Eryngiopus langroudiensis, Khanjani & Hajizadeh & Ueckermann, 2014

Khanjani, M., Hajizadeh, J. & Ueckermann, E. A., 2014, Eryngiopus Langroudiensis N. Sp. (Acari: Stigmaeidae) From Guilan, Iran, Acarologia 54 (2), pp. 171-176 : 172-175

Eryngiopus langroudiensis

( Figures 1-2 )

Diagnosis — Ventral setae 1a, 3a and 4a very long. Femora 3-3-2-2, genua 3-0-0-0, tarsi 12(ω)-10(ω)- 8(ω)-8(ω).

Description — Female (n = 7). Color in life red. Idiosoma oval. Measurements of holotype with measurements of paratypes in parentheses: Length of body (excluding gnathosoma) 320 (320 – 336), (including gnathosoma) 424 (415 – 440); width 176 (184 – 208); length of leg I 140 (140 – 160); leg II 110 (110 – 120); leg III 108 (109 – 120) leg IV 120 (110 – 130).

Dorsum — ( Figure 1a ). Prodorsal shield reticulate longitudinally; bearing three pairs of setae (vi, ve, sci), setae sce and eyes present. Dorsal hysterosomal area between setae C-E with fine, longitudinal striae, area between setae f 1 with transverse striae, f 1 on small platelets. Suranal shield (H) entire, with 2 pairs of setae (h 1 and h 2). Dorsal hysterosoma with 8 pairs of setae, with slightly ciliated. Lengths of dorsal setae: vi 16 (16 – 17), ve 26 (21 – 24), sci 24 (18 – 22), sce 28 (24 – 26), c 1 20 (18 – 20), c 2 24 (23 – 30), d 1 20 (19 – 20), d 2 22 (21 – 22), e 1 14 (14 – 16), e 2 14 (14 – 18), f 1 16 (14 – 16), h 1 20 (20 – 21), h 2 20 (20 – 22). Distances between dorsal setae: vi-vi 12 (12 – 16), ve-ve 32 (32 – 34), vi-ve 14 (14 – 16), sci -sci 54 (56 – 58), sce-sce 108 (108-130), ve-sci 20 (22-24), sci-sce 30 (30-38), sci-c1 68 (65-70), c 1 -c 1 46 (58 – 63), c 2 -c 2 154 (160 – 180), c 1 -d 1 74 (68 – 80), d 1 -d 1 98 (90 – 104), d 1 -d 2 44 (44 – 50), d 1 - e 2 40 (43 – 60), d 2 -e 2 72 (70 – 80), d 2 -d2 160 (160 – 180), e 1 - e 1 44 (42 – 46), d 1 - e 1 60 (56 – 60), f 1 -f 1 52 (48 – 50), f 1 -h 1 38 (34 – 40), h 1 -h 1 18 (16 – 20), h 2 -h 2 50 (56 – 59), h 1 -h2 18 (18 – 20); ratio: vi/vi-vi 1.3 (1.0-1.3), c 1 / c 1 -c 1 0.46 (0.31-0.32), d 1 / d 1 -d 1 0.22 (0.19 – 0.21), e 1 / e 1 - e 1 0.33 (0.33 – 0.35), f 1 / f 1 -f 1 0.35 (0.29 – 0.31), h 1 / h 1 -h 1 1.11 (1.05 – 1.25), h 2 / h 2 -h 2 0.40 (0.36 – 0.37), h 1 /h 2 1.0 (0.94 – 1.0), c 1 -c 1: d 1 -d 1: e 1 -e 1: f 1 -f 1: 0.89 (1.21 – 1.26): 1.88 (1.88 – 2.08): 0.85 (0.88 – 0.92): 1.

Venter — ( Figure 1b ). Ventral cuticle striate transversely between coxisternal regions II-III; coxisternal regions I-II and III-IV are surrounded by longitudinal striae ( Figure 2 ). Lengths of setae 1a 60 (57 – 60), 1b 14 (14 – 15), 1c 14 (13 – 14), 2c 20 (20 – 21), 3a 44 (50 – 51), 3b 16 (15 – 20), 3c 14 (13 – 14), 4a 40 (40 – 46) and 4c 12 (12 – 13), ag 1 14 (14 – 16), ag 2 16 (14 – 17), ag 3 22 (24 – 28), g1 25 (26 – 27), ps1 14 (13 – 14), ps2 12 (14 – 15), ps 3 12 (12 – 14). Aggenital setae ag 3 longer than ag 1-2 and pseudanal seta ps1 almost as long as setae ps 2-3. Distances: ag 1 -ag 1 16 (16 – 20), ag 2 -ag 2 28 (26 – 30), ag 3 -ag 3 46 (44 – 54), g1-g1 10 (9 – 10).

