κ)-3(+ κ)- 1-1. Palp and leg’s segments with reticulations.   
 Type materials — Holotype female and 3 paratype females collected from soil under apple trees, Malus domestica Borkh. (Rosaceae), Iran: Kurdistan Province, Ghorveh city (35°10’ N, 47°48’ E, 1906 m a.s.l.) 4 September 2013, coll. F. Amini. The holotype female and 2 paratype females are deposited as slide-mounted specimens in the Collection of the Acarology Laboratory, University of Bu-Ali Sina, Hamadan, Iran and one paratype female will be deposited in the National Collection of Arachnida, Plant Protection Research, Pretoria, South Africa.   
 Description   
 Female (n = 4) — Colour in life red. Idiosoma oval. Measurements of holotype with measurements of paratypes in parentheses: Length of body (excluding gnathosoma) 600 (559 – 618), (including gnathosoma) 761 (700 – 753); width 420 (313 – 415).   
 Dorsum (Figure 1A) — All dorsal shields reticulated; prodorsum with large shield medially; bearing three pairs of setae (vi, ve, sci), post ocular bodies (pob) present and eyes absent, setae sce located on small plates laterally; hysterosomal area C-E with a large shield medially and 4 pairs of small plates, median hysterosomal shield with two setae ( c 1 ,  d 1 ), setae  d 2  located on large, lateral, hysterosomal shields; ventro-lateral, humeral plate with setae  c 2 ; intercalary shields (F) with setae  f 1 ; suranal shield (H) entire, bearing 2 pairs of setae ( h 1-2 ). All dorsal setae long and with a cluster of barbs distally except setae  c 2  sparsely serrate; setae  c 2  longer than the others. Lengths of dorsal setae: vi 95 (93 – 97), ve 125 (114 – 123), sci 73 (67 – 75), sce 93 (93 – 98),  c 1  86 (82 – 90),  c 2  136 (130 – 137),  d 1  88 (82 – 90),  d 2  91 (86 – 94),  e 1  90 (82 – 92),  e 2  98 (87 – 99),  f 1  96 (87 – 99),  h 1  90 (90 – 92),  h 2  85 (84 – 86). Distances between dorsal s etae: vi-vi 35 (39 – 40), ve-ve 100 (89 – 103), sci-sci 175 (154 – 180), sce-sce 235 (232 – 251),  c 1 -c 1  89 (77 – 94),  c 2 -c 2  420 (312 – 417),  d 1 -d 1  92 (73 – 95),  d 2 -d 2  291 (257 – 293),  e 1 -e 1  83 (73 – 82),  e 2 -e 2  292 (243 – 289),  f 1 -f 1  165 (145 – 167),  h 1 -h 1  68 (56 – 65),  h 2 -h 2  141 (134 – 142), vi-ve 125 (62 – 125), ve-sci 58 (57 – 67), sci-sce 50 (37 – 47),  c 1 -c 2  95 (99 – 157),  d 1 -d 2  108 (92 – 106),  e 1 -e 2  101 (82 – 94),  h 1 -h 2  45 (37 – 45),  c 1 -d 1  100 (93 – 105),  d 1 -e 1  100 (81 – 102),  e 1 -f 1  79 (75 – 83),  f 1 -h 1  91 (72 – 89); ratio: vi/vi-vi 2.71 (2.38),  c 1 /c 1 -c 1  0.97 (0.95 – 1.06),  d 1 /d 1 -d 1  0.96 (0.99 – 1.17),  e 1 /e 1 - e 1  1.08 (1.12 – 1.13),  f 1 /f 1 -f 1  0.58 (0.59 – 0.6),  h 1 /h 1 -h 1  1.32 (1.61 – 1.42),  c 1 -c 1: d 1 -d 1: e 1 -e 1: f 1 -f 1 : 0.53 (0.53 – 0.56): 0.55 (0.50 – 0.56): 0.50 (0.49 – 0.50): 1.0 (1.0).   
