Vietnagone rugulosa (Song & Li, 2010), new combination

Gongylidium rugulosum Song & Li, 2010: 707, figs.18–39, male and female.

Remarks. Vietnagone rugulosa (Song & Li, 2010), new combination was originally described in Gongylidium Menge, 1868, from Bome and Nyingchi counties of Tibet (Song & Li, 2010). The structure of the palp, namely, the modified palpal tibia, the presence of a convector (in the original description referred to as “lamella”), the relatively short and looped embolus, as well as the same chaeto- and trichobothriotaxy, all support the assignment of Gongylidium rugulosum Song & Li, 2010 to Vietnagone, new genus . This species is similar to V. silvatica, new species, but differs by the shape of the palpal tibia in the male (Figs. 7–9 cf. Figs. 19 –21 in Song & Li, 2010), as well as by the non-projecting epigyne, the much longer copulatory ducts and their arrangement (Figs. 12, 13 cf. Figs. 50–54, 56 in Song & Li, 2010).

Distribution. Known from southeastern Tibet (Song & Li, 2010).