Tear-feeding
Guides
Hypeninae
Hypenine Snout Moths
Hypeninae is a subfamily of moths within the family Erebidae, first described by Herrich-Schäffer in 1851. Members are commonly known as snout moths due to their elongated labial palps that project forward like a snout. The subfamily was previously classified within Noctuidae but has been reclassified to Erebidae following taxonomic revisions. A notable species, Mecistoptera griseifusa, has been documented feeding exclusively on tears using its proboscis.
Phortica
Phortica is a genus of small flies in the family Drosophilidae, subfamily Steganinae. Several species are medically significant as biological vectors of the zoonotic eyeworm Thelazia callipaeda, which causes ocular infections in humans, domestic animals, and wildlife. The genus includes at least five species in Europe and the Middle East, with P. variegata and P. okadai being the best-documented vectors. These flies exhibit unusual zoophilic feeding behaviors, including lachryphagy (tear-feeding) in adult males of some species. The genus has gained increasing attention due to climate-driven range shifts and expanding transmission of thelaziosis.
Steganinae
Steganinae is the smaller of two subfamilies in the fruit fly family Drosophilidae, established by Hendel in 1917. The subfamily is monophyletic but lacks a single diagnostic morphological character distinguishing it from the larger Drosophilinae. Members display diverse feeding behaviors, with some species exhibiting zoophilic habits unusual for drosophilid flies. The subfamily includes approximately 350 described species across multiple tribes and subtribes, though phylogenetic relationships remain partially unresolved.