Epitrimerus buxsinica, Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2008

Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2008, One new genus and four new species of Phyllocoptinae (Acari: Eriophyoidea) from Fujian Province, southeastern China, Zootaxa 1894, pp. 42-52 : 47-48

Epitrimerus buxsinica sp. nov.

( Fig. 2 & 3 )

Description. FEMALE: (n = 10) Body fusiform, 193 (190–194), 54 (52–54) wide, 70 (67–70) thick; light yellow. Gnathosoma 25 (25–26), projecting obliquely down, pedipalp coxal setae (ep) 2 (1–2), dorsal pedipalp genual setae (d) 6 (5–6), chelicerae 23 (23–25). Prodorsal shield 44 (44–45), 45 (45–48) wide; frontal lobe present and broad; prodorsal shield design with incomplete median, admedian and submedian lines, median line only occupies posterior 1/3 of prodorsal shield; admedian and submedian lines sinuous and irregular. Scapular tubercles ahead of rear margin, 25 (25–26) apart, scapular setae (sc) 20 (20–22) projecting forward and centrad. Coxal area with short lines; anterolateral setae on coxisternum I (1b) 8 (8–10), proximal setae on coxisternum I (1a) 18 (18–20), proximal setae on coxisternum II (2a) 32 (30–35). Prosternal apodeme present. Legs: Leg I 35 (33–35), femur 11 (10–11), basiventral femoral seta (bv) 10 (10–12); genu 5 (4–5), antaxial genual seta (l'') 25 (22–25); tibia 6 (6–7), paraxial tibial seta (l') 6 (5–6), seta located 1/2 from dorsal base; tarsus 7 (6–7), tarsal seta (u') 5 (4–5), tarsal empodium simple, 5-rayed, tarsal solenidion rodlike. Leg II 32 (30–32), femur 10 (9–10), basiventral femoral seta (bv) 7 (7–9); genu 4 (4–5), antaxial genual seta (l'') 9 (8–9); tibia 5 (5–6); tarsus 6 (6–7), tarsal seta (u') 5 (4–5), tarsal empodium simple, 5-rayed, tarsal solenidion rodlike. Opisthosoma: dorsal opisthosoma with 34 (34–36) annuli, smooth; dorsal opisthosoma with three dorsal ridges, middorsal ridge fading simultaneously with subdorsal ridges; ventrally with 61 (60–62) annuli, with round microtubercles on annular rear margin. Setae c2 20 (15–20) on ventral annulus 7 (7–8); setae d 46 (46–50) on ventral annulus 22 (19–22); setae e 12 (10–13) on ventral annulus 38 (36–38); setae f 20 (19–20) on 6th ventral annulus from rear. Setae h1 3 (2–3). Female genitalia 10 (9–10), 20 (20–21) wide, coverflap with 10 longitudinal ridges, coverflap with two cross lines at base, proximal setae on coxisternum III (3a) 20 (17–20).

MALE: (n = 4) Body fusiform, 157 (155–160), 50 (50–53) wide, 65 (60–65) thick; light yellow. Gnathosoma 23 (22–23), projecting obliquely down, pedipalp coxal setae (ep) absent, dorsal pedipalp genual setae (d) 5 (5–6), chelicerae 22 (20–22). Prodorsal shield 35 (33–35), 40 (40–42) wide, frontal lobe present; prodorsal shield design with incomplete median, admedian and submedian lines, median line only on posterior 1/ 3 of prodorsal shield; admedian and submedian lines sinuous and arranged irregularly. Scapular tubercles ahead of rear margin, 28 (26–28) apart, scapular setae (sc) 20 (20–22) projecting backwards and outwards. Coxal area with short lines; anterolateral setae on coxisternum I (1b) 8 (8–10), proximal setae on coxisternum I (1a) 10 (10–12), proximal setae on coxisternum II (2a) 33 (30–35). Prosternal apodeme present. Legs: Leg I 31 (28–31), femur 10 (9–10), basiventral femoral seta (bv) 10 (10–12); genu 4 (3–4), antaxial genual seta (l'') 20 (20–21); tibia 6 (5–6), paraxial tibial seta (l') 5 (4–5), located 1/2 from dorsal base; tarsus 6 (5–6), tarsal seta (u') 5 (4–5), tarsal empodium simple, 5-rayed, tarsal solenidion rodlike. Leg II 29 (27–29), femur 9 (8–9), basiventral femoral seta (bv) 8 (6–8); genu 4 (3–4), antaxial genual seta (l'') 10 (8–10); tibia 6 (5–6); tarsus 5 (5–6), tarsal seta (u') 5 (4–5), tarsal empodium simple, 5-rayed, tarsal solenidion rodlike. Opisthosoma: dorsal opisthosoma with 34 (34–35) annuli, smooth; dorsal opisthosoma with three dorsal ridges; ventrally with 38 (34–38) annuli, with round microtubercles on rear annular margins. Setae c2 17 (15–17) on ventral annulus 10 (9–10); setae d 35 (35–36) on ventral annulus 20 (19–20); setae e 6 (6–7) on ventral annulus 30 (29–30); setae f 16 (15–16) on 6th ventral annulus from rear. Setae h1 3 (2–3). Male genitalia 15 (14– 15) wide, proximal setae on coxisternum III (3a) 11 (10–11).

Types. Holotype, female, from Buxus sinica (Rehd. et Wils.) Cheng (Buxaceae) , Fuzhou City, Fujian Province, China, 26°06'04N, 119°17'09E, October 27, 2005, collected by Zi-Wei Song and Xiao-Feng Xue. Paratypes, 9 females and 4 males, with the same data as holotype.

Relation to host. Mites are vagrant on the undersurface of leaves, causing no apparent damage.

Etymology. The specific designation buxsinica is from the generic name of the host plant, Buxus and China.

Remarks. This species is similar to Epitrimerus armeniacae Kuang, Luo & Wang, 2005 , but can be differentiated by prodorsal shield with lines arranged irregularly (prodorsal shield with lines arranged regularly in E. armeniacae ); prosternal apodeme obvious (prosternal apodeme inconspicuous in E. armeniacae ); female coverflap with two cross lines at base (coverflap without cross lines in E. armeniacae ).

Figures

FIGURE 2. Epitrimerus buxsinica sp. nov. D, dorsal view of female mite; DM, dorsal view of male mite; LM, lateral view of female mite.

FIGURE 3. Epitrimerus buxsinica sp. nov. CGF, coxal-genital region of female; CGM, coxal-genital region of male; L 1, leg I; L 2, leg II; em, tarsal empodium.