Prostigmaeus Kuznetsov, 1984

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, Acarologia 55 (1), pp. 49-60 : 54-55

Genus: Prostigmaeus Kuznetsov, 1984

Type species: Prostigmaeus tauricus Kuznetsov, 1984

Diagnosis — (Based on Ueckermann and Meyer, 1987 and Fan and Zhang, 2005).

Female — Idiosoma elongate and somewhat spindle-shaped; prodorsum with a large shield medially, bearing 3 pairs of setae namely vi, ve and sci; setae sce lateral to sci on integument; pob and eyes absent; humeral shields ventro-laterally, with setae c 2; opisthosoma with a relatively long median shield carrying setae c 1 and d 1; setae e 1 placed on 2 small shields posterior to median shield; intercalary shields (F) divided along midline, with a pair of setae (f 1); suranal shield (H) entire or divided, bearing 3 pairs of setae (h 1-3). Chelicerae separate. Palptibial claw subequal to or slightly shorter than palptarsus; accessory claw seta-like or spinelike; terminal eupathidia on palptarsus separate, counts of setae and solenidia from palptrochanter to palptarsus: 0, 3, 2, 2 + 1 claw + 1 accessary claw, 4 + 1 ω + 2 subterminal spine-like eupathidia + 2 unfused eupathidia; endopodal shields I-II and III-IV present; anogenital area with 4 pairs of aggenital setae (ag 1-4), 3 pairs of genital setae (g 1-3) and 3 pairs of pseudanal setae (ps 1-3).

Male — Solenidia on tarsi I-IV: 2, 2, 2, 2.

Prostigmaeus khanjanii Bagheri and Ghorbani, 2010 ( Fig. 3 )

Diagnosis — Prodorsum with large, reticulated shield medially with 3 setae (vi, ve, sci); opisthosomal shield reticulated, with 2 pairs of setae (c 1, d 1), suranal shield entire, bearing 3 pairs of setae (h 1-3). Endopodal shields I-II and III-IV present; aggenital shield with 4 pairs of setae (ag 1-4); genital plate with 3 pairs of setae (g 1-3). Palp genu with 2 setae; terminal eupathidia on palptarsus separate.

Leg segments’ setal formulae as follows: coxae 2-2-2-2; trochanters 1-1-2-1; femora 6-4-3-2, genua 5(+ κ)-5(+ κ)-2-2; tibiae 5(+ ’, + ’ρ)-5(+ ’ρ)-5(+ ’ρ)- 5(+ ’ρ); tarsi 13(+ ω)-9(+ ω)-7(+ ω)-7(+ ω).

Male. As in female but: shields of hysterosomal area E-F fused; Tarsi I-IV with two solenidia.

Description

Male (n = 3) — Idiosoma elongate. Length of body (excluding gnathosoma) 377 – 417, (including gnathosoma) 433 – 470; width 197.

Material examined — Three males collected from soil under fig trees, Ficus carica L. ( Moraceae ), Iran: Hamedan Province, Heydareh village (34°48’27" N, 48°28’0.85" E, 1873 m a.s.l.), 6 November 2013, coll. F. Amini. Deposited as slidemounted specimens in the Collection of the Acarology Laboratory, University of Bu-Ali Sina , Hamadan, Iran.

