Hylomesa taiwana Tsuneki, 1986

(Figs 25–31)

Hylomesa taiwana Tsuneki, 1986, Spec. Publ. Japa. Hymen. Assoc. 33: 73–77, holotype, ♀, paratypes, ♀, ♂, “Pempuchi, Nantou Prof.”.

Material examined. 1♀, China, Hainan Province, Changjing County, Shilu Town, Baomeiling Nature Reserve (Malaise trap), 19°10′19.1″N, 109°38′6″E, 738 m, 3.VIII.2021 – 5.IX.2021, Heshen Wang (CNU); 1♂, China, Zhejiang Province, Hangzhou City, Linan District, Qingliangfeng Town, Shunxi village, 30°2′4.8″N, 118°55′50.7″E, 551 m, 1.VIII.2012, Xiaoling Ji (YNAU).

Diagnosis. Female (Fig. 25). Length of head (Fig. 28) subequal (1.03) to width in dorsal view; basal half of clypeus with middle carina; lower half of frons with moderate punctures and upper half mostly impunctate; vertex (Fig. 28) with a few sparse punctures; OOD 1.48× POD and 0.42× OCD (Fig. 28); pronotum (Fig. 29) with weakly anterior carina and medially lacking, anterior half of dorsum densely punctate and posterior half sparsely punctate; lateral side of pronotum ventrally densely striate; near lateral and posterior margin of propodeum (Fig. 31) with dense punctures, medially with a comparatively narrow longitudinal groove and base of groove almost as wide as apex, surrounding area of the groove largely impunctate, dorsum without bordering carina between horizontal and posterior surfaces; ventral margin of hind femur medially with obtuse and short prominence; T1 (Fig. 33) with anteriorly transverse carina, behind the carina with a row of dense punctures; T6 (Fig. 35) with sparse punctures and apically impunctate and coriaceous.

Male (Fig. 26). Medio-apical margin of clypeus triangularly emarginated; clypeus with a strongly middle carina; frons wholly with dense punctures; vertex with sparser and smaller punctures than those on frons; pronotal transverse carina strongly present; anteriorly two-thirds of pronotum (Fig. 30) transversely strongly striate and even carinate, and posterior one-third with a few sparse punctures; dorsum of propodeum (Fig. 32) with medially irregularly reticulate carinae forming an closed area; lateral surface of propodeum anteriorly with striae extending metapleuron, rest of the surface strongly and coarsely reticulo-punctate; T1 (Fig. 34) anteriorly with transverse carina; S1 medially strongly carinate; dorsal surface of hind coxa longitudinally, acutely carinated; T7 with sparse punctures, length of S7 0.4× length of the T7 (Fig. 36) in lateral view.

Distribution. China (Zhejiang, Hainan, Taiwan).