Sepedon floridensis
Steyskal, 1951
Florida snail-killing fly
A of snail-killing marsh fly in the Sciomyzidae, to Florida. are active in early spring and are associated with aquatic where their predatory larvae feed on pulmonate snails. The species was described by Steyskal in 1951 and belongs to a with 20 recognized species in North America, many of which have been investigated for potential of snail of parasitic .
Pronunciation
How to pronounce Sepedon floridensis: /sɛˈpiːdɒn flɔːrɪˈdɛnsɪs/
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Habitat
Aquatic and semi-aquatic environments including swampy areas, pond edges, stream and river banks, and drainage ditches. Temporary water courses can support . are found near emergent vegetation where females deposit masses.
Distribution
to Florida, United States.
Seasonality
have been observed active in February, suggesting early spring . Adults overwinter, enabling early-season activity.
Diet
Larvae are of aquatic pulmonate snails (air-breathing mollusks without ). Specific prey records for this are not documented, but related Sepedon species consume 8–50 snails per larva depending on species and prey availability.
Life Cycle
Females deposit small numbers of in masses on emergent vegetation. Larvae develop through three instars, with first and second instars requiring mollusks and third instars capable of taking larger snails. Larvae live just beneath the water surface, suspended by water- hairs surrounding . Mature larvae pupate in boat-shaped, upturned that float among organic matter at water margins. emerge from puparia; duration of pupal stage unknown. Adults overwinter.
Ecological Role
of aquatic pulmonate snails. Potential biocontrol agent for snail intermediate of schistosomes and livestock liver flukes, though field trials have yielded mixed results.
Human Relevance
Investigated for of snails that serve as intermediate for human schistosomes and livestock liver flukes in tropical regions.
Similar Taxa
- Sepedon spp.Other members of the share similar , preferences, and larval predatory habits on aquatic snails. Separation to level requires examination of male genitalia and other detailed morphological features.