Phyllocoptes piceanis

Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2009, Seven new species of Phyllocoptes Nalepa from Tibet Autonomous Region, China (Acari: Eriophyidae: Phyllocoptinae), Zootaxa 2313, pp. 35-60 : 56-59

Phyllocoptes piceanis s p. nov.

( Figs 13 & 14 )

Description. FEMALE: (n = 13) Body fusiform, 223 (223–240), 63 (63–70) wide, 70 (67–70) thick; light yellow. Gnathosoma 22 (20–22), projecting obliquely down, pedipalp coxal seta (ep) 3 (3–4), dorsal pedipalp genual seta (d) 9 (9–10), cheliceral stylets 20 (18–20). Prodorsal shield 47 (46–49), 51 (51–54) wide; prodorsal shield with round frontal lobe; shield design with median line absent, admedian and submedian lines present, admedian and submedian lines connected and forming cells. Scapular tubercles ahead of shield rear margin, 21 (21–23) apart, scapular setae (sc) 15 (14–15) projecting centrad. Coxal plates with short lines and granules; anterolateral setae on coxisternum I (1b) 7 (7–10), 13 (13–14) apart, proximal setae on coxisternum I (1a) 14 (14–16), 10 (10–11) apart, proximal setae on coxisternum II (2a) 25 (25–30), 27 (27– 20) apart. Prosternal apodeme present. Legs with usual series of setae. Leg I 44 (42–44), femur 12 (11–12), basiventral femoral seta (bv) 13 (13–15); genu 6 (5–6), antaxial genual seta (l ʺ) 26 (26–30); tibia 8 (7–8), paraxial tibial seta (l ʹ) 8 (8–10), located 1/3 from dorsal base; tarsus 8 (7–8); seta ft ʹ 20 (19–21), seta ft ʺ 18 (17–20), paraxial unguinal tarsal seta (u ʹ) 4 (3–4); tarsal empodium 9 (8–9), simple, 7-rayed, tarsal solenidion rod-like. Leg II 40 (40–42), femur 12 (11–12), basiventral femoral seta (bv) 11 (11–13); genu 5 (4–5), antaxial genual seta (l ʺ) 11 (10–11); tibia 6 (5–6); tarsus 8 (7–8); seta ft ʹ 8 (7–8), seta ft ʺ 20 (18–21), paraxial unguinal tarsal seta (u ʹ) 4 (3–4); tarsal empodium 9 (8–9), simple, 7-rayed, tarsal solenidion rod-like. Opisthosoma dorsally with 58 (58–59) annuli, with tapered microtubercles, but 21 annuli from posterior with bigger tapered microtubercles; ventrally with 70 (70–73) annuli, with long tapered microtubercles. Setae c2 40 (40–42) on ventral annulus 10 (10–11); setae d 60 (60–62) on ventral annulus 23 (23–26), 42 (42–43) apart; setae e 43 (40–43) on ventral annulus 43 (43–45), 20 (19–20) apart; setae f 30 (28–30) on 6th ventral annulus from rear, 25 (25–27) apart. Setae h1 4 (3–4), setae h2 80 (78–83). Female genital coverflap 10 (8–10), 20 (20–21) wide, with 10 longitudinal ridges, setae 3a 40 (30–40), 17 (17–18) apart.

MALE: (n = 2) Body fusiform, 201–210, 60–65 wide; light yellow. Gnathosoma 20–21, projecting obliquely down, pedipalp coxal seta (ep) 3–4, dorsal pedipalp genual seta (d) 5–6, cheliceral stylets 16–17. Prodorsal shield 40–43, 50–51 wide; prodorsal shield with round frontal lobe. Scapular tubercles ahead of shield rear margin, 18–20 apart, scapular setae (sc) 12–15 projecting centrad. Coxal plates with short lines and granules; anterolateral setae on coxisternum I (1b) 5–7, 10–12 apart, proximal setae on coxisternum I (1a) 18–20, 9–10 apart, proximal setae on coxisternum II (2a) 28–30, 22–23 apart. Prosternal apodeme absent. Legs with usual series of setae. Leg I 38 –40, femur 10–11, basiventral femoral seta (bv) 10–11; genu 4–5, antaxial genual seta (l ʺ) 24–26; tibia 6–7, paraxial tibial seta (l ʹ) 8–10, located 1/2 from dorsal base; tarsus 6– 7; seta ft ʹ 18–20, seta ft ʺ 19–20, paraxial unguinal tarsal seta (u ʹ) 4–5; tarsal empodium 8–9, simple, 7-rayed, tarsal solenidion rod-like. Leg II 35 –37, femur 9–10, basiventral femoral seta (bv) 8–10; genu 4–5, antaxial genual seta (l ʺ) 10–12; tibia 4–5; tarsus 6–7; seta ft ʹ 7–8, seta ft ʺ 18–20, paraxial unguinal tarsal seta (u ʹ) 4–5; tarsal empodium 8–9, simple, 7-rayed, tarsal solenidion rod-like. Opisthosoma dorsally with 61–64 annuli, with tapered microtubercles; ventrally with 74–75 annuli, with long tapered microtubercles. Setae c 2 30–35 on ventral annulus 12–13; setae d 50–60 on ventral annulus 25–27, 30–33 apart; setae e 30–35 on ventral annulus 44–46, 16–17 apart; setae f 25–28 on 6th ventral annulus from rear, 22–24 apart. Setae h1 3–4, setae h2 75–81. Male genitalia 19–20 wide, setae 3a 18–20, 16–17 apart.

Type material. Holotype, female (slide marked NJAUAcariEri984 holotype), from Picea asperata Mast. (Pinaceae) , Lhasa City, Tibet Autonomous Region, P. R. China, 23 August, 2007, coll. Zi-Wei Song, Xiao- Feng Xue & Zhen Wang. Paratypes, 12 females and 2 males (slides marked NJAUAcariEri984) with the same data as holotype.

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

Etymology. The specific designation piceanis is from the host genus name “ Picea ”.

Differential diagnosis. This species is similar to P. c e c h i Boczek & Michalska, 1989, but can be differentiated by the dorsal and ventral annuli with tapered microtubercles (dorsal annuli smooth, ventral annuli with elliptical microtubercles in P. cechi ); coxal plates with short lines and granules (coxal plate I with indistinct curved lines, coxal plate II smooth in P. cechi ); prosternal apodeme present (hind coxae separated not forming sternum in P. cechi ).

Figures

FIGURE 13. Phyllocoptes piceanis sp. nov. D, dorsal view of female; em, empodium; CG, coxae and genitalia of female; LO, enlarged lateral view of opisthosoma

FIGURE 14. Phyllocoptes piceanis sp. nov. L, lateral view of female; CGM, coxae and genitalia of male; L 1, leg I; L 2, leg II