Dorsum ( Figure 3A ) — Prodorsum with rather large reticulations, large shield bearing 3 pairs of setae (vi, ve, sci); post ocular bodies (pob) and eyes absent; hysterosoma with an elongate, large median shield, with 2 setae (c 1, d 1); zonal and intercalary shields fused, bearing 2 pairs of setae (e 1, f 1); suranal shield entire and with 2 pairs of setae (h 1, h 2). All hysterosomal shields reticulated. Lengths of dorsal setae: vi 19 – 23, ve 19 – 24, sci 24 – 25, sce 21 – 22, c 1 11 – 13, c 2 23 – 27, d 1 8 – 11, d 2 14 – 17, e 1 11 – 16, e 2 10 – 15, f 1 9 – 11, h 1 21 – 26, h 2 21 – 24, h 3 20 – 23. Distances between dorsal setae: vi-vi 23 – 26, ve-ve 43 – 46, sci -sci 54 – 57, sce-sce 120 – 127, c 1 -c 1 35 – 41, c 2 -c 2 212 – 220, d 1 -d 1 28 – 30, d 2 -d 2 320 – 325, e 1 -e 1 92 – 95, e 2 -e 2 118 – 123, f 1 -f 1 57 – 63, h 1 -h 1 42 – 43, h 2 -h 2 59 – 63, h 3 -h 3 27 – 37, vi-ve 41 – 45, ve-sci 46 – 49, scisce 35 – 43, c 1 -c 2 84 – 91, d 1 -d 2 63 – 71, e 1 - e 2 46 – 53, h 1 -h 2 11 – 14, c 1 -d 1 61 – 63, d 1 -e 1 62 – 66, e 1 -f 1 30 – 32, f 1 -h 1 48 – 49. Ratio: vi/vi-vi 0.83 – 0.88, c 1 / c 1 -c 1 0.30 – 0.31, d 1 / d 1 -d 1 0.28 – 0.36, e 1 / e 1 - e 1 0.10 – 0.16, f 1 / f 1 -f 1 0.15 – 0.17, h 1 / h 1 -h 1 0.05 – 0.06, h 2 / h 2 -h 2 0.35 – 0.45, h 1 /h 2 0.35 – 0.38, c 1 -c 1: d 1 -d 1: e 1 -e 1: f 1 -f 1: 0.61 – 0.65: 0.47 – 0.49: 1.50 – 1.61: 1.0.

Venter ( Figures 3 B-C) — Ventral cuticle with striae; endopodal shields II-III and III-IV present and smooth (Figure 17). Lengths of setae 1a 17 – 21, 1b 22 – 25, 1c 24 – 30, 2b 32 – 37, 2c 31 – 32, 3a 26 – 31, 3b 20 – 24, 3c 15 – 18, 4a 21 – 26, 4b 14 – 17 and 4c 17 – 18, ag 1 18 – 24, ag 2 19 – 21, g 1 2 – 3, g 2 3 – 5, ps 1 15 – 17. Aggenital plate with striae and two setae (ag 1-2). Genital plate indicated in figure 18.

Gnathosoma ( Figure 3D ) — Ventral infracapitulum with two pairs of subcapitular setae, m 15 – 18 and n 16 – 17, two pairs of adoral setae, or1 7 – 10, or2 5 – 6 ( Figure 3B ). Chelicerae free 58 – 63, movable digit 29 – 34 ( Figure 3A ). Palp five segmented, palp tarsus with 4 simple setae + one solenidion (ω) + 2 subterminal spine-like eupathidia + 2 separate eupathidia, 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 3D ).

Legs ( Figures 3 E-H) — Length of leg I 163 – 167; leg II 123 – 125; leg III 124 – 128, leg IV 150 – 155. 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 6-4-3-2, genua 5(+ κ)-5(+ κ)-2-2; tibiae 5(+ ’, + ’ρ)- 5(+ ’ρ)-5(+ ’ρ)-5(+ ’ρ); tarsi 13(+ ω 1, + ω 2)-9(+ ω 1, + ω 2)-7(+ ω 1, + ω 2)-7(+ ω 1, + ω 2). Length of solenidia: I ω 1 29 – 35, I ω 2 17 – 19, II ω 1 28 – 29, II ω 2 13 – 14, III ω 1 25 – 29, III ω 2 4 – 6, IV ω 1 23 – 26, IV ω 2 6 – 7; I ’ρ 19 – 24, I ’ 6 – 9, II ’ρ 15 – 18, III ’ρ 11 – 15, IV ’ρ 14 – 16; I κ 3 – 5; II κ 4 – 7.

Remarks — Males of this species exhibit all fea- tures of the female descriptions, except that the male tarsi I-IV are with two solenidia instead of one solenidion in female, zonal and intercalary shields fused, bearing 2 pairs of setae (e 1, f 1) whereas completely separate in the female.

Figures

FIGURE 3: Prostigmaeus khanajnii Bagheri and Ghorbani (male): A – Dorsal view; B – Ventral view; C – Genital plate; D – Palp; E – Leg I; F – Leg II; G – Leg III; H – Leg IV.