Tydeus clavimaculatus Kazmierski

Ripka, Geza, Laniecka, Izabella & Kazmierski, Andrzej, 2013, On the arboreal acarofauna of Hungary: Some new and rare species of prostigmatic mites (Acari: Prostigmata: Tydeidae, Iolinidae and Stigmaeidae), Zootaxa 3702 (1), pp. 1-50: 10-12

Tydeus clavimaculatus Kazmierski  Edit sp. nov.

( Figs. 7–10)

Tydeus cf. maculatus  Edit sp. n. IV, Ripka & Kaźmierski 1998 a: 412 Tydeus cf. maculatus  Edit sp. n., Çobanoglu & Kaźmierski 1999: 76.

Type material. Tritonymph holotype, 1 tritonymph paratype (slide N o 925 =AK H- 295) from Aesculus pavia  Edit L. ( Hippocastanaceae  Edit ), HUNGARY: Zirc (Veszprém County), 26 May 1997, coll. G. Ripka. 1 tritonymph paratype (slide N o 929 =AK H- 297) from leaves of Acer campestre  Edit L. ( Aceraceae  Edit ), HUNGARY: Zirc (Veszprém County), 26 May 1997, coll. G. Ripka; 3 tritonymph paratypes (slide N o 929 b =AK H- 298) from leaves of Acer campestre  Edit , same locality and date, coll. G. Ripka.

Additional material. 2 tritonymphs (slide N o 8-330) from Fagus orientalis Lipsky  Edit ( Fagaceae  Edit ), TURKEY: Istranca Mountains, Kirklareli, 14 June 1992, coll. Sultan Çobanoglu.

Type repository. DAM.

Etymology. The specific name is a combination of the empodial claw (present in this species) and the name of the closely related T. maculatus (Momen and Lundqvist)  Edit (in which the empodial claw is absent) (Momen & Lundqvist 1996).

Relation to host. Underside of leaves of Aesculus pavia  Edit . Aphididae  Edit : Periphyllus testudinaceus (Fernie)  Edit ; Phytoseiidae  Edit : Euseius finlandicus (Oudemans)  Edit ; Tydeidae  Edit : Tydeus calabrus (Castagnoli)  Edit [lower side of leaves].

Acer campestre  Edit . Eriophyidae  Edit : Aceria cephalonea (Nalepa)  Edit ; Tydeidae  Edit : Tydeus calabrus (Castagnoli)  Edit ; Meyerellidae  Edit : Triophtydeus triophthalmus (Oudemans)  Edit ; Winterschmidtiidae  Edit : Czenspinskia trasversostriata (Oudemans)  Edit [underside of leaves of field maple].

Differential diagnosis. The new species is similar to Tydeus maculatus  Edit , mainly because of dorsal ornamentation (”Tydulosus” type, or “basket weave”—see Kaźmierski [1998 b]). However, it differs by two features: [1] the presence of the empodial claws (absent in T. maculatus  Edit ), and [2] the shape of the tip of tarsal eupathidium pζ, which is forked distally (instead of “T”-shaped in T. maculatus  Edit ).

Description. TRITONYMPH (holotype). Organotaxy of gnathosoma, idiosoma and appendages—typical for genus (Kaźmierski 1989 b). Idiosoma. Body oval, yellowish. Length 245, width 185. Paratype tritonymphs: length 240–245 / width 180–185. Dorsally, laterally and on the circumference of ventral side covered with granulations, “basket weave”. Striae between setae d 1 transverse. On aspidosoma striae are longitudinal. Eyes not observed.

Bothridial setae (bo) whip-like, rather flabby than stout and longer than the other dorsal body setae. Latter are serrated and representing 2 different kinds: (1) narrowly lanceolate and pointed distally: ro, la, ex, c 1, c 2, d 1, and (2) flat, spatulate: e 1, f 1, f 2, h 1, h 2 and ps 1. Lengths as follows: bo 37, ro 15, la 18, ex 20, c 1 18, c 2 20, d 1 18, remaining setae (e 1 – ps 1, spatulate)— 15. Setae ps 2 acute 12. Distances: c 1 –c 1 43, d 1 –d 1 32, e 1 –e 1 105, f 1 –f 1 48, h 1 –h 1 48, ps 1 –ps 1 14, f 1 –h 1 27. Lyrifissures invisible, probably hidden between granules of ornamentation. Coxal organ (cg) oval. Venter striated medially. Striae longitudinal in metasternal region. Genital region with 2 genital pores flanked by 4 pairs of genital and aggenital setae: genital setal formula: (4 - 4). Paraproctal lips prominent and strongly striated. Setae ps 2 laterally of and close to lips. Epimeral formula: (3 - 1-4 - 2).

Gnathosoma. Visible from above. Cheliceral stilettos similar in length to palpal tarsus (only slightly longer). Eupathidium (pζ) insignificantly bent, forked distally. Seta d forked distally. Minute seta ba relatively well developed. Palpal chaetotaxy: 6 + ω – 2 – 2. Measurements: stiletto 15.5, palpal femuro-genu 20 / 9, df 12, dg 13, t’ 15, t’’ 8, palpal tarsus 14 / 5, (pζ) 5.

Legs. Setation: I (8 + ω - 3 + k’’ - 3 - 3 - 1), II (6 + ω - 2 - 2 - 2 -0), III (5 - 2 - 1 - 1 - 1), IV (5 - 2 - 1 - 1 -0). Solenidiotaxy: 2 (ωI + ωII). Tarsus+apotele I: length 33, width 12, height 13. Length of ωI: 4, ft’ 12, ft’’ζ 18, k’’ 4 (forked distally), ωII 1.5. Empodial hooks (om) present, small.

Figures

FIGURE 7. Tydeus clavimaculatus Kazmierski, sp. nov., holotype tritonymph: dorsal side.

FIGURE 8. Tydeus clavimaculatus Kazmierski, sp. nov., holotype tritonymph: ventral side, genital and pseudanal region.

FIGURE 9. Tydeus clavimaculatus Kazmierski, sp. nov., holotype tritonymph. (A) left leg I (dorsally, somewhat paraxially); (B) left leg II (dorsally, slightly paraxially); (C) cheliceral stiletto; (D) left palpus (dorso-paraxial view); (E) dorsal idiosomal setae (trichobothrium, aspidosomal ro, opisthosomal h 2).

FIGURE 10. Tydeus clavimaculatus Kazmierski, sp. nov., holotype tritonymph. (A) general aspect; (B) fragment of dorsal granulation (“ basketweave ”); (C) left tarsus and tibia of leg I; (D) ventral side: genital and pseudanal region.