Trimeroptes kakius, Xie, Man-Chao & Zhu, Ming-Sheng, 2010

Xie, Man-Chao & Zhu, Ming-Sheng, 2010, Two new species of eriophyoid mites (Acari: Eriophyoidea) on persimmon, Diospyros kaki Linn. (Ebenaceae), from Shaanxi Province, China, Zootaxa 2445, pp. 62-68 : 65-67

Trimeroptes kakius n. sp.

( Fig. 2 )

FEMALE (n = 14). Body fusiform, 245 (200–245) long, 83 (75–83) wide, 72 (70–72) thick. Gnathosoma— Large, 49 long, abruptly bent down at right angles; dorsal pedipalp genual setae (d) 10. Prodorsal shield— 50 (45–50) long, 66 (60–70) wide, covered with white wool-like wax; frontal lobe deeply emarginated and divided apically; shield design with median and admedian lines incomplete, submedian lines absent. Dorsal tubercles near rear shield margin, 33 (33-35) apart, a transverse arc line between dorsal tubercles; scapular setae (sc) 15, projecting forwards. Coxae— Coxae І separated, coxal area with short lines and granules; anterolateral setae on coxisternum І (1b) 16 (15–16), 16 (15–16) apart; proximal setae on coxisternum І (1a) 13 (13–16), 10 (8–12) apart; proximal setae on coxisternum І (2a) 35 (35–45), 33 (25–33) apart. Legs— Segments normal. Leg I 42 (38–44), femur 12 (12-13), basiventral femoral setae (bv) absent; genu 7 (5–7), antaxial genual setae (l") 40 (35–41); tibia 13 (11–13), paraxial tibial setae (l') 8 (5–10); tarsus 8 (8–9), tarsal setae ft' 24 (20–24), tarsal setae ft" 24 (20–24), and tarsal setae u ʹ 6 (5–6); tarsal empodium divided, each branch 5-rayed; tarsal solenidion 7 (6–7) long, knobbed. Leg І 38 (36–40), femur 12 (12-13), basiventral femoral setae (bv) absent; genu 6 (5–6), antaxial genual setae (l") 7 (5–7); tibia 10 (9–10); tarsus knobbed. Opisthosoma— Dorsal annuli 44–48, covered with white wool-like wax; dorsal opisthosoma with three ridges forming two furrow, median ridge bifurcated anteriorly; ventral annuli 73–78, with round microtubercles except caudal 7–8 ventral annuli with elongated microtubercles. Setae c2 15 (15–20), 76 (63– 76) apart, on 13–14th ventral annulus; setae d 33 (33–45), 50 (50–52) apart, on 31–32nd ventral annulus; setae e 15 (10–17), 30 (28-30) apart, on 49-50th ventral annulus; setae f 30 (30–33), 25 (20–25) apart, on 8th ventral annulus from rear. Setae h1 absent, setae h2 90 (60–90). Female genital coverflap— Coverflap 27 (26–27) long, 38 (37–38) wide, basally with 10–12 short lines, and distally smooth, proximal setae on coxisternum ІІ (3a) 10 (10–12), 21 (20–21) apart.

Male (n = 5). 165–178 long, 68–70 wide; genitalia 20–22 wide, proximal setae on coxisternum ІІ (3a) 7– 8, 18–20 apart.

Type data. Holotype, female, Xiangxidong (32°40'N, 109º18'E), three kilometers south of Ankang city, Shaanxi province, China. 6-Jul.-2008, from Diospyros kaki (Ebenaceae) collected by Manchao Xie. Paratypes, thirteen females and five males, with the same data as holotype.

Relation to host. The mites are vagrant on the undersurfaces of leaves. No obvious damage to the host was seen.

Etymology. kakius is derived from the name of the type host plant, us as masculine ending.

Remarks. This new species is similar to Trimeroptes ilicifolia Keifer, 1964 , but can be differentiated by the prodorsal shield with median and admedian lines, a transverse arc-line between dorsal tubercles, and the coverflap with 10–12 basal lines. In T. ilicifolia , the prodorsal shield design is obsolete or has weak median and admedian lines, has no transverse arc-line between dorsal tubercles, and the coverflap has obscure basal lines.

Figures

FIGURE 2. Trimeroptes kakius n. sp. AL—antero-lateral view of female; CGF—coxal-genital region of female; Ddorsal view of female; E—empodium (enlarged); GM—genital region of male; L 1 — Legs; L 2 — Legs.