Aculus spectabilis, Kiedrowicz, Agnieszka, Denizhan, Evsel, Bromberek, Klaudia, Szydło, Wiktoria & Skoracka, Anna, 2016

Kiedrowicz, Agnieszka, Denizhan, Evsel, Bromberek, Klaudia, Szydło, Wiktoria & Skoracka, Anna, 2016, Eriophyoid mites (Acari: Prostigmata: Eriophyoidea) from Turkey: description of five new species, Zootaxa 4066 (3), pp. 255-270 : 267

Aculus spectabilis n. sp. Denizhan & Kiedrowicz

( Figs. 9 & 10 )

Description. FEMALE (n=11). Body spindleform, 273 (220–290); 66 (55–70) wide. Gnathosoma curved downwards, 20 (19–20), dorsal pedipalpal genual seta d 3 (3–5), palpcoxal seta ep 2 (2), cheliceral stylets 16 (14– 16). Prodorsal shield subtriangular smooth, with short lobe, 35 (32–36), 55 (52–56) wide. Tubercles of setae sc on rear shield margin, 35 (33–35) apart, seta sc 35 (33–40), stout. Leg I 31 (28–36); femur 7 (7–8), genu 5 (5–6), tibia 5 (4–5); tarsus 4 (4–5); solenidion curved 11 (10–14); empodium 6 (6–7), simple, bilaterally symmetrical, with 4 (4) paired rays; femoral setae bv 10 (10–12), genual setae l′′ 16 (16–48), tibial setae l ′ 6 (6–8), tarsal setae ft ′ 14 (14–17), setae ft′′ 20 (20–24), setae u ′ 6 (5–6). Leg II 35 (32–39); femur 7 (7–8), genu 5 (5), tibia 6 (5–6); tarsus 5 (5–6); solenidion curved 10 (10–13); empodium 7 (6–8), simple, bilaterally symmetrical, with 4 (4) paired rays; femoral setae bv 9 (9–11), genual setae l′′ 10 (8–11), tarsal setae ft ′ 8 (7–8), setae ft′′ 19 (19–23), setae u ′ 5 (5–6). Coxal plates and suboral plate smooth. Setae 1b 6 (5–6), 10 (8–10) apart; setae 1a 10 (9–13), 5 (5–6) apart; setae 2a 27 (28–32), 20 (19–24) apart; sternum 7 (6–10). Opisthosoma with 30 (28–31) annuli with elongated, partially covered microtubercles, 66 (56–66) ventral annuli with small pointed microtubercles elongated near posterior 1 (1– 3) dorsal annuli. Setae c2 15 (13–18), on 4th (3th to 5th) annulus; setae d 36 (30–46), on 15th (14th to 17th) ventral annulus; setae e 11 (9–14), on 28th (26th to 33rd) ventral annulus; setae f 31 (23–33), on 59th (52th to 61st) ventral annulus, 7th (7th) ventral annulus from rear. Setae h1 3 (3–4); setae h2 60 (50–63). External genitalia 17 (15–18), 22 (20–22) wide, genital coverflap with 10 (8–13) striae; setae 3a 16 (12–18), 20 (20–23) apart.

Male, nymph and larva. Not found.

Type host plant. Stachys spectabilis Choisy ex DC. ( Lamiaceae ).

Relation to host plant. The mites were vagrant on leaves.

Type locality. Muradiye, Van, Turkey (43°45'38"E, 39°03'23"N), altitude 1712 m above sea level, coll. E. Denizhan, 30 June 2008.

Type material. Holotype female [4028(2)] and 7 female paratypes: [4024–4027, 4028(1), 4030 & 4031] deposited in the collection of the Faculty of Biology, Adam Mickiewicz University, Poznań, Poland and 3 female paratypes [4032 & 4033 (1–2)] deposited in the collection of Department of Applied Entomology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences – SGGW, Warsaw, Poland.

Etymology. The new species name (adjective in the genitive case, masculine) is derived from the specific name of the host plant.

Differential diagnosis. The new species is closely related to Aculus stachysi ( Petanovic & Boczek, 1991) found on Betonica officinalis L. (originally listed as Stachys allopecuros (L.) Benth.) in Montenegro and can be distinguished by: body length, prodorsal shield shape, setae sc, solenidion and appearance of the dorsal microtubercles. In A. stachysi , the body size ranges from 158 to 180, the shield is triangular with regular sc setae, the solenidion is knobbed, and the dorsal microtubercles are indistinct. In the new species, the body size ranges from 220 to 290, the prodorsal shield is subtriangular with rounded lateral margins and stout sc setae, the solenidia are not knobbed and the dorsal microtubercles are elongated. Both species are vagrant on the leaves of their host plants.

Figures

FIGURE 9. Semi-schematic line drawings of Aculus spectabilis n. sp., female: D. Dorsal view; em. Empodium; AD. Prodorsal shield; CG. Coxigenital region; IG. Internal genitalia. LM. Lateral view of microtubercles; LMT. Lateral view of microtubercles in telson region. Scale bar = 20 Μm for D; 35 Μm for AD; 23 Μm for IG; 7 Μm for em; LM and LMT enlarged.

FIGURE 10. Micrographs of Aculus spectabilis n. sp., female, as viewed under phase contrast: 1. Lateral view; 2. Dorsal view; 3. Ventral view. Scale bar = 20 Μm for 1; 10 Μm for 2 and 3.