Cosella chinensis, Huang, Kun-Wei & Wang, Chin-Fah, 2009

Huang, Kun-Wei & Wang, Chin-Fah, 2009, Eriophyoid mites (Acari: Eriophyoidea) of Taiwan: thirty-seven species from Yangmingshan, including one new genus and twenty-two new species, Zootaxa 1986, pp. 1-50 : 16-20

Cosella chinensis sp. nov. ( Fig. 8 )

Female: Body fusiform, 182 long, shield 40 long, 63 wide, shield lobe present; shield design with median line and admedian lines complete, subparallel, with 3 transverse lines at basal 1/3, half and basal 2/3, the basal 2/3 transverse line extending to lateral margins, submedian line absent; scapular tubercles set ahead of rear shield margin, scapular seta (sc) 9 long, directed to centrad and upward, Dt-Dt 23 apart. Legs: tibiae fused with tarsi; coxal area with granules; 1st coxal seta (1b) and tubercles absent, 2nd coxal seta (1a) 9 long, Ct2-Ct2 10 apart, 3rd coxal seta (2a) 12 long, Ct3-Ct3 25 apart, Ct2\Ct3 18, Ct2-Ct3 10; solenidion ending as knob; empodium simple, 3 rayed.

Opisthosoma: dorsum flattened, dorsal annuli with 62 rings, 1st 3 dorsal annuli 7 long; ventral annuli with 64 microtuberculate rings; lateral seta (c2) 21 long, Lt-Lt 53 apart, Lt\Vt1 56, Lt-Vt1 33; 1st ventral seta (d) 30 long, Vt1-Vt1 38 apart, Vt1\Vt2 45, Vt1-Vt2 36; 2nd ventral seta (e) 8 long, Vt2-Vt2 20 apart, Vt2\Vt3 47, Vt2-Vt3 42; 3rd ventral seta (f) 20 long, Vt3-Vt3 20 apart; accessory seta (h1) present.

Epigynium: 24 wide, 15 long, with granules at base, genital seta (3a) 7 long, Gt-Gt 18 apart.

Male: not seen.

Type data: Holotype Ψ, Taipei: Yangmingshan (650m; N25°10´E121°34´), 18-Aug.-1999, Huang & Wang; ex Symplocos chinensis (Lour.) Druce (Symplocaceae) . (deposited at NMNS). Paratypes, 4Ψ, data same as for holotype.

Relation to host: A vagrant on the lower leaf surface. No apparent damage was observed. Remarks: This new species is close to C. castanopiae Huang et Wang, 2003 by the shield design with transverse line extending to lateral margins. This new species differs from C. castanopiae by the following characters: the shield design with admedian lines parallel at base, accessory seta (h1) present, and the 3-rayed empodium.

Etymology: The specific designation is derived from the specific name of the type host plant.

Figures

FIGURE 8. Cosella chinensis sp. nov. (Ψ). A, Dorsal view; B, Legs and genital region, ventral view; C, Detail of some annuli in lateral view; D, Fore and hind legs. (scale A, B, C, D = 50 μm).