Epitrimerus cotoneasteri, Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2007

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2007, Seven new species of the genus Epitrimerus Nalepa (Acari: Eriophyidae: Phyllocoptinae) from China, Zootaxa 1406, pp. 1-15 : 10-12

Epitrimerus cotoneasteri sp. nov.

( Fig. 6 )

Description. FEMALE: (n = 7) Body fusiform, 185 (179–190) long, 60 (58–62) wide, 58 (57–60) thick; light yellow. Gnathosoma 14 (13–15), projecting obliquely down, pedipalp coxal setae (ep) 3 (2–3), dorsal pedipalp genual setae (d) 5 (4–6), chelicerae 11 (10–11), oral stylets 9 (8–9). Prodorsal shield 48 (46–49), 52 (50–55) wide; semicircular; frontal lobe present; admedian lines connected anteriorly. Dorsal tubercles ahead of rear margin, 15 (14–15) apart, scapular setae (sc) 10 (10–11) projecting centrad. Coxal area with short lines; anterolateral setae on coxisternum І (1b) 9 (7–11), proximal setae on coxisternum І (1a) 22 (21–23), proximal setae on coxisternum І (2a) 38 (35–41). Prosternal apodeme present. Legs with usual series of setae. Legs І 30 (28–32), femur 9 (9–10), basiventral femoral setae (bv) 10 (10–11); genu 5 (4–5), antaxial genual setae (l'') 18 (17–19); tibia 8 (7–8), paraxial tibial setae (l') 3 (3–4), setae located 1/3 from dorsal base; tarsus 5 (5–6); tarsal empodium simple, 5-rayed, tarsal solenidion knobbed. Legs І 28 (26–30), femur 7 (7–8), basiventral femoral setae (bv) 9 (9–10); genu 4 (4–5), antaxial genual setae (l'') 5 (4–5); tibia 5 (5–6); tarsus 5 (5–6); tarsal empodium simple, 5-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 65 (62–67) annuli, smooth, ventrally with 70 (67–76) microtuberculate annuli. Setae c2 18 (18–19) on ventral annulus 9 (8–9); setae d 50 (45–52) on ventral annulus 25 (23–26); setae e 13 (12–15) on ventral annulus 46 (44–47), setae f 23 (22–26) on 7th ventral annulus from rear. Setae h1 3 (3–4). Female genitalia 12 (12–13) long, 21 (21–22) wide, coverflap with 10 longitudinal ridges, proximal setae on coxisternum ІІ (3a) 24 (23–25).

MALE: Unknown.

Types. Holotype, female, China: Shaanxi Province, Yang County, 33°35.23’N, 107°32.26’E. August 9, 2005, from Cotoneaster sp. B. Ehrhart ( Rosaceae ), coll. Xue, Xiao-Feng and Song, Zi-Wei. Paratypes, 6 females, with the same data as holotype.

Relation to host. Vagrant on leaf surface. No damage to the host was observed.

Etymology. The specific designation cotoneasteri is from the generic name of type host plant, Cotoneaster .

Remarks. This species is similar to Epitrimerus spiraeae Kuang, 1995 , but can be differentiated by the presence of admedian lines (admedian and submedian lines present in E. spiraeae ), paraxial tibial setae (l') located 1/3 from dorsal base (paraxial tibial setae located at center in E. spiraeae ), tarsal solenidion knobbed (tarsal solenidion rodlike in E. spiraeae ).

Figures

FIGURE 6. Epitrimerus cotoneasteri sp. nov. A, dorsal view of female; B, coxae and female genitalia; C, legs І and І; D, lateral microtubercles; E, empodium.