Rhinophytoptus tremae, Wang, Guo-Quan, Wei, Sui-Gai & Yang, Ding, 2010

Wang, Guo-Quan, Wei, Sui-Gai & Yang, Ding, 2010, Four new species of the family Diptilomiopidae (Acari: Eriophyoidea) from China, Zootaxa 2442, pp. 39-50 : 45

Rhinophytoptus tremae sp. nov.

( Fig. 3 )

Female (n = 12) Body fusiform, white or yellowish, 285 (275–304), 75 (72–81) wide, 83 (79–85) thick. Gnathosoma— 44 (44–45), abruptly curved downward, pedipalp fusiform; dorsal pedipalp genual setae (d) 5 (5–6), pedipalp coxal setae (ep) 5 (5–6), palp tarsal ventral setae (v) 2 (2–3); cheliceral stylets 51 (50–53). Prodorsal shield— 48 (46–51), 70 (68–72) wide, frontal lobe present; median line absent, admedian and submedian lines incomplete; a short transverse line connects admedian lines, each lateral margin of shield sculptured with short lines. Scapular tubercles set ahead of rear shield margin, 27 (26–28) apart, scapular setae (sc) minute, 2 (2–3), directed forward. Coxisternal plates— Coxisternal plates І separated, smooth; anterolateral setae on coxisternum І (1b) 10 (9–12), 12 (12–13) apart; proximal setae on coxisternum І (1a) 11 (10–12), 8 (7–8) apart; proximal setae on coxisternum ІІ (2a) 50 (45–53), 23 (22–24) apart. Coxal-genital annuli 10. Legs— Segments normal. Legs І 53 (50–56), trochanter long, 7 (7–8), femur 15 (14–16), basiventral femoral setae (bv) 19 (17–22); genu 7 (7–8), antaxial genual setae (l'') 45 (38–50); tibia 13 (12– 13), paraxial tibial setae (l ʹ) located at 2/5 from base, 4 (4–5); tarsus 11 (10–11), paraxial fastigial tarsal setae (ft') 28 (25–30), antaxial fastigial tarsal setae (ft'') 30 (27–33), paraxial unguinal tarsal setae (u') 7 (6–7); tarsal empodium (ω) entire, 10 (10–11), 6-rayed, tarsal solenidion 9 (9–10), knobbed. Legs ІІ 46 (42–50), trochanter 4 (4–5); femur 15 (14–16), basiventral femoral setae (bv) 13 (11–15); genu 6 (5–6), antaxial genual setae (l'') 12 (10–13); tibia 10 (9–10); tarsus 11 (10–11), paraxial fastigial tarsal setae (ft') 13 (10–17), antaxial fastigial tarsal setae (ft'') 35 (29–43), paraxial unguinal tarsal setae (u') 5 (5–6); tarsal empodium (ω) entire, 10 (10– 11), 6-rayed, tarsal solenidion 9 (9–10), knobbed. Opisthosoma— Evenly round, dorsal annuli 22, with filamentous microtubercles on rear annular margin; ventral annuli narrower before genitalia with 8–10 annuli and equal to dorsal annuli after genitalia with 22 annuli; ventral annuli with filamentous microtubercles on rear annular margin; setae c2 10 (9–10), on 7th ventral annulus; setae d 8 (7–9), 40 (38–42) apart, on 11th ventral annulus; setae e 9 (9–10), 18 (16–19) apart, on 16th ventral annulus; setae f 30 (28–33), 19 (18–21) apart, on 7th ventral annulus from rear; setae h1 2 (2–3), setae h2 75 (70–82). Female genital coverflap— 21 (20–22), 38 (37–39) wide, smooth, proximal setae on coxisternum ІІІ (3a) 8 (7–9), 15 (14–16) apart.

Male. Not seen.

Type data. Holotype, female, Tianmushan National Nature Reserve (30°22’N, 119°28’E), Lin’an county, Zhejiang, China, 20-July-2007, from Trema cannabina Lour. (Ulmaceae) , collected by Guo-Quan Wang. Paratypes, 11 females, were mounted on 11 slides, with the same data as holotype.

Relation to host. The mites are vagrants on the leaf undersurfaces, no visible damage seen.

Etymology. The specific designation is derived from the generic name of the type host plant.

Remarks. The new species is close to R. sericeaomeiensis Xue, Song & Hong, 2009 a, but can be separated from the latter by the following: Prodorsal shield with a short transverse line connecting admedian lines, each lateral margin of the shield sculptured with the short lines and tarsal solenidion knobbed. In R. sericeaomeiensis , the prodorsal shield is without transverse lines, each lateral margin of the shield is not sculptured with the short lines and the tarsal solenidion I rod-like (Xue et al. 2009).

Figures

FIGURE 3. Rhinophytoptus tremae sp. nov. CGF—coxal-genital area of female; D—dorsal aspect of female; Eempodium; GM—male genitalia; L—lateral view of female; L 1 — Legs І; L 2 — Legs І (Scale bar: CGF— 65, D, L— 106; E— 20; L 1, L 2 — 34).