Epitrimerus integrae, 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 : 13

Epitrimerus integrae sp. nov.

( Fig. 7 )

Description. FEMALE: (n = 4) Body fusiform, 196 (188–220) long, 68 (63–72) wide, 65 (62–69) thick; light yellow. Gnathosoma 38 (35–41), projecting obliquely down, pedipalp coxal setae (ep) 3 (2–3), dorsal pedipalp genual setae (d) 8 (7–8), chelicerae 25 (25–27), oral stylets 22 (21–22). Prodorsal shield 49 (49–50), 56 (52– 59) wide; sub quadrangular; frontal lobe present; median line present 1/6 at base and connected with admedian lines, admedian and submedian lines connected at basal 1/6 and center. 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 (7–10), proximal setae on coxisternum І (1a) 17 (16–18), proximal setae on coxisternum І (2a) 31 (30–32). Prosternal apodeme present. Legs with usual series of setae. Legs І 31 (29–33), femur 8 (8–9), basiventral femoral setae (bv) 10 (10–11); genu 5 (5–6), antaxial genual setae (l'') 25 (24–25); tibia 8 (8–9), 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 28 (26–30), femur 7 (7–8), basiventral femoral setae (bv) 9 (9–10); genu 4 (4–5), antaxial genual setae (l'') 7 (6–7); tibia 7 (7–8); tarsus 6 (5–6); tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 42 (41–44) annuli, with elliptical microtubercles, ventrally with 74 (71–77) microtuberculate annuli. Setae c2 20 (19–22) on ventral annulus 12 (12–13); setae d 51 (50–51) on ventral annulus 28 (26–29); setae e 21 (20–23) on ventral annulus 48 (46–49), setae f 24 (23–24) on 6th ventral annulus from rear. Setae h1 3 (3–4). Female genitalia 15 (15–16) long, 22 (21–23) wide, coverflap with 10 to 12 longitudinal ridges, proximal setae on coxisternum ІІ (3a) 22 (21–23).

MALE: (n = 2) Body fusiform, 182–175 long, 55–56 wide; light yellow. Gnathosoma 31–32, projecting obliquely down, pedipalp coxal setae (ep) 1–2, dorsal pedipalp genual setae (d) 5–6, chelicerae 23–24, oral stylets 20–21. Prodorsal shield 45–46, 47–49 wide; sub quadrangular; frontal lobe present. Dorsal tubercles ahead of rear margin, 13–14 apart, scapular setae (sc) 7–8 projecting centrad. Coxal area with short lines; anterolateral setae on coxisternum І (1b) 5–7, proximal setae on coxisternum І (1a) 12–13, proximal setae on coxisternum І (2a) 22–25. Prosternal apodeme present. Legs with usual series of setae. Legs І 25–26, femur 6–7, basiventral femoral setae (bv) 7–9; genu 4–5, antaxial genual setae (l'') 21–22; tibia 6–7, paraxial tibial setae (l') 4, setae located 1/3 from dorsal base; tarsus 4; tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Legs І 22–23, femur 5–6, basiventral femoral setae (bv) 6–7; genu 3, antaxial genual setae (l'') 4–5; tibia 5; tarsus 4; tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 33–35 annuli, with elliptical microtubercles, ventrally with 65–69 microtuberculate annuli. Setae c 2 16–17 on ventral annulus 10; setae d 46 on ventral annulus 22; setae e 15–16 on ventral annulus 41, setae f 13–16 on 6th ventral annulus from rear. Setae h1 2. Male genitalia 6–7 long, 17–18 wide, proximal setae on coxisternum III (3a) 20–22.

Types. Holotype, female, China: Shaanxi Province, Zhouzhi County, 33°53.30’N, 108°00.34’E. August 13, 2005, from Salix integra Thunb. (Salicaceae) , coll. Xue, Xiao-Feng and Song, Zi-Wei. Paratypes, 3 females and 2 males, with the same data as holotype.

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

Etymology. The specific designation integrae is from the specific epithet name of type host plant, integra .

Remarks. This species is similar to Epitrimerus virginiana Keifer, 1959 , but can be differentiated by female genital coverflap with 10 to 12 longitudinal ridges (female genital coverflap with 14 longitudinal ridges in E. virginiana ), admedian and submedian lines connected at center (admedian and submedian lines connected at center and basal 3/ 4 in E. virginiana ).

Figures

FIGURE 7. Epitrimerus integrae 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.