Aceria vanensis, 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 : 256-258

Aceria vanensis n. sp. Denizhan & Kiedrowicz

( Figs. 1 & 2 )

Description. FEMALE (n=7). Body vermiform, 263 (170–280); 56 (53–65) wide. Gnathosoma curved downwards, 18 (16–18), dorsal pedipalpal genual seta d 5 (4–6), palpcoxal seta ep 3 (3–4), cheliceral stylets 18 (16–20). Prodorsal shield semicircular; indistinct, incomplete admedian lines on rear part of shield, 27 (25–30), 42 (40–45) wide. Tubercles of setae sc on rear shield margin, 35 (30–38) apart, seta sc 26 (26–35). Leg I 30 (29– 34); femur 9 (9–10), genu 5 (4–5), tibia 4 (4); tarsus 5 (5–6); solenidion curved 5 (5–6); empodium 6 (6), simple, bilaterally symmetrical, with 6 (6) paired rays; femoral setae bv 15 (11–15), genual setae l′′ 20 (20–25), tibial setae l ′ 8 (7–8), tarsal setae ft ′ 11 (11–13), setae ft′′ 23 (23–25), setae u ′ 5 (5). Leg II 31 (31–34); femur 10 (9–10), genu 4 (4–5), tibia 5 (4–5); tarsus 6 (5–6); solenidion curved 6 (5–6); empodium 7 (6–7), simple, bilaterally symmetrical, with 6 (6) paired rays; femoral setae bv 18 (16–18), genual setae l′′ 14 (12–14), tarsal setae ft ′ 6 (5–6), setae ft′′ 28 (25–28), setae u ′ 4 (4). Coxal plates and suboral plates smooth. Setae 1b 11 (11–13), 8 (8–9) apart; setae 1a 25 (19–25), 7 (7–10) apart; setae 2a 30 (30–33), 18 (18–22) apart; prosternal apodeme 6 (5–7). Opisthosoma with 49 (49–73) dorsal and ventral annuli with minute, ventral and rounded dorsal microtubercles, pointed on dorsal and ventral posterior opisthosoma; ventral microtubercles elongated on posterior 3 (3–4) annuli. Setae c2 31 (25–41), on 3rd (3rd to 5th) annulus; setae d 63 (58–70), on 14th (13th to 21st) ventral annulus; setae e 45 (45–55), on 25th (25th to 36th) ventral annulus; setae f 30 (25–48), on 45th (45th to 67th) ventral annulus, 5th (5th to 6th) ventral annulus from rear. Setae h1 4 (3–4); setae h2 99 (79–99). External genitalia 12 (10–13), 18 (17–20) wide, genital coverflap smooth; setae 3a 21 (21–25), 15 (12–15) apart.

Male, nymph and larva. Not found.

Type host plant. Amaranthus retroflexus L. ( Amaranthaceae ), red-root amaranth.

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

Type locality. Van Hakkari Yolu, Koyunyatağı Mahallesi, Gürpınar/Van, Turkey (38°23'20.65"N, 43°23'37.34"E), 1992 m above sea level, coll. E. Denizhan, 21 July 2008.

Type material. Holotype female [4002(3)] and 3 female paratypes [3999–4001] deposited in the collection of the Faculty of Biology, Adam Mickiewicz University, Poznań, Poland and 3 female paratypes [4002(1), 4002(2), 4003] deposited in the collection of the Department of Applied Entomology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences – SGGW, Warsaw, Poland.

Etymology. The specific mite name (feminine) is derived from the collection locality. In October 2011, an earthquake struck eastern Turkey near the city of Van and about 600 people tragically died in this disaster.

Differential diagnosis. This new species can be differentiated from Aceria amaranthi Abou-Awad & El- Banhawy, 1992 (the only other species described from plants belonging to the genus Amaranthus in Tanzania), by the shape and ornamentation of the prodorsal shield: triangular, with all lines present in A. amaranthi , whereas the prodorsal shield in Aceria vanensis n. sp. is semicircular with incomplete admedian lines. In addition, the shape of the solenidion, i.e. ending with a knob in A. amaranthi (whereas curved and without a knob in the new species), lack of coxal ornamentation, a smooth epigynium and vagrant life style ( A. amaranthi is a gall-making species) separates the new species. The new species somehow resembles Aceria achyranthi Mohanasundaram, 1990 found on Achyranthes aspera (Amaranthaceae) by the prodorsal shield with incomplete admedian lines. However, in A. achyranthi , an incomplete medial line is present. These two species can also be differentiated by the ornamentation of the coxal plates and epigynium (both coxal plates are smooth in A. vanensis n. sp.; with ornamentation in A. achyranthi ). Both species are vagrants on leaves. However, A. achyranthi causes slight rusting, whereas no damage symptoms were observed on the leaves infested by A. vanensis .

Figures

FIGURE 1. Semi-schematic line drawings of Aceria vanensis n. sp., female: V. Ventral view; AD. Prodorsal shield; IG. Internal genitalia; em. Empodium; s. Solenidion. Scale bar = 25 Μm for V and AD; 15 Μm for IG; 8 Μm for em and s.

FIGURE 2. Micrographs of Aceria vanensis n. sp., female, as viewed under phase contrast: 1. Dorsal view; 2. Ventral view. Scale bar = 15 Μm for both 1 and 2.