Acaphyllisa quinqueridges, XUE, XIAO-FENG, WANG, ZHEN, SONG, ZI-WEI & HONG, XIAO-YUE, 2009

XUE, XIAO-FENG, WANG, ZHEN, SONG, ZI-WEI & HONG, XIAO-YUE, 2009, Eriophyoid mites on Fagaceae with descriptions of seven new genera and eleven new species (Acari: Eriophyoidea), Zootaxa 2253 (1), pp. 1-95 : 32-33

Acaphyllisa quinqueridges sp. nov.

(Figs 5 & 6)

Description. FEMALE: (n = 3) Body fusiform, 140 (115–151), 55 (55–56) wide, 48 (46–49) thick; light yellow. Gnathosoma 13 (13–14), projecting obliquely down, pedipalp coxal seta (ep) 3 (3–4), dorsal pedipalp genual seta (d) 7 (7–8), cheliceral stylets 13 (12–13). Prodorsal shield 47 (46–48), 50 (48–52) wide; anterior shield lobe broad; median line absent, admedian and submedian lines robust, admedian and submedian lines form two large cells, admedian lines merging at the base, many short lines present on prodorsal shield. Scapular tubercles ahead of rear shield margin, 15 (14–15) apart, scapular setae (sc) 4 (4–5), projecting centrad. Coxal plates with granules, anterolateral setae on coxisternum І (1b) 7 (6–7), 11 (12–13) apart, proximal setae on coxisternum І (1a) 10 (9–12), 7 (6–7) apart, proximal setae on coxisternum І (2a) 19 (17– 21), 22 (22–23) apart. Prosternal apodeme 6 (6–6). Legs with usual series of setae. Leg І 30 (28–32), femur 9 (8–9), basiventral femoral seta (bv) 7 (7–8); genu 4 (4–5), antaxial genual seta (l'') 15 (13–16); tibia 7 (7–8), paraxial tibial seta (l') 3 (3–4), located at 1/3 from proximal tibial margin; tarsus 5 (4–5), seta ft' 15 (15–16), seta ft'' 17 (16–17), seta u' 3 (3–4); tarsal empodium (em) 5 (5–6), divided, 2-rayed at each side, tarsal u' 3 (3–4); tarsal empodium (em) 4 (4–5), divided, 2-rayed at each side, tarsal solenidion (ω) 5 (5–6), rod-like. Opisthosoma: opisthosoma dorsally with 39 (38–41) annuli, with five ridges, middorsal ridge ends in a wide furrow, subdorsal and lateral ridges short, ridges with elliptical microtubercles, ventrally with 58 (55–61) annuli, with round microtubercles. Setae c2 14 (13–15) on ventral annulus 8 (7–8), 50 (50–51) apart; setae d 26 (22–30) on ventral annulus 20 (20–21), 25 (24–25) apart; setae e 9 (9–10) on ventral annulus 34 (33–34), 10 (10–11) apart, setae f 14 (14–16) on 6th ventral annulus from rear, 19 (18–19) apart. Setae h1 2 (2–3), h2 23 (23–31). Female genitalia 13 (13–14), 21 (20–21) wide, coverflap with 10 longitudinal ridges, setae 3a 18 (15–20), 13 (12–13) apart.

MALE: (n = 5) Body fusiform, 125–135, 47–48 wide, 34–36 thick; light yellow. Gnathosoma 13–14, projecting obliquely down, pedipalp coxal seta (ep) 2–3, dorsal pedipalp genual seta (d) 5–6, cheliceral stylets 10–11. Prodorsal shield 42–43, 50–52 wide; anterior shield lobe broad. Scapular tubercles ahead of rear shield margin, 14–15 apart, scapular setae (sc) 5–6, projecting centrad. Coxal plates with granules; anterolateral setae on coxisternum І (1b) 6–7, 10–11 apart, proximal setae on coxisternum І (1a) 9–12, 6–7 apart, proximal setae on coxisternum І (2a) 17–21, 17–18 apart. Prosternal apodeme 5–6. Legs with usual series of setae. Leg І 27–29, femur 7–8, basiventral femoral seta (bv) 5–6; genu 4–5, antaxial genual seta (l'') 17–18; tibia 6–7, paraxial tibial seta (l') 2–3, located at 1/3 from proximal tibial margin; tarsus 5–6, seta ft' 12– 13, seta ft'' 15–16, seta u' 2–3; tarsal empodium (em) 4–5, divided, 2-rayed at each side, tarsal solenidion (ω) 4–5, rod-like. Leg І 22–24, femur 6–7, basiventral femoral seta (bv) 5–6; genu 3–4, antaxial genual seta (l'') 5–6; tibia 5–6; tarsus 4–5, seta ft' 3–4, seta ft'' 10–11, seta u' 3–4; tarsal empodium (em) 3–4, divided, 2-rayed at each side, tarsal solenidion (ω) 3–4, rod-like. Opisthosoma: opisthosoma dorsally with 32–36 annuli, ventrally with 55–56 annuli, with round microtubercles. Setae c2 15–16 on ventral annulus 7–8, 45–46 apart; setae d 25–26 on ventral annulus 20–21, 21–22 apart; setae e 10–11 on ventral annulus 34–35, 9–10 apart, setae f 11–12 on 6th ventral annulus from rear, 16–17 apart. Setae h1 2–3, h2 33–35. Male genitalia 13–15 wide, setae 3a 10–15, 10–11 apart.

Type material. Holotype, female (slide number NJAUAcariEri283, marked Holotype), from Cyclobalanopsis glauca (Fagaceae) , The Foping National Natural Reserve, Foping County, Shaanxi Province, P. R. China, 33°30'48" N, 107°58'52" E, elevation 766m, 5 September 2004, coll. Xiao-Feng Xue and Zi-Wei Song. Paratypes, 2 females and 5 males (slide number NJAUAcariEri283), with the same data as holotype.

Additional material examined. 2 females (slide number NJAUAcariEriH5), from Quercus sp. (Fagaceae) , Jiagedaqi City, Heilongjiang Province, P. R. China, 50°24'27" N, 124°06'43" E, elevation 365m, 17 July 2008, coll. Xiao-Feng Xue, Zi-Wei Song and Zhen Wang, occurred together with Brevulacus reticulatus Manson, 1984 and Acaphyllisa quinqueridges sp. nov.; 1 female (slide number NJAUAcariEriS35), from Cyclobalanopsis glauca (Fagaceae) , The Huaguoshan Mountain, Lianyungang City, Jiangsu Province, P. R. China, 34°38'54" N, 119°17'18" E, elevation 413m, 17 September 2008, coll. Zhen Wang and Zi-Wei Song.

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

Etymology. The specific designation quinqueridges is combined from quinque (Latin, means five) and ridges, referring to the five ridges on the dorsal opisthosoma.

Differential diagnosis. This species is similar to A. populi Xue & Hong, 2006 , but can be differentiated from the latter by the prodorsal shield with robust admedian and submedian lines (prodorsal shield with faint admedian and submedian lines in A. populi ) and dorsal annuli with five ridges (dorsal annuli with three ridges in A. populi ).