Amemboa cristata J. Polhemus & Andersen 1984

Amemboa cristata J. Polhemus & Andersen, 1984 Figs 2 E, 3 D, 6 E, 7 D, 8 D, 9 D, 10 D, 11 D, 12 E, 18 Material examined. 3 ♂♂, 4 ♀♀ (apterous), Thailand, Mae Hong Son Province, Pai, Thung Yao, Pam Bok Waterfall; 19 ° 19 ' 14.5 " N, 98 ° 24 ' 18.6 " E; 549 m a. s. l.; 26 Aug. 2018; Zhen Ye and Juan-juan Yuan leg. (NKUM). Diagnosis. Color pattern as shown in Figs 2 E, 3 D, 12 E. Males: profemur moderately incrassate (Fig. 6 E); ventral side of the profemur with one elongate crest of dark setae on apical 1 / 2 and an additional elongate crest of dark setae on basal 1 / 2 (Fig. 6 E); protibia slightly curved and with a tumescence on basal 1 / 3 (Fig. 6 E); abdominal segment VIII relatively long (Fig. 7 D); pygophore posteriorly with a bifid median process and a pair of strongly produced lateral processes in ventral view (Figs 8 D, 9 D); median process of pygophore relatively narrow in lateral view (Figs 10 D, 11 D); lateral arm of proctiger relatively curved and slender in ventral view (Fig. 8 D), without subapical process in lateral view (Fig. 10 D) Comparative notes. Amemboa cristata is most similar to A. incurvata; see comparative notes in Polhemus and Andersen (1984) Distribution. China: Yunnan (Zettel et al. 2007). Thailand; Vietnam; Peninsular Malaysia (Polhemus and Andersen 1984; Zettel and Chen 1996). Remarks. Zettel et al. (2007) first reported the distribution of A. cristata in Xi-shuang-ban-na, Yunnan. In this study, all the examined specimens and those used in the Figures are from Thailand.