The black flies (Diptera: Simuliidae) of Vietnam Author Takaoka, Hiroyuki Author Sofian-Azirun, Mohd Author Ya’Cob, Zubaidah Author Chen, Chee Dhang Author Lau, Koon Weng Author Low, Van Lun Author Pham, Xuan Da Author Adler, Peter H. text Zootaxa 2017 4261 1 1 165 journal article 33106 10.5281/zenodo.571608 06d40acc-4fc2-4de6-9aab-96f3776ef44c 1175-5326 571608 C097C43E-D522-46C4-9D64-76D3CD4BAD86 Simulium ( Simulium ) xuandei Takaoka & Pham, 2015 Simulium ( Simulium ) xuandei Takaoka & Pham (in Takaoka et al ., 2015a ) : 86–93 (Female, male, pupa and larva). Specimens examined. Three females and two males (all reared from pupae), collected from a stream (width 1.5– 4.0 m, depth 10–20 cm , bottom of pebbles and rocks, water temperature 18.0˚C, exposed to the sun, elevation 107 m , 19˚30’10.540”N/105˚09’17.144”E), moderately flowing near a natural forest, Chau Dinh , Quy Chau , Nghe An Province , northern Vietnam , 11-XII-2015 , by H. Takaoka , M. Sofian-Azirun , C.D. Chen & K.W. Lau. Distribution. Vietnam ( Lam Dong and Nghe An ) Remarks . This species was described from Lam Dong Province , southern Vietnam ( Takaoka et al . 2015a ), and also recorded from Nghe An Province , northern Vietnam by our surveys. The molecular data show that this species includes two additional cryptic taxa (Low et al. 2016).