 Venter (Figure 1B) — Ventral cuticle striated coxisternal regions I-II and III-IV with reticulations (Figure 1B). Lengths of setae 1a 36 (35 – 40), 1b 38 (31 – 40), 1c 70 (65 – 72), 2b 63 (59 – 67), 2c 42 (39 – 43), 3a 38 (38 – 42), 3b 43 (38 – 45), 3c 45 (31 – 40), 4a 41 (36 – 43), 4b 37 (37 – 41), 4c 37 (33 – 38),  ag 1  34 (33 – 37),  ag 2  39 (37 – 40),  ag 3  49 (47 – 50), g 27 (25 – 30),  ps 1  65 (66 – 73),  ps 2  37 (37 – 45),  ps 3  40 (39 – 44). Aggenital area reticulated, with 3 setae ( ag 1-3 ), setae  ag 3  longer than  ag 1-2 ; genital shield with 1 pair of setae (g); anal plate with 3 pairs of setae ( ps 1-3 ), pseudanal setae  ps 1  distally serrated and almost two times longer than setae  ps 2-3 .   
 Gnathosoma (Figure 1C) — Ventral infracapitulum with two pairs of infracapitular setae, m 43 (40 – 43) and n 34 (29 – 36), two pairs of adoral setae, or1 29 (30 – 32), or2 38 (37 – 39) (Figure 1C). Chelicerae free 95 (95 – 100), movable digit 127 (126 – 132) (Figure 1A). Palp five segmented, palp tarsus with 4 simple setae + one simple eupathidium + one solenidion (ω) + one tridentae eupathidium, palp tibia with two setae + one well developed claw + one accessory claw seta-like, palp genu with one seta and palp femur with three setae (Figure 1C).   
 Legs (Figures 1 D-G) — Length of leg I 253 (243 – 273); leg II 221 (208 – 238); leg III 230 (223 – 243), leg IV 251 (253 – 270). Setal formulae of leg segments (solenidia in parentheses and not included in setal counts) as follows: coxae 2-2-2-2; trochanters 1-1-2-1; femora 6-5-3-2, genua 3(+ κ)- 3(+ κ)- 1-1; tibiae 5(+ ’, + ’ρ)- 5(+ ’ρ)- 5(+ ’ρ)- 5(+ ’ρ); tarsi 13(+ ω)- 9(+ ω)-7(+ ω)-7(+ ω). Length of solenidia: I ω 25 (20 – 30), II ω 25 (26 – 28), III ω 15 (14 – 20), IV ω 15 (14 – 18); I ’ρ 39 (37 – 39), I ’ 16 (12 – 18), II ’ρ 32 (32 – 35), III ’ρ 24 (24 – 29), IV ’ρ 28 (27 – 29); I κ 72 (72 – 77), II κ 12 (10 – 11).   
 Male (n = 1) — Idiosoma oval. Length of body (excluding gnathosoma) 587, (including gnathosoma) 655; width 275.   
 Dorsum (Figure 2A) — Dorsal shields completely reticulated; prodorsal shield bearing four pairs of setae (vi, ve, sci, sce); post ocular bodies (pob) present; eyes absent; hysterosomal area C-F almost covered by large median and 3 pairs of plates laterally (Figure 2A); median and lateral hysterosomal shields fused, with setae  c 1 ,  d 1 ,  d 2 ,  e 1 , intercalary shield divided with setae  f 1 ; suranal shield entire, with two pairs of setae ( h 1 ,  h 2 ). All dorsal setae barbed. Lengths of dorsal setae: vi 92, ve 107, sci 70, sce 100,  c 1  50,  c 2  95,  d 1  45,  d 2  55,  e 1  30,  e 2  107,  f 1  80,  h 1  52,  h 2  70. Distances between dorsal setae: vi-vi 37, ve-ve 85, sci -sci 67, sce-sce 232,  c 1 -c 1  57,  c 2 -c 2  275,  d 1 - d 1  57,  d 2 -d 2  182,  e 1 - e 1  42,  e 2 -e 2  150,  f 1 -f 1  92,  h 1 -h 1  37,  h 2 -h 2  80, vi-ve 55, ve-sci 62, sci-sce 45,  c 1 -c 2  50,  d 1 -d 2  65,  e 1 - e 2  60,  h 1 -h 2  25,  c 1 -d 1  67,  d 1 - e 1  60,  e 1 -f 1  42,  f 1 -h 1  52. Ratio: vi/vi-vi 2.48,  c 1  /  c 1 -c 1  0.87,  d 1  /  d 1 -d 1  0.78,  e 1  /  e 1 - e 1  0.71,  f 1  /  f 1 -f 1  0.86,  h 1  /  h 1 -h 1  1.4,  h 2  /  h 2 -h 2  0.87,  h 1 /h 2  0.74,  c 1 -c 1: d 1 -d 1: e 1 -e 1: f 1 -f 1 : 0.62: 0.62: 0.45: 1.0.   
