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Creeping water bugs
Ilyocoris cimicoides natur.jpg
Ilyocoris cimicoides
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Nepomorpha
Family: Naucoridae

Naucoridae is a small family of insects commonly known as the creeping water bugs. They are very similar in appearance and behavior to the giant water bugs (Belostomatidae), and also occur in ponds and other still waters. However, most species are lotic, occurring in streams, rivers, and even a few on waterfalls. There are approximately 374 species in 37 genera in 5 subfamilies. Their distribution is primarily tropical, although a few taxa occur in northern and southern temperate regions.

They were formerly united in a superfamily Naucoroidea with the Aphelocheiridae and Potamocoridae, but these are now in their own superfamily (Aphelocheiroidea) and the Naucoroidea are monophyletic.