Tenuipalpoides iraniensis Mahdavi and Asadi, 2017

Latifi, Malihe, 2017, A new species of Tenuipalpoides (Acari: Tetranychidae) from Astragalus (Leguminoseae) in Iran, Zootaxa 4329 (2), pp. 150-158 : 151-155

Tenuipalpoides iraniensis Mahdavi and Asadi sp. nov.

( Figs. 1–17)

Type material. Holotype one female, four females and five deutonymph paratypes ex. Astragalus spp. (Leguminoseae) IRAN: Genow-Hormozgan Province, 27°26′44″N 56°18′18″E, January 2011, coll. S. Farzan.

Type deposition. Holotype (one female) deposited at SBUK, paratypes deposited at SBUK (three females and five deutonymphs) and one female paratype deposited at ACASI.

Diagnosis. Female. Peritreme hooked; setation of legs I–IV: coxae 2–2–1–1; trochanters 1–1–1–1; femora 3– 3–2–1; genua 5–4–2–2; tibiae 7(1)–5–4–3; tarsi 9(1) + 2dupl.–8 + 1dupl.–7–7; tarsus I with two tactile setae and one solenidion proximal to duplex setae; dorsal idiosomal setae serrate, broadly leaf-like, longer than distances between them, setae sc1 and c1 the longest and shortest, respectively.

Description. FEMALE (Holotype). ( Figs. 1–9): Length of body excluding gnathosoma (v2 –h1) 246–251; width (c3–c3) 140–145; Dorsum ( Fig. 1): Dorsum with 13 pairs of setae, prodorsum three pairs, opisthosoma 10 pairs; prodorsum mostly with delicate longitudinal striations, reticulate medially; opisthosoma delicately transversally striate with a little rugosity in some areas; setae e1–2, f1–2 and h1 located on smooth area; all dorsal setae set on prominent tubercles and serrate, broadly, leaf-like. Lengths of setae: prodorsal setae: v2 69 –71, sc1 91–93, sc2 68–72; opisthosomal setae: c1 65–67, c2 70–72, c3 71–74, d1 71–73, d2 76–79, e1 81–83, e2 75–78, f1 81–86, f2 78–84, h1 65–69. Setae f 1 in marginal position and setae sc1 and c1 the longest and shortest, respectively. Venter ( Fig. 2 ) Striation pattern transverse between 1b–1b and 3a–3a, longitudinal and undulate between ag–h2. Lengths of intercoxal setae: 1a 50, 3a 34, 4a 30; one pair of aggenital setae (ag), two pairs each of genital setae (g1–2) and pseudanal setae (ps1– 2); opisthosomal setae h2–3 flank genitoanal region. Gnathosoma: Palp tarsus ( Fig. 9 ), setation of palp: femur (dPFe), genu (l"PGe), tibia (l'PTi, dPTi, l"PTi), tarsus (3 tactile setae (a, b, c), 3 eupathidial (ul'ζ, suζ, ul"ζ), 1 solenidion (ω )). All palp setae smooth. Peritreme hook distally ( Fig. 7 ). Legs ( Figs. 3–6 ): Setation of legs I–IV: coxae 2(1b, 1c)–2(2b, 2c)–1(3b)–1(4b); trochanters 1(v')–1(v')–1(v')–1(v'); femora 3(d, bv", l')–3(d, bv", l')–2(ev', d)–1(ev'); genua 5(d, v', v", l', l")–4(d, l', l",v')–2(d, v')–2(d, v'); tibiae 7(d, v', v", l', l", l'1, φ)–5(d, v', v", l', l")–4(d, l', v', v")–3(d, v', v"); tarsi 9(pv', l'1, ω"1, u', u", p'ζ, p"ζ, tc', tc"+ 2dupl.(ft', ω', ft", ω" ))–8(pv', l'1, u', u", p'ζ, p"ζ, tc', tc"+ 1dupl.(ft', ω' ))–7(v"1, pv', pv", u', u", tc', tc")–7(v"1, pv', pv", u', u", tc', tc"); tarsus I with two tactile setae and one solenidion proximal to duplex setae. Duplex setae on tarsus II with short and baculiform solenidion; all pretarsi with paired padlike claws and empodium a simple claw ( Fig. 8 ).

