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Abstract:
Several new or poorly known Neoperla from the South-East Asian mainland are described and illustrated. N. hoabihnica Navás, N. melanocephala Navás, N. banksi (Illies), comb. n., and N. angustilobata nom. n. are redescribed from types. The description of N. thai Stark is improved and its female described for the first time. New species named are N. leptophallus, N. saraburi, N. nova, N. coronata, N. serrata, N. asperata, N. laotica, N. malleus and N. cameronis .