Calacarus cinerascens, Li, De-Wei, Wang, Guo-Quan & Wei, Sui-Gai, 2009

Li, De-Wei, Wang, Guo-Quan & Wei, Sui-Gai, 2009, Three new species of Phyllocoptinae (Acari: Eriophyidae) from South China, Zootaxa 2205, pp. 62-68 : 63-64

Calacarus cinerascens sp. nov.

( Fig. 1 )

Description. Female: (n = 16) Body spindleform, light yellow, 213 (203−226), 86 (83−88) wide, 80 (78−82) thick. Gnathosoma 32 (31−33), projecting obliquely down. Prodorsal shield with frontal lobe, shield lobe emarginated anteriorly; 51 (49−52), 77 (75−79) wide; anterior shield with a short transverse line; median line incomplete; admedian lines complete, concave at center and connected at base and anteriorly; submedian lines incomplete, undulated, with short filaments, connected with admedian lines at 1/5 on rear shield; shield with 4 cells at each lateral side, all lines with wax cover. Scapular tubercles minute, set ahead of rear shield margin, 35 (34−36) apart, scapular setae absent. Coxae with a sternal line, coxal area with short lines, anterolateral setae on coxisternum І (1b) 7 (6−8), proximal setae on coxisternum І (1a) 10 (9−11), proximal setae on coxisternum І (2a) 23 (20−25). Cox-genital annuli 8. Leg segments normal. Leg І 36 (35−36), femur 12 (12−13), basiventral femoral setae (bv) 16 (15−17); genu 4 (4−5), antaxial genual setae (l'') 31 (28−35); tibia 7 (6−7), paraxial tibial setae (l ʹ) 4 (3−4), located at center; tarsus 8 (7−8); tarsal empodium simple, 5-rayed, 5 (4−5) long, tarsal solenidion knobbed, 6 (6−7) long. Leg ІI 35 (34−35), femur 12 (12−13), basiventral femoral setae (bv) 8 (7−8); genu 4 (4−5), antaxial genual setae (l'') absent; tibia 7 (6−7), tarsus 7 (6−7); tarsal empodium simple, 5-rayed, 5 (4−5) long, tarsal solenidion knobbed, 6 (6−7) long. Opisthosoma: Dorsum with five longitudinal ridges produce white wax stripes; dorsal opisthosoma with 67 (65−69) annuli, smooth; ventrally with 76 (75−78) annuli, with round microtubercles; setae c2 22 (20−24), on ventral annulus 16 (15−17); setae d 42 (40−45), on ventral annulus 34 (32−35); setae e 26 (24−27), on ventral annulus 59 (58−60); setae f 23 (22−25), on 7th ventral annulus from rear; setae h1 absent. Female genitalia 23 (22−24), 31 (30−32) wide, coverflap with some granules at base and 20(20−22) longitudinal ridges at distal; proximal setae on coxisternum ІІ (3a) 15 (14−16).

Male: Not seen.

Type data: Holotype, female, Jinzhong MT., 37 km SW of Longlin County (24°8´N, 105°34´E), Guangxi Zhuang Autonomous Region, China, 1 December 2004, from Cipadessa cinerascens (Pellegr.) Hand. -Mazz. ( Meliaceae ), coll. De-wei Li, Sui-gai Wei and Guo-quan Wang. Paratypes, 15 females, with the same data as holotype.

Relation to host: The mites are vagrant on the undersurfaces of the leaves, no visible damage.

Etymology: The species name is derived from the name of the host plant.

Note: This species is similar to Calacarus pelargonii Keifer, 1974 , but can be differentiated by prodorsal shield admedian lines form a burning-candle-like design; female coverflap with granules at base and tarsal empodium 5-rayed.

Figures

FIGURE 1. Calacarus cinerascens sp. nov. (female). AL, antero-lateral view of mite; CGF, coxigenital area; D, dorsal view of mite; E, empodium (enlarged); L 1, leg I. (scale AL, D = 50 μm; CGF = 26 μm; L 1 = 22 μm).