VNU Journal of Science, Natural Sciences and Technology 27 (2011) 9-13 In the present study, faunistic data on water bugs from urban area of Hanoi has been catalogued for the first time. From our surveys, we have identified a total of 23 species of 12 genera and nine families of aquatic bugs (Nepomorpha) and semi-aquatic bugs (Gerromorpha) from the studied area. The water bug fauna in Hanoi is of a typical lowland fauna in Southeast Asia mainland, comprising many species with wide distribution. .
