Aculus jasmini, Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2009

Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2009, Six new species of Aculus Keifer from Tibet Autonomous Region, China (Acari: Eriophyoidea: Eriophyidae: Phyllocoptinae), Zootaxa 2305, pp. 1-23 : 7-10

Aculus jasmini sp. nov.

( Figs 3 & 4 )

Description. FEMALE: (n = 6) Body fusiform, 205 (190–208), 66 (65–70) wide, 70 (68–70) thick; light yellow. Gnathosoma 23 (23–25), projecting obliquely down, pedipalp coxal seta (ep) 3 (3–4), dorsal pedipalp genual seta (d) 7 (6–7), cheliceral stylets 20 (20–22). Prodorsal shield pentagonal, 45 (43–45), 63 (60–63) wide; prodorsal shield with lobe rounded; shield design with robust incomplete median, admedian and submedian lines; admedian and submedian lines sinuous at center, submedian lines connected by a transverse line at basal 2/3, forming a “n” shape, shield with lateral granules. Scapular tubercles on shield rear margin, 36 (35–36) apart, scapular setae (sc) 10 (9–10) projecting posteriorly. Coxal plates with short lines; anterolateral setae on coxisternum I (1b) 10 (7–10), 13 (12–13) apart, proximal setae on coxisternum I (1a) 20 (20–22), 10 (9–10) apart, proximal setae on coxisternum II (2a) 40 (38–40), 26 (25–26) apart. Prosternal apodeme present. Legs with usual series of setae. Leg I 43 (43–45), femur 12 (11–12), basiventral femoral seta (bv) 10 (7–10); genu 6 (5–6), antaxial genual seta (l ʺ) 20 (18–20); tibia 9 (8–9), paraxial tibial seta (l ʹ) 6 (5–6), located 1/3 from dorsal base; tarsus 8 (7–8); paraxial fastigial tarsal seta (ft ʹ) 20 (18–20), antaxial fastigial tarsal setae (ft ʺ) 22 (20–22), paraxial unguinal tarsal seta (u ʹ) 5 (4–5); tarsal empodium 6 (5–6), simple, 4-rayed, tarsal solenidion 8 (7–8), knobbed. Leg II 39 (37–39), femur 10 (10–11), basiventral femoral seta (bv) 8 (6–8); genu 5 (4–5), antaxial genual seta (l ʺ) 10 (8–10); tibia 5 (5–6); tarsus 7 (6–7); paraxial fastigial tarsal seta (ft ʹ) 10 (8–10), antaxial fastigial tarsal setae (ft ʺ) 20 (18–20), paraxial unguinal tarsal seta (u ʹ) 5 (4–5); tarsal empodium 6 (5–6), simple, 4-rayed, tarsal solenidion 8 (7–8), knobbed. Opisthosoma dorsally with 29 (26– 29) annuli, with elongated microtubercles on annular rear margins; ventrally with 65 (60–65) annuli, with round microtubercles. Setae c2 25 (23–25) on ventral annulus 10 (10–11); setae d 40 (40–43) on ventral annulus 23 (22–23), 30 (27–30) apart; setae e 20 (19–20) on ventral annulus 40 (37–40), 17 (16–17) apart; setae f 28 (28–30) on 5th ventral annulus from rear, 25 (24–25) apart. Setae h1 3 (3–4), setae h2 50 (48–52). Female genital coverflap 14 (13–15), 21 (21–23) wide, with 10 longitudinal ridges, setae 3a 15 (15–16), 17 (15–17) apart.

MALE: (n = 3) Body fusiform, 183 (165–185), 57 (57–60) wide, light yellow. Gnathosoma 23 (23–25), projecting downwards, pedipalp coxal seta (ep) 3 (2–3), dorsal pedipalp genual seta (d) 6 (6–7), cheliceral stylets 20 (20–22). Prodorsal shield pentagonal, 40 (39–41), 55 (54–55) wide; prodorsal shield with lobe rounded, shield with lateral granules. Scapular tubercles on shield rear margin, 31 (30–31) apart, scapular setae (sc) 10 (9–10) projecting posteriorly. Coxal plates with short lines; anterolateral setae on coxisternum I (1b) 7 (6–7), 11 (10–11) apart, proximal setae on coxisternum I (1a) 15 (15–17), 8 (7–8) apart, proximal setae on coxisternum II (2a) 20 (20–25), 22 (21–22) apart. Prosternal apodeme present. Legs with usual series of setae. Leg I 40 (37–40), femur 10 (9–10), basiventral femoral seta (bv) 8 (7–8); genu 5 (4–5), antaxial genual seta (l ʺ) 18 (16–18); tibia 7 (6–7), paraxial tibial seta (l ʹ) 4 (4–5), located 1/3 from dorsal base; tarsus 7 (6–7); paraxial fastigial tarsal seta (ft ʹ) 20 (18–20), antaxial fastigial tarsal setae (ft ʺ) 22 (20–22), paraxial unguinal tarsal seta (u ʹ) 4 (3–4); tarsal empodium 6 (5–6), simple, 4-rayed, tarsal solenidion 7 (6–7), knobbed. Leg II 35 (33–35), femur 9 (8–9), basiventral femoral seta (bv) 7 (6–7); genu 5 (4–5), antaxial genual seta (l ʺ) 6 (6– 7); tibia 5 (4–5); tarsus 7 (6–7); paraxial fastigial tarsal seta (ft ʹ) 10 (8–10), antaxial fastigial tarsal setae (ft ʺ) 20 (18–20), paraxial unguinal tarsal seta (u ʹ) 4 (3–4); tarsal empodium 5 (5–6), simple, 4-rayed, tarsal solenidion 7 (6–7), knobbed. Opisthosoma dorsally with 27 (26–27) annuli, with elliptical microtubercles; ventrally with 57 (57–58) annuli, with round microtubercles. Setae c2 22 (20–22) on ventral annulus 10 (9– 10); setae d 43 (40–43) on ventral annulus 21 (20–21), 25 (25–28) apart; setae e 16 (16–18) on ventral annulus 36 (36–37), 15 (15–16) apart; setae f 25 (23–25) on 5th ventral annulus from rear, 21 (20–22) apart. Setae h1 3 (3–4), setae h2 52 (49–55). Male genitalia 16 (15–16) wide, setae 3a 27 (26–27), 15 (15–16) apart.

Type material. Holotype, female (slide No. NJAUAcariEri938, marked holotype), from Jasminum humile L. ( Oleaceae ), Pai town, Nyingchi (Linzhi) Prefecture, Tibet Autonomous Region, P. R. China, 15 August, 2007, coll. Zi-Wei Song, Xiao-Feng Xue & Zhen Wang. Paratypes, 5 females and 3 males (slides No. NJAUAcariEri938) with the same data as holotype.

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

Etymology. The specific designation jasmini is from the host genus name “ Jasminum ”.

Differential diagnosis. This species is similar to A. jingbois Xue, Song & Hong, 2008 , but can be differentiated by the prodorsal shield with all lines incomplete, with lateral granules (prodorsal shield with only admedian lines, with numerous granules on shield in A. jingbois ); female genital coverflap with 10 longitudinal ridges and smooth at base (female genital coverflap with 8 longitudinal ridges and with granules at base in A. jingbois ).

Figures

FIGURE 3. Aculus jasmini sp. nov. D, dorsal view of female; CG, coxae and genitalia of female; L 1, leg I; L 2, leg II.

FIGURE 4. Aculus jasmini sp. nov. L, lateral view of female; em, empodium; CGM, coxae and genitalia of male; LO, enlarged lateral view of opisthosoma.