Velia sinensis Andersen, 1981

Jin, Zezhong, Fu, Siying & Ye, Zhen, 2023, Taxonomic notes of subgenus Velia (Cesavelia) Kocak & Kemal, 2010 (Hemiptera, Heteroptera, Veliidae) from China, with description of one new species, ZooKeys 1149, pp. 37-52 : 37

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 ).

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 ).

Figures

Figure 2. Habitus of females and males of Velia spp. in dorsal view (apterous form) a V. longiconnexiva, female b V. longiconnexiva, male c V. sinensis, female d V. sinensis, male e V. tonkina, female f V. tonkina, male. Scale bar: 2.0 mm.

Figure 3. Bodies of Velia spp. (apterous female) a V. bui sp. nov., dorsal view b V. bui sp. nov., lateral view c V. longiconnexiva, dorsal view d V. longiconnexiva, lateral view e V. sinensis, dorsal view f V. sinensis, lateral view g V. tonkina, dorsal view h V. tonkina, lateral view. Scale bar: 2.0 mm.

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.

Figure 8. Parameres of males a V. bui sp. nov., external view b V. bui sp. nov., perpendicular view c V. bui sp. nov., internal view d V. longiconnexiva, external view e V. longiconnexiva, perpendicular view f V. longiconnexiva, internal view g V. sinensis, external view h V. sinensis, perpendicular view i V. sinensis, internal view j V. tonkina, external view k V. tonkina, perpendicular view l V. tonkina, internal view. Scale bar: 0.2 mm.

Figure 9. Endosomal structures of Velia spp. (males) a V. bui sp. nov., dorsal view b V. bui sp. nov., lateral view c V. longiconnexiva, dorsal view d V. longiconnexiva, lateral view e V. sinensis, dorsal view f V. sinensis, lateral view g V. tonkina, dorsal view h V. tonkina, lateral view. Scale bar: 0.2 mm. (ds = dorsal sclerite, ls = lateral sclerite, svs = secondary ventral sclerite).

Figure 10. Photographs of habitats of Velia spp. a habitat of V. sinensis b habitat of V. tonkina c habitat of cryptic area on rock surfaces near the stream of V. sinensis.

Figure 11. Geographical distribution of subgenus Velia (Cesavelia).