Rhinotergum shaoguanense, Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2009

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2009, One new genus and five new species of Rhyncaphytoptinae from China (Acari: Eriophyoidea: Diptilomiopidae), Zootaxa 1992, pp. 1-19 : 12

Rhinotergum shaoguanense sp. nov.

( Figs 7 & 8 )

Description. FEMALE: (n = 9) Body fusiform, 233 (190–250), 83 (80–85) wide, 82 (80–83) thick; light yellow. Gnathosoma 55 (53–57), projecting down, pedipalp coxal seta (ep) 3 (3–4), dorsal pedipalp genual seta (d) 7 (6–7), cheliceral stylets 52 (52–53). Prodorsal shield subtriangular, 49 (47–52), 78 (75–80) wide; anterior shield lobe broad; median line absent, admedian lines forked at center, one short inner branch extend from basal 1/3 to center, the other outer branch extend near basal to center, admedian lines short. Scapular tubercles on rear margin, 48 (45–50) apart, scapular setae (sc) 14 (12–16) projecting forward. Coxal plates smooth; anterolateral setae on coxisternum І (1b) 6 (5–8), 12 (11–12) apart, proximal setae on coxisternum І (1a) 35 (32–38), 11 (11–12) apart, proximal setae on coxisternum І (2a) 42 (40–45), 34 (33–34) apart. Prosternal apodeme 9 (8–9). Legs with usual series of setae. Leg І 40 (38–43), femur 12 (11–13), basiventral femoral seta (bv) 18 (16–19); genu 7 (6–7), antaxial genual seta (l'') 27 (27–28); tibia 10 (9–10), paraxial tibial seta (l') 5 (4–6), located 1/3 from proximal tibial margin; tarsus 9 (8–9); tarsal empodium simple, 5-rayed, tarsal solenidion knobbed. Leg І 35 (32–36), femur 10 (9–10), basiventral femoral seta (bv) 14 (12–16); genu 5 (5–6), antaxial genual seta (l'') 6 (5–7); tibia 8 (7–8); tarsus 8 (7–8); tarsal empodium simple, 5-rayed, tarsal solenidion knobbed. Opisthosoma: opisthosoma dorsally with 25 (25–26) annuli, evenly curved, with elliptical microtubercles projecting posteriad from the rear annular margin, many fissures on rear annular margin, ventrally with 26 (26–27) annuli, smooth. Setae c2 13 (12–14) on ventral annulus 4 (4–5), 65 (64–65) apart; setae d 13 (11–15) on ventral annulus 9 (9–10), 36 (35–36) apart; setae e 13 (12–13) on ventral annulus 13 (12–13), 18 (17–18) apart, setae f 38 (32–40) on 6th ventral annulus from rear, 22 (22–23) apart. Setae h1 2 (2–3). Female genitalia 27 (26–28), 35 (35–36) wide, coverflap smooth, setae 3a 12 (11–12), 23 (22–23) apart.

MALE: Unknown.

Type material. Holotype, female, from Ulmus sp. ( Ulmaceae ), Shaoguan City, Guangdong Province, P.R. China, 16 September 2004, coll. Xiao-Feng Xue. Paratypes, 8 females with the same data as holotype.

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

Etymology. The specific designation shaoguanense is from the name of the location, Shaoguan City, where the new species was collected.

Differential diagnosis. This species is similar to R. ulmi Kuang, 1998 , but can be differentiated from the latter by ventral annuli smooth (ventral annuli with microtubercles in R. ulmi ), setae h1 present (setae h1 absent in R. ulmi ).

Figures

FIGURE 7. Rhinotergum shaoguanense sp. nov. D, dorsal view of female; CG, female coxae and genitalia; em, empodium; L 1, leg І; L 2, leg І.

FIGURE 8. Rhinotergum shaoguanense sp. nov. L, lateral view of female; LO, enlarged view of annuli in lateral view.