#tarsolepis

Moths of the genus Tarsolepis have cryptic wing-patterns that mimic the appearance of wood, but their wings are also decorated with several patches of highly reflective scales that have a silvery, almost mirror-like appearance when exposed to direct light.

Several of these moths are known to engage in lachryphagy, meaning that they drink the tears of other animals. They generally do this with large mammals like water buffalo, elephants, cattle, and horses, but they've also been observed drinking the tears of human beings.

The moth will typically hover near the host's face while it uses its proboscis to sip the fluid from around the eye.

This behavior might seem disturbing, but Tarsolepis moths are not known to be harmful, aside from causing very mild irritation and/or inflammation when they probe the host's eye with their proboscis.

As this article notes:

The hosts’ reaction to the moths approaching them, trying to alight near eyes, or being settled there with the proboscis probing or rubbing on lid and cornea, has been outlined in some detail; reactions are generally mild. Of course such massive moths as Tarsolepis can disquiet a sensitive host by just circling around it, but when the insects persisted the host often ended up tolerating the intruder.

Lachryphagous behavior has also been observed in moths from several other genera/families; it's known to occur in species like Rhagastis olivacea, Arcyophora longivalvis, Poncetia albistriga, and Hemiceratoides hieroglyphica (those are just a few examples).

Researchers believe that moths engage in lachryphagy as a way to supplement their diet with important nutrients, especially sodium.

Sources & More Info:

Moths of Borneo: Tarsolepis sommeri

The Heaviest Tear-Drinkers: Figures 42, 43 and 51

Journal of Vector Ecology: Blood, Sweat, and Tears: a Review of the Hematophagous, Sudophagous, and Lachryphagous Lepidoptera