Taxonomic notes of subgenus Velia (Cesavelia) Kocak & Kemal, 2010 (Hemiptera, Heteroptera, Veliidae) from China, with description of one new species Author Jin, Zezhong https://orcid.org/0000-0001-7223-770X Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China Author Fu, Siying https://orcid.org/0000-0001-7010-4401 Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China Author Ye, Zhen https://orcid.org/0000-0003-2327-1869 Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, 300071, China yezhen1987331@nankai.edu.cn text ZooKeys 2023 2023-02-22 1149 37 52 http://dx.doi.org/10.3897/zookeys.1149.96680 journal article http://dx.doi.org/10.3897/zookeys.1149.96680 1313-2970-1149-37 12B248C0791B4DDDB2E348AA2F531213 2DDF43F088985A2FB49CBDBF5F507E06 Velia sinensis Andersen, 1981 Figs 2c, d , 3e, f , 4a-l , 5c , 6e, f , 7c, g , 8g-i , 9e, f Material examined. 2 apterous ♂♂ 2 apterous ♀♀ , China , Sichuan Province , Emei Mountain , Jiu Lao Dong Scenic area : 1800-1900 m a.s.l. ; 1957-VII-22 ; Keren Huang leg. (NKUM). 5 apterous ♀♀ , China , Sichuan Province , Meishan City , Hongya County , Yanv Lake : 29.6335°N , 103.0858°E ; 2013-VII-25 ; Xin Yu & Xubo Jiang leg. (NKUM). 1 apterous ♂ 7 apterous ♀♀ , CHINA , Sichuan Province , Mianyang City , Qianfoshan National Nature Reserve : 29.8880°N , 103.0336°E ; 2400 m a.s.l. ; 2015-VII-17 ; Zhen Ye & Chenguang Zheng leg. (NKUM). 1 apterous ♂ 4 apterous ♀♀ , China , Sichuan Province , Dujiangyan City , Taian Town , Qingchenghoushan Scenic area : 30.9189°N , 103.4778°E ; 918 m a.s.l. ; 2014-VII-14 ; Zhen Ye , Yahui Zhen & Chenguang Zheng leg. (NKUM). 1 apterous ♂ 6 apterous ♀♀ , China , Sichuan Province , Ebian County , XinchangTown , Yangziyan Village : 29.2478°N , 103.2631°E ; 1022 m a.s.l. ; 2017-VII-27 ; Chenguang Zheng leg. (NKUM). Diagnosis. Body large, mainly dark brown to black, commonly dull (Figs 2c, d , 3e, f , 4a-l ), but some individuals with conspicuous orange strips along connexiva (Fig. 4k, l ); abdominal segment VIII of male small and slightly concaved ventrally (Fig. 6e, f ); proctiger of male simple, with rounded hind margin (Fig. 7c ). Figure 4. Abdomen of V. sinensis (females) from Qianfoshan National Nature Reserve, Mianyang City, Sichuan Province, China a connexiva strongly convergent type I, dorsal view b connexiva strongly convergent type I, lateral view c connexiva strongly convergent type II, dorsal view d connexiva strongly convergent type II, lateral view e connexiva moderately convergent type I, dorsal view f connexiva moderately convergent type I, lateral view g connexiva moderately convergent type II, dorsal view h connexiva moderately convergent type II, lateral view i connexiva slightly convergent type I, dorsal view j connexiva slightly convergent type I, lateral view k connexiva slightly convergent type II, dorsal view l connexiva slightly convergent type II, lateral view. Scale bar: 2.0 mm. Figure 5. Metafemora of males, showing patterns of spines a V. bui sp. nov. b V. longiconnexiva c V. sinensis d V. tonkina . Scale bar: 1.0 mm. Figure 6. Abdominal segments VIII of males a V. bui sp. nov., ventral view b V. bui sp. nov., lateral view c V. longiconnexiva , ventral view d V. longiconnexiva , lateral view e V. sinensis , ventral view f V. sinensis , lateral view g V. tonkina , ventral view h V. tonkina , lateral view. Scale bar: 1.0 mm. Figure 7. Proctigers of Velia spp. a V. bui sp. nov., male b V. longiconnexiva , male c V. sinensis , male d V. tonkina , male e V. bui sp. nov., female f V. longiconnexiva , female g V. sinensis , female h V. tonkina , female. Scale bar: 0.5 mm. Comparative notes. The comparison between V. sinensis and V. tonkina has been elucidated by Polhemus and Polhemus (2003) and Tran et al. (2009) . In addition, V. sinensis can be distinguished from V. tonkina by having the basal ends of the lateral sclerites in the endosoma slightly curved laterally (Fig. 9e ). In contrast, V. tonkina has the basal ends of the lateral sclerites in the endosoma slightly curved inward (Fig. 9g ). Habitats. Some specimens of V. sinensis have been observed and collected in the shaded water surface and rock surface near streams (Fig. 10a, c ). Distribution. China (Sichuan) (Fig. 11 ).