Lethocerus indicus is a giant water bug in the family Belostomatidae, native to South and Southeast Asia, as well as southeast China, the Ryukyu Islands, and New Guinea. It was originally described as Belostoma indicum but is no longer placed in that genus.

This insect is well known as an edible species in a number of different Southeast Asian cuisines. The taste of the flight muscles is often compared to sweet scallops or shrimp.

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