Four new species of Rhyncaphytoptus from Tibet Autonomous Region, China (Acari: Eriophyoidea: Diptilomiopidae) Author Song, Zi-Wei Author Xue, Xiao-Feng Author Hong, Xiao-Yue text Zootaxa 2009 2196 31 47 journal article 10.5281/zenodo.189504 628a07e9-e7f9-4257-a600-8add52708f61 1175-5326 189504 Rhyncaphytoptus buxifoliae sp. nov. ( Figs 7 & 8 ) Description. FEMALE: (n = 8) Body fusiform, 288 (240–290), 71 (68–72) wide, 70 (69–72) thick; light yellow. Gnathosoma 70 (70–73), projecting downwards, pedipalp coxal seta ( ep ) 5 (4–5), dorsal pedipalp genual seta ( d ) 8 (7–8), cheliceral stylets 66 (66–70). Prodorsal shield sub-trapeziform, 31 (31–32), 57 (55– 60) wide; prodorsal shield with lobe anteriorly slightly emarginate; shield design with incomplete median line on posterior 1/2, complete admedian and submedian lines. Scapular tubercles 10 (5–13), ahead of rear shield margin, 29 (28–29) apart, scapular setae ( sc ) 30 (30–32) projecting forward. Coxal plates smooth; anterolateral setae on coxisternum I ( 1b ) 18 (18–20), 9 (9–10) apart, proximal setae on coxisternum I ( 1a ) 30 (30–32), 9 (9–10) apart, proximal setae on coxisternum II ( 2a ) 35 (30–40), 25 (25–26) apart. Prosternal apodeme present. Legs with usual series of setae. Leg I 47 (45–48), femur 14 (13–14), basiventral femoral seta ( bv ) 10 (10–12); genu 6 (5–6), antaxial genual seta ( l ʺ) 25 (24–25); tibia 10 (9–10), paraxial tibial seta ( l ʹ) 10 (9–10), located in proximal 1/3; tarsus 8 (7–8); paraxial unguinal tarsal seta ( u ʹ) 6 (5–6); tarsal empodium 8 (7–8), simple, 9-rayed, tarsal solenidion rod-like. Leg II 43 (41–43), femur 14 (13–14), basiventral femoral seta ( bv ) 11 (11–12); genu 6 (5–6), antaxial genual seta ( l ʺ) 11 (10–13); tibia 6 (6–7); tarsus 7 (7–8); paraxial unguinal tarsal seta ( u ʹ) 6 (5–6); tarsal empodium 8 (7–8), simple, 9-rayed, tarsal solenidion rod-like. Opisthosoma: opisthosoma dorsally with 39 (34–40) annuli, smooth except rear 7 annuli with microtubercles; ventrally with 66 (66–76) annuli, with round microtubercles. Setae c2 20 (15–20) on ventral annulus 13 (13–15); setae d 45 (40–45) on ventral annulus 27 (27–34), 26 (26–28) apart; setae e 25 (22–25) on ventral annulus 41 (41–44), 13 (12–13) apart; setae f 25 (22–25) on 7th ventral annulus from rear, 19 (19–20) apart. Setae h1 5 (4–5). Female genitalia 13 (12–13), 28 (25–28) wide, coverflap smooth, setae 3a 14 (14– 16), 16 (15–16) apart. MALE: (n = 1) Body fusiform, 248, 63 wide, light yellow. Gnathosoma 70, projecting downwards, pedipalp coxal seta ( ep ) 4, dorsal pedipalp genual seta ( d ) 10, cheliceral stylets 67. Prodorsal shield 29, 50 wide, smooth. Scapular tubercles ahead of rear shield margin, 23 apart, scapular setae ( sc ) 30 projecting forward. Coxal plates smooth; anterolateral setae on coxisternum I ( 1b ) 15, 7 apart, proximal setae on coxisternum I ( 1a ) 30, 6 apart, proximal setae on coxisternum II ( 2a ) 45, 22 apart. Prosternal apodeme present. Legs with usual series of setae. Leg I 44 , femur 13, basiventral femoral seta ( bv ) 10; genu 5, antaxial genual seta ( l ʺ) 23; tibia 9, paraxial tibial seta ( l ʹ) 9, located in proximal 1/3; tarsus 7; paraxial unguinal tarsal seta ( u ʹ) 5; tarsal empodium 7, simple, 9-rayed, tarsal solenidion rod-like. Leg II 40 , femur 13, basiventral femoral seta ( bv ) 11; genu 5, antaxial genual seta ( l ʺ) 12; tibia 6; tarsus 7; paraxial unguinal tarsal seta ( u ʹ) 5; tarsal empodium 7, simple, 9-rayed, tarsal solenidion rod-like. Opisthosoma: opisthosoma dorsally with 36 annuli, smooth; ventrally with 71 microtubercular annuli. Setae c2 23 on ventral annulus 15; setae d 45 on ventral annulus 28, 33 apart; setae e 25 on ventral annulus 40, 19 apart; setae f 27 on 7th ventral annulus from rear, 21 apart. Setae h1 5. Male genitalia 20 wide, setae 3a 13, 17 apart. Type material. Holotype , female (slide marked 967/970A holotype ), from Cotoneaster buxifolius Lindl. (Rosaceae) , Pai town, Linzhi District, Tibet Autonomous Region, P. R. China , 18 August , 2007, coll. Zi-Wei Song, Xiao-Feng Xue & Zhen Wang. Paratypes , 7 females and 1 male (slides no. 967/970A) with the same data as holotype . Relation to host. Vagrant on leaf undersurface. No damage to the host was observed. FIGURE 7. Rhyncaphytoptus buxifoliae sp. nov. D, dorsal view of female; CG, coxae and genitalia of female; L1, leg I; L2, leg II. FIGURE 8. Rhyncaphytoptus buxifoliae sp. nov. L, lateral view of female; em, empodium; CGM, coxae and genitalia of male; LO, enlarged lateral view of opisthosoma. Etymology. The specific designation buxifoliae is from the species name of host plant “ buxifolius ”. Differential diagnosis. This species is similar to R . betulae Kuang & Hong, 1990 , but can be differentiated from the latter by the prodorsal shield with incomplete median line (prodorsal shield with median line absent in R . betulae ); dorsal rear 7 annuli with microtubercles (dorsal annuli smooth in R . betulae ); setae f on 7th ventral annulus from rear (setae f on 5th ventral annulus from rear in R . betulae ); tarsal solenidion rod-like, empodium 9-rayed (tarsal solenidion knobbed, empodium 5-rayed in R . betulae ).