Deutonymph. ( Figs. 10–17 ): Length of body excluding gnathosoma (v2 –h1) 159–163; width (c3–c3) 96–100; Dorsum ( Fig. 10 ): Dorsal striation pattern similar to female; all dorsal setae set on prominent tubercles and similar to female but narrower. Lengths of setae: prodorsal setae: v2 50 –54, sc1 61–66, sc2 45–52; opisthosomal setae: c1 42– 44, c2 49–52, c3 51–56, d1 44–46, d2 47–52, e1 54 –55, e2 56 –61, f1 59–62, f2 56–63, h1 54–62. Venter ( Fig. 11 ) striation pattern similar to female; Lengths of intercoxal setae: 1a 22–26, 3a 21–22, 4a 18–19; one pair of aggenital setae (ag) and genital setae (g1); two pairs of pseudanal setae (ps1–2); genitoanal region flanked by opisthosomal setae h2– 3. Gnathosoma: Palp setae ( Fig. 16 ) as in female. Terminal end of peritreme hook-like ( Fig. 17 ). Legs ( Figs. 12– 15 ): Setation of legs I–IV as follows: coxae 2(1b, 1c)–2(2b, 2c)–1(3b)–1(4b); trochanters 1(v')–1(v')–1(v')–0; femora 3(d, bv", l')–3(d, bv", l')–2(ev', d)–1(ev'); genua 5(d, v', v", l', l")–4(d, l', l",v')–1(v')–1(v'); tibiae 7(d, v', v", l', l", l'1, φ)–5(d, v', v", l', l")–4(d, l', v', v")–3(d, v', v"); tarsi 9(pv', l'1, ω"1, u', u", p'ζ, p"ζ, tc', tc"+ 2dupl.(ft', ω', ft", ω" ))–8(pv', l'1, u', u", p'ζ, p"ζ, tc', tc"+ 1dupl.(ft', ω' ))–7(v"1, pv', pv", u', u", tc', tc")–7(v"1, pv', pv", u', u", tc', tc"); tarsus I with two tactile setae and one solenidion proximal to duplex setae; duplex setae on tarsus II with short and baculiform solenidion; pretarsi similar to female.

MALE: unknown

Etymology. This species is named after its country ( Iran) of collection.

Differential diagnosis. T. iraniensis is easily distinguished from other species by its different leg chaetotaxy, hooked end of peritreme, dorsal pattern and the shape of the dorsal setae. The new species differs from T. zizyphus and T. dorychaeta by having two tactile setae and one solenidion proximal to the duplex setae (without any setae for T. zizyphus and one tactile seta, one solenidion for T. dorychaeta ) and the shape of the end of the peritreme (simple hook for T. iraniensis versus hooked peritreme with irregular pectinate branches for T. zizyphus and T. dorychaeta ) and dorsal pattern (prodorsum mostly with delicate longitudinal striations, reticulate medially; opisthosoma delicately transversally striated with a little rugosity in some areas in T. iraniensis versus reticulated in T. dorychaeta ). The new species differs from T. sebakwensis by end of the peritreme (hooked with few branches in T. sebakwensis ), dorsal pattern (reticulated prodorsum, finely striated integument, widely spaced and irregular transverse striated opisthosoma in T. sebakwensis ), shape of the dorsal setae (leaf-like for T. iraniensis versus broadly serrate for T. sebakwensis ), leg chaetotaxy of female femora (4–4–2–1 for T. sebakwensis and 3–3–2–1 for T. iraniensis ) and tarsus II 9 (0 or 1) + 1 dupl. for T. sebakwensis and 8 + 1 dupl. for T. iraniensis ). The new species differs from T. hastata by the tibia and tarsus setal count: on tibia I, T. hastata lacks a solenidion (present in T. iraniensis ), and also proximal duplex setae on tarsus I (with short solenidion in T. hastata and long solenidion in T. iraniensis ) and dorsal setae (broadly lanceolate leaf-like (all uniform) in T. iraniensis versus broadly lanceolate (not uniform in length and shape) for T. hastata ).

Figures

FIGURE 2. Tenuipalpoides iraniensis sp. nov. (Female). (2) Venter

FIGURE 3 – 9. Tenuipalpoides iraniensis sp. nov. (Female). (3) Trochanter to tarsus I; (4) Trochanter to tarsus II; (5) Trochanter to tarsus III; (6) Trochanter to tarsus IV; (7) Peritreme; (8) Empodium IV; (9) Palptarsus;

FIGURE 10 – 11. Tenuipalpoides iraniensis sp. nov. (Deutonymph). (10) Dorsum; (11) Venter.

FIGURE 12 – 17. Tenuipalpoides iraniensis sp. nov. (Deutonymph). (12) Trochanter to tarsus I; (13) Trochanter to tarsus II; (14) Trochanter to tarsus III; (15) Trochanter to tarsus IV; (16) palp; (17) Peritreme.