Aculus lydii, 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 : 261-263

Aculus lydii n. sp. Denizhan & Bromberek

( Figs. 5 & 6 )

Description. FEMALE (n=12). Body spindleform, 200 (220–268); 55 (61–86) wide. Gnathosoma curved downwards, 20 (20–29), dorsal pedipalpal genual seta d 8 (6–9), palpcoxal seta ep 4 (3–4), cheliceral stylets 19 (17–24). Prodorsal shield semicircular with long, rounded lobe over gnathosoma, 40 (36–50), 60 (55–60) wide; ornamentation: lines not well visible, median line on posterior half of shield, admedian and submedian I complete, submedian II arched on posterior half of shield. Tubercles of setae sc on rear shield margin, 30 (26–31) apart, seta sc 15 (11–16). Leg I 33 (30–38); femur 10 (9–20), genu 6 (5–6), tibia 7 (6–8); tarsus 6 (5–7); solenidion curved 7 (5–8); empodium 6 (5–6), simple, bilaterally symmetrical, with 6 (6) paired rays; femoral setae bv 11 (11–12), genual setae l′′ 26 (25–28), tibial setae l ′ 5 (5–6), tarsal setae ft ′ 23 (20–23), setae ft′′ 24 (23–25), setae u ′ 7 (6–7). Leg II 36 (33–39); femur 8 (8–9), genu 6 (5–6), tibia 7 (5–7); tarsus 5 (5–7); solenidion curved 6 (5–6); empodium 6 (5–6), simple, bilaterally symmetrical, with 6 (6) paired rays; femoral setae bv 12 (12–13), genual setae l′′ 13 (13–15), tarsal setae ft ′ 8 (8–10), setae ft′′ 21 (20–24), setae u ′ 6 (5–6). Coxal plates with longitudinal dashes; suboral plate smooth. Setae 1b 11 (8–10), 9 (12–15) apart; setae 1a 23 (16–23), 8 (7–9) apart; setae 2a 26 (22–26), 27 (23–35) apart; sternum 9 (9–13). Opisthosoma with 50 (49–54) dorsal annuli with tiny microtubercles, 56 (59– 63) ventral annuli with bead-like microtubercles; microtubercles elongated on posterior 2nd (1st–4th) dorsal annuli. Setae c2 22 (20–24), on 3rd (3rd to 4th) annulus; setae d 55 (36–58), on 17th (13th to 19th) ventral annulus; setae e 32 (26–36), on 34th (28th to 36th) ventral annulus; setae f 30 (29–31), on 52nd (54th to 59th) ventral annulus, 6th (6th) ventral annulus from rear. Setae h1 6 (5–10); setae h2 41 (38–50). External genitalia 17 (17– 23), 25 (25–28) wide, genital coverflap with 13 (11–16) striae; setae 3a 27 (27–30), 20 (19–20) apart.

Male, nymph and larva. Not found.

Type host plant. Hypericum lydium Boiss. (Hypericaceae) . Relation to host plant. The mites were vagrant on leaves. Type locality. Geva in Van, Turkey (3817'52"N, 4306'43"E), altitude 1044 m above sea level, coll. E.

Denizhan, 16 June 2008.

Type material. Holotype female [4018(1)] and 7 female paratypes: [4011, 4013, 4017, 4018(2), 4019(1), 4019(2) & 4023] deposited in the collection of the Faculty of Biology, Adam Mickiewicz University, Poznań, Poland and 4 female paratypes [4020–4022(1–2)] 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 new species name (adjective in the genitive case, masculine) is derived from the specific name of its host plant.

Differential diagnosis. Aculus lydii n. sp. can be differentiated from a closely-related species, Aculus hyperici ( Liro, 1943) on Hypericum perforatum L., which was first described from Finland by: its body length (155–170 in A. hyperici ; 200–268 in A. lydii n. sp.), the number of opisthosomal annuli (38–40 in A. hyperici compared with 49–54 dorsal and 59–63 ventral in A. lydii sp. n.) and the ornamentation of the prodorsal shield (smooth in A. hyperci ; ornamented in A. lydii n. sp.). Both species are leaf vagrants.

Figures

FIGURE 5. Semi-schematic line drawings of Aculus lydii n. sp., female: V. Ventral view; AD. Prodorsal shield; IG. Internal genitalia; em. Empodium; LM. Lateral view of microtubercles. Scale bar = 50 Μm for V and AD; 24 Μm for IG; 8 Μm for em; LM enlarged.

FIGURE 6. Micrographs of Aculus lydii n. sp., female, as viewed under phase contrast: 1. Ventral view; 2. Dorsal view. Scale bar = 20 Μm for 1 and 2.