Mai jirgin ruwa
Wanda ked jirgin ruwa a matsayin nau'in kwari na ruwa na iya nufin:
- Corixa punctata, wani nau'in da aka sani da ƙaramin jirgin ruwa a Ƙasar Ingila
- Corixidae, dangi da aka sani da masu ruwa da tsaki a cikin Amurka da Ostiraliya
- Notonecta glauca, wani nau'in da aka sani da babban jirgin ruwa a Burtaniya (wanda ake kira backswimmer a Amurka)
- Sigara, musamman Sigara arguta, wanda aka sani da masu ruwa da tsaki a New Zealand