 Venter (Figure 2B) — Endopodal shields I-II and III-IV with reticulations. Lengths of setae 1a 22, 1b 35, 1c 35, 2b 35, 2c 27, 3a 2, 3b 22, 3c 17, 4a 27, 4b 25 and 4c 20,  ag 1  26,  ag 2  30,  ag 3  38,  ps 1  27,  g 1  2,  g 2  2. Aggenital plate smooth with three setae ( ag 1-3 ).   
 Gnathosoma (Figures 2 C-D) — Ventral infracapitulum reticulated and with two pairs of infracapitular setae, m 30 and n 22, two pairs of adoral setae, or1 22, or2 32 (Figure 2B). Chelicerae free 132, movable digit 65 (Figure 2D). Palp five segmented, palp tarsus with 4 simple setae + one simple eupathidium + one solenidion (ω) + one tridentate eupathidium, palp tibia with two setae + one well developed claw + one spine-like accessory claw, palp genu with two seta and palp femur with three setae (Figure 2C).   
 Legs (Figures 2 E-H) — Length of leg I 224, leg II 195; leg III 185, leg IV 205. Setation same as female except tarsi I-IV with two solenidia and solenidia longer. Length of solenidia: I  ω 1  43, I  ω 2  25, II  ω 1  38, II  ω 2  22, III  ω 1  32, III  ω 2  12, IV  ω 1  26, IV  ω 2  12; I ’ρ 35, I ’ 15, II ’ρ 31, III ’ρ 20, IV ’ρ 23; I κ 55; II κ 8.   
 Remarks — The new species Stigmaeus kurdistaniensis n. sp. resembles S. siculus (Berlese, 1883) in that dorsal shields are reticulated, median hysterosomal shield with two setae, pob present, eyes and h3 absent. However it differs from the latter in: all dorsal and ventral setae longer than that of S. siculus; ventral infracapitulum and all leg and palp segments with reticulations in E. kurdistaniensis instead of smooth in S. siculus and pob small, between setae ve -sci in the new species instead of large in S. siculus.   
 The new species also resembles S. echinopus Summers, 1962, in having all leg and palp segments with reticulations, suranal shield entire and reticulated, pob present and median hysterosomal shield with two setae. However, S. kurdistaniensis differs from the latter in: aggenital shield reticulated instead of smooth in S. echinopus, all dorsal and ventral setae longer than those of S. echinopus and genual setae κ short in S. kurdistaniensis in contrast to long in S. echinopus.   
Immature stages — Unknown.  
Etymology — The species is named after the locality where it was collected, namely Kurdistan province.
description: Published as part of Khanjani, M., Amini, F. & Khanjani, M., 2015, A new species of the genus Stigmaeus koch (Acari: Stigmaeidae) from Kurdistan province, Iran and description of male of Prostigmaeus khanjanii Bagheri and Ghorbani, pp. 49-60 in Acarologia 55 (1) on pages 50-54, DOI: 10.1051/acarologia/20152153, http://zenodo.org/record/5403892