Sciomyzoidea
Kelp, Marsh, Thick-headed Flies and Allies
Family Guides
8- Coelopidae(kelp flies)
- Conopidae(Thick-headed Flies)
- Dryomyzidae
- Helcomyzidae
- Heterocheilidae(half-bridge flies)
- Ropalomeridae
- Sciomyzidae(Marsh Flies)
- Sepsidae(black scavenger flies)
Sciomyzoidea is a superfamily of acalyptrate flies (Diptera: Acalyptratae) comprising at least 11 , including the well-known Sciomyzidae (snail-killing or marsh flies), Sepsidae (scavenger flies), and Coelopidae (seaweed flies). The superfamily exhibits diverse ecological specializations, with some families associated with marine or coastal and others with freshwater or terrestrial environments. The family Sciomyzidae is particularly notable for its larval and on gastropods.
Pronunciation
How to pronounce Sciomyzoidea: //ˌsaɪ.oʊ.maɪˈzoɪ.di.ə//
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Habitat
vary considerably across constituent . Coelopidae are associated with decaying seaweed in coastal marine environments. Sciomyzidae occupy marshy areas, wetlands, and moist terrestrial habitats where gastropod prey are abundant. Sepsidae are found in association with decaying organic matter, including and carrion. Other families occupy diverse moist to semi-aquatic environments.
Distribution
Worldwide distribution with constituent occurring across all biogeographic regions. Sciomyzidae are documented from the Nearctic, Neotropical, Palearctic, Afrotropical, Oriental, and Australasian regions, with 113 described and two in 25 recorded from the Americas south of the United States alone. Chile harbors 27 species in 11 genera.
Host Associations
- gastropods - preyLarval /prey for Sciomyzidae; do not feed on gastropods
Life Cycle
Complete with , larval, pupal, and stages. Third-instar larvae of Sciomyzidae have been documented in the Neotropical Region. Larval and show adaptive differences correlated with feeding transitions.
Behavior
Sciomyzidae larvae are and of terrestrial and aquatic gastropods, exhibiting specialized snail-killing . Some show phenological adaptations and of larval associated with invasions. Sepsidae exhibit scavenging behavior at decaying organic matter. Coelopidae are associated with wrack beds of decaying seaweed.
Ecological Role
Sciomyzidae have demonstrated potential value as agents for gastropod of trematode , including liver fluke snails. The superfamily contributes to nutrient cycling through decomposition (Sepsidae, Coelopidae) and of gastropods (Sciomyzidae).
Human Relevance
Sciomyzidae have been investigated for of pest snails, including those transmitting to humans and livestock. Some may have forensic relevance through association with carrion. No major economic pests or beneficial species are documented for most .
Similar Taxa
- CarnoideaAnother superfamily of Acalyptratae; distinguished by different composition and typically more saprophagous or parasitic lifestyles rather than the gastropod specialization of Sciomyzidae
- MuscoideaSuperfamily of (rather than Acalyptratae); distinguished by presence of calypteres and generally more robust body form
More Details
Family composition
The superfamily includes at least 11 : Coelopidae, Dryomyzidae, Helcomyzidae, , Heterocheilidae, Huttoninidae, Natalimyzidae, Phaeomyiidae, Ropalomeridae, Sciomyzidae, and Sepsidae. Huttoninidae and Phaeomyiidae are sometimes treated as within Sciomyzidae.
Taxonomic history
-level classification within Sciomyzoidea has undergone revision, with some groups elevated from or reduced to status. The superfamily is defined within the acalyptrate section of , characterized by reduced or absent calypteres.