Mollusk-predators
Guides
Hoplodictya
marsh flies
Hoplodictya is a genus of marsh flies (family Sciomyzidae) established by Cresson in 1920. The genus contains five described species distributed across North and South America. As members of Sciomyzidae, these flies are associated with wetland and marsh habitats. The genus is placed in the tribe Tetanocerini, a group characterized by predatory or parasitoid larvae that develop in mollusk hosts.
Sciomyzidae
Marsh Flies, Snail-killing Flies
Sciomyzidae is a family of acalyptrate flies in the order Diptera, commonly known as marsh flies or snail-killing flies. The family contains 543 extant species in 63 genera with worldwide distribution, though poorly represented in the Australasian and Oceanian realms. Adults are small to medium-sized flies (2–14 mm) typically found in wet habitats. The larvae are predominantly predators or parasites of freshwater and terrestrial mollusks, particularly snails and slugs, making this family notable for its specialized feeding biology.