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 ) nodosum Puri, 1933 Simulium ( Simulium ) nodosum Puri. 1933b : 813 –817 (Female, pupa and larva); Lewis, 1974 : 34 –37 (Female, male, pupa and larva). Specimens examined. Two males (reared from pupae) and five mature larvae, collected from a slow-flowing stream (width 1.5–3.0 m, depth 10–15 cm , bottom sandy, water temperature 18.0˚C, exposed to the sun, elevation 73 m , 19˚30’45.497”N/105˚09’09.261”E), 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 . India , Thailand , Taiwan , South China , Vietnam ( Ha Tay, Hoa Binh , Vinh Phuc , Lam Dong and Nghe An ). Remarks . Simulium ( S .) nodosum was originally described by Puri (1933b) and redescribed by Lewis (1974) . It was recorded from Vietnam by Crosskey and Howard (1997) and Pham (1998) . The females of this species were reported to be a human-biter and to transmit an Onchocerca species in Thailand (Takaoka et al . 2003).