Gnathosoma — ( Figures 1 c-e). Ventral infracapitulum with two pairs of subcapitular setae, m 32 (31-50) and n 30 (45-50), two pairs of adoral setae, or 1 11 (8 – 110, or 2 12 (10 – 12); distances: or 1 -or 1 4 (4 – 5), or 2 -or 2 10 (8 – 11), m-m 28 (25 – 29), n-n 20 (21 – 22) (Fig. 5). Chelicerae free 65 (55 – 60), movable digit 30 (30 – 32) (Figure 3). Palp five segmented, palp tarsus with 3 simple setae + one simple eupathidium + one solenidion(ω), palp tibia with two setae + one well developed claw, palp genu with one seta and palp femur with three setae (Figure 4).

Legs — ( Figure 2 ). Legs about half length of body. Leg segments’ setal formulae: coxae 2-1-2-1; trochanters 1-1-1-1; femora 3-3-2-2, genua 3-0-0-0; tibiae 5+1’ρ–5+1’ρ–5+1’ρ–5+1’ρ; tarsi 11+1ω– 9+1ω–7+1ω–7+1ω. Specialized setae ’ρ on tibia I one and half times longer than on tibia II and two times of tibiae III-IV. Solenidion ω on tarsus I longer than on tarsi II-IV.

Etymology — The species is named after the locality where most of specimens were collected, Langroud city, in Guilan province, Iran.

Type materials — Holotype and one paratype females from the soil under of citrus trees, Chaboksar (36°58’0”N, 50°35’0”E, 216 m), 5 October 2012; 2 paratype females from citrus leaves infested by citrus red mite, Panonychus citri (McGregor) and scale insects, Langroud (37°11’0”N, 50°9’0”E, 25 m), 5 October 2012; 2 paratype females from citrus leaves infested by privet mite, Brevipalpus obovatus and scale insects, Vajargah (37°02’27”N, 50°24’31”E, – 10 m), 4 November 2012; 1 paratype female from the soil under citrus trees, Langroud (37°11’0”N, 50°9’0”E, 25 m), 4 Novembers 2012, collected by J. Hajizadeh. The holotype female and one paratype are deposited as slide-mounted specimens in the Collection of the Acarology Laboratory, University of Bu-Ali Sina , Hamadan, Iran and five paratype females are deposited in the mites Collection of the Acarology Laboratory , University of Guilan, Rasht, Iran.

Remarks — The new species Eryngiopus langroudiensis sp. nov. resembles E. citri Rakha and Mc- Coy 1984 by its long ventral setae and the same setal formulae on the palp segments, but differs from E. citri in: 1) prodorsum longitudinally striated instead of reticulated, 2) coxae II with 1 seta instead of two, 3) femora 3-3-2- 2 in E. langroudiensis as opposed to 4-4-2- 2 in E. citri , 4) genua I-IV 3-0-0-0 versus genua 2-0-0-0, 5) tarsi 12(ω)-10(ω)-8(ω)-8(ω) whereas 9(ω)-8(ω)-7(ω)-6(ω) in E. citri . Also the new species closely resembles E. bifidus Wood, 1967 in that the chaetotaxy of coxae, tibiae and tarsi I- IV differs from the latter by: 1) femora 3-3-2- 2 in E. langroudiensis as opposed to 4-4-2- 2 in E. bifidus , 2) trochanter IV with 2 seta as opposed to with 0, 3) ventral setae 1a, 3a and 4a longer than the latter, 4) adoral setae or1-2 longer those of E. bifidus .

Male and immature stages: Unknown.

Figures

FIGURE 1: Eryngiopus langroudiensis n. sp. (female): a – Dorsal view of idiosoma; b – Ventral view of idiosoma; c – Chelicerae; d – Palp; e – Subcapitulum.

FIGURE 2: Eryngiopus langroudiensis n. sp. (female): a – Leg I; b – Leg II; c – Leg III; d – Leg IV.