Eight new species of Strongylophthalmyia Heller from Vietnam with a key to species from Vietnam and neighbouring countries (Diptera, Strongylophthalmyiidae)

Seventeen species of Strongylophthalmyia are recognized in the fauna of Vietnam, including eight new species: Strongylophthalmyia annulipes sp. n., Strongylophthalmyia basisterna sp. n., Strongylophthalmyia dichroa sp. n., Strongylophthalmyia gavryushini sp. n., Strongylophthalmyia obtecta sp. n., Strongylophthalmyia orchidanthae sp. n., Strongylophthalmyia stricta sp. n., Strongylophthalmyia tomentosa sp. n. Strongylophthalmyia angusticollis Frey, Strongylophthalmyia fascipennis Frey, Strongylophthalmyia metatarsata Meijere, Strongylophthalmyia splendida Yang & Wang, and Strongylophthalmyia thaii Papp are recorded for the first time from Vietnam. The male of Strongylophthalmyia splendida and female of Strongylophthalmyia thaii are described for the first time. A key to 34 species of Strongylophthalmyia of the fauna of Vietnam and continental southeast Asia, including the Oriental southern region of China is provided.