Mud-puddling

Lepidoptera (butterflies and moths) are diverse in their strategies to gather liquid nutrients. Typically, mud-puddling behaviour takes place on wet soil. But even sweat on human skin may be attractive to butterflies such as species of Halpe. More unusual sources include blood and tears. Again, similar behaviour is not limited to the Lepidoptera; for example, the various species of bees commonly called sweat bees are attracted to various kinds of sweat, including that of humans, and other bee species have been recorded as doing so to various degrees. Lachryphagous insects, including lepidopterans, dipterans, and bees, drink the tears of other animals.