Velia tonkina Polhemus & Polhemus, 2003

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 tonkina Polhemus & Polhemus, 2003

Figs 2e, f , 3g, h , 5d , 6g, h , 7h , 8j-l , 9g, h

Material examined.

1 apterous ♂ 1 apterous ♀, China, Yunnan Province, Yuxi City, Gasa Town , Shimenxia Scenic area : 23.9688°N, 101.5127°E; 2013m a.s.l; 2016-VIII-01; Zhen Ye leg. (NKUM). 2 apterous ♀♀, China, Yunnan Province, Honghe Pingbian Miao Autonomous County, Dweishan National Reserve : 22.9701°N, 103.7082°E; 2011-IV-16; Zhen Ye leg. (NKUM) .

Diagnosis.

Body large, mainly dark brown. Connexiva with dark orange strips (Figs 2e, f , 3g, h ); connexival spines of female short, dorsocaudally directed, in some specimens strongly reduced (Fig. 3g, h ); abdominal segment VIII of male small and ventrally concaved (Fig. 6g, h ); proctiger of male simple, with broad rounded hind margin (Fig. 7d )

Comparative notes.

See comparative notes of V. sinensis and in Tran et al. (2009).

Habitats.

Some specimens of V. tonkina have been observed and collected in the shade of pools surface (Fig. 10b ).

Distribution.

China (Yunnan, first record for China), and Vietnam (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 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).