Tetanocera melanostigma
Steyskal, 1959
marsh fly
Tetanocera melanostigma is a of marsh fly in the Sciomyzidae, described by Steyskal in 1959. It belongs to a whose larvae are primarily predatory on aquatic snails and slugs. The species is part of a family known for its ecological role in controlling mollusk in wetland .
Pronunciation
How to pronounce Tetanocera melanostigma: /tɛ.taˈnoʊ.sɛ.ra mɛˌlæ.nəˈstɪɡ.mə/
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Identification
The specific epithet "melanostigma" (meaning "black spot") suggests the presence of a dark marking, likely on the wing or body, that distinguishes this from . Definitive identification requires examination of male genitalia and comparison with .
Habitat
As a member of Sciomyzidae, this is associated with marshy or wetland environments where its molluscan occur.
Distribution
Distribution records are sparse; documented observations exist in North America based on limited iNaturalist records.
Host Associations
- Aquatic snails (Gastropoda) - Larvae of Tetanocera are known to prey on aquatic snails; specific records for T. melanostigma are not documented
Ecological Role
Member of a that contributes to regulation of freshwater snail , with potential implications for where snails serve as intermediate for trematode .
Similar Taxa
- Tetanocera plebeiaSimilar size and general appearance; distinguished by wing pattern and male genitalia
- Tetanocera robustaOverlapping distribution; T. melanostigma typically smaller with more pronounced dark markings
More Details
Taxonomic note
Described by Steyskal in 1959, this remains poorly known with limited published biological data. The Tetanocera contains approximately 50 species worldwide, many with restricted distributions and specialized requirements.