Epitrimerus argyris, 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 : 6-8

Epitrimerus argyris sp. nov.

( Fig. 3 )

Description. FEMALE: (n = 10) Body fusiform, 189 (175–205) long, 55 (52–57) wide, 50 (48–52) thick; light yellow. Gnathosoma 15 (15–16), projecting obliquely down, pedipalp coxal setae (ep) 2 (2–3), dorsal pedipalp genual setae (d) 6 (5–6), chelicerae 14 (12–14), oral stylets 10 (10–11). Prodorsal shield 53 (51– 54), 47 (45–49) wide; semicircular; frontal lobe broad; admedian and submedian lines incomplete; prodorsal shield with many dashes. Dorsal tubercles ahead of rear margin, 20 (19–21) apart, scapular setae (sc) 12 (10– 13) projecting centrad. Coxal area smooth; anterolateral setae on coxisternum І (1b) 8 (7–8), proximal setae on coxisternum І (1a) 22 (21–24), proximal setae on coxisternum І (2a) 40 (38–45). Prosternal apodeme present. Legs with usual series of setae. Legs І 28 (26–30), femur 7 (7–8), basiventral femoral setae (bv) 11 (10–13); genu 5 (5–6), antaxial genual setae (l'') 23 (21–25); tibia 6 (6–7), paraxial tibial setae (l') 6 (5–6), setae located 1/3 from dorsal base; tarsus 6 (5–6); tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Legs І 26 (24–28), femur 7 (7–8), basiventral femoral setae (bv) 10 (10–11); genu 5 (4–5), antaxial genual setae (l'') 9 (8–10); tibia 6 (5–6); tarsus 6 (5–6); tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 48 (46–53) annuli, with filamentous microtubercles (absent from 7th dorsal annulus from the rear), ventrally with 66 (65–72) microtuberculated annuli. Setae c2 25 (25– 26) on ventral annulus 12 (12–13); setae d 40 (34–36) on ventral annulus 26 (26–27); setae e 15 (14–16) on ventral annulus 45 (44–47), setae f 17 (15–19) on 6th ventral annulus from rear. Setae h1 2 (2–3). Female genitalia 14 (14–15) long, 20 (20–21) wide, coverflap with 8 longitudinal ridges, proximal setae on coxisternum ІІ (3a) 20 (19–22).

MALE: (n =1) Body fusiform, 160 long, 53 wide, light yellow. Gnathosoma 13, projecting obliquely down, pedipalp coxal setae (ep) 2, dorsal pedipalp genual setae (d) 4, chelicerae 11, oral stylets 8. Prodorsal shield 46, 43 wide; semicircular; frontal lobe broad. Dorsal tubercles ahead of rear margin, 16 apart, scapular setae (sc) 9 projecting centrad. Coxal area smooth; anterolateral setae on coxisternum І (1b) 5, proximal setae on coxisternum І (1a) 15, proximal setae on coxisternum І (2a) 32. Prosternal apodeme present. Legs with usual series of setae. Legs І 24, femur 6, basiventral femoral setae (bv) 8; genu 4, antaxial genual setae (l'') 19; tibia 5, paraxial tibial setae (l') 3, setae located 1/3 from dorsal base; tarsus 5; tarsal empodium simple, 4- rayed, tarsal solenidion knobbed. Legs І 22, femur 5, basiventral femoral setae (bv) 7; genu 3 antaxial genual setae (l'') 6; tibia 3; tarsus 5; tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 42 annuli, with filamentous microtubercles, ventrally with 55 microtuberculated annuli. Setae c2 21 on ventral annulus 10; setae d 35on ventral annulus 22; setae e 14 on ventral annulus 41, setae f 15 on 6th ventral annulus from rear. Setae h1 2. Female genitalia 7 long, 18 wide, proximal setae on coxisternum III (3a) 15.

Types. Holotype, female, China: Shaanxi Province, Foping County, 33°30.48’N, 107°58.52’E. September 5, 2004, from Artemisia argyri Lévl. & Vant. (Compositae) , coll. Xue, Xiao-Feng & Song, Zi-Wei. Paratypes, 9 females and 1 male, with the same data as holotype.

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

Etymology. The specific designation argyris is from the specific epithet of type host plant, argyri .

Remarks. This species is similar to Epitrimerus englerus Huang, 2001 b, but can be differentiated by the absence of the median line (median line present in E. englerus ), setae h1 present (setae h1 absent in E. englerus ), female genital coverflap with 8 ridges (female genital coverflap smooth in E. englerus ).

Figures

FIGURE 3. Epitrimerus argyris sp. nov. A, dorsal view of female; B, coxae and female genitalia; C, legs І and І; D, lateral microtubercles; E, empodium; F, male genitalia.