Sinella affluens Chen & Christiansen, 1993

Fig. 3, Table 1

Type locality. China, Anhui, Yellow Mountain.

Material examined. Holotype and 2 paratypes; 1 male and 1 female on slides and 5 in alcohol, China: Anhui: Liuan, the entrance of Tiantangzhai scenic region, 31.194°N, 115.791°E, alt. 538 m, 2.viii.2012, ZX Pan leg. (# S4369); female on slide and 2 in alcohol, China, Anhui, Shitai, Guniujiang, the entrance of Yan hamlet, 30.092°N, 117.482°E, alt. 208 m, 15.viii.2011, F Zhang, DY Yu and YH Ren leg. (# C9676); female on slide, China, Nanjing, Qingliangshan Park, 32.047°N, 118.760°E, alt. 42 m, in litter of forest floor, 5.vii.2012, DY Yu, Z Chen and RR Dong leg. (# C9690); female on slide and numerous in alcohol, China, Nanjing, Qixia Mountain, the entrance of Hongye valley, 32.160°N, 118.960°E, alt. 147 m, 7.xii.2014, in litter, DY Yu leg. (# 14QX4).

Additions to original description. Seven ciliate clypeal chaetae same as S. abietis sp. nov. (Fig. 14). Chaetae along cephalic groove 6–7, anterior two or three smooth. S-chaetotaxic formula 2, 2/1, 2, 2, –, 3 sens, 1, 0/1, 0, 0 ms.

Distribution. Anhui, Jiangsu.

Remarks. S. affluens is widely distributed in East China. It is unique in having 4+4 central mac on Abd. IV, and distinctly differs from another 1+1 eyed species, S. uniseta sp. nov., in having the arrangement of central mac on Abd. IV and post-labial chaeta X and X4 (smooth and tiny in S. affluens and ciliate in S. uniseta sp. nov., Table 1).