Winnertzia
Rondani, 1860
Species Guides
1Winnertzia is a of mycophagous gall midges in the Cecidomyiidae, Porricondylinae. The genus is exceptionally speciose, with 136 extant currently recognized following recent taxonomic revisions. Species are documented from the Palearctic, Neotropical, and Australasian regions. Larvae develop in association with fungal substrates.
Pronunciation
How to pronounce Winnertzia: /wɪˈnɛrtsiə/
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Identification
Identification of Winnertzia relies heavily on male genitalia , particularly gonostylar claws and gonocoxal emarginations. using COI sequences has been employed to refine species concepts and distinguish cryptic species. The W. setosa group is characterized by conspicuously long and exposed gonostylar claws and dense, large setae bordering the gonocoxal emargination.
Habitat
Found in diverse geographic regions and sampled using . Larval development occurs in soil, fungal mycelium, under decaying bark of coniferous trees, in fruiting bodies of wood fungi, and in corms of Colchicum speciosum.
Distribution
Sweden (93 documented), Peru (first Neotropical record: W. panguana), Tasmania/Australia (first Australasian record: W. warraensis). Additional records from Norway.
Diet
Mycophagous; larvae feed on fungal mycelium and fruiting bodies of wood fungi.
Host Associations
- fungal mycelium - larval development and feedingprimary substrate
- fruiting bodies of wood fungi - larval development and feeding
- decaying bark of coniferous trees - larval
- corms of Colchicum speciosum - larval development
Life Cycle
Larvae develop in soil, fungal substrates, and plant material associated with decay. Specific sites and longevity have not been documented.
Ecological Role
Decomposer; contributes to nutrient cycling through mycophagy.
Similar Taxa
- ParwinnertziaFormerly recognized as a distinct , but synonymized with Winnertzia based on morphological and molecular evidence. previously assigned to Parwinnertzia are now recombined into Winnertzia.
More Details
Taxonomic revision
A 2020 revision based on COI barcoding data and male genitalia increased the known Swedish fauna from 26 to 93 and described 37 new species globally. The study introduced a narrower species concept and established the W. setosa group for species with distinctive gonostylar and gonocoxal characters.
Species richness
Winnertzia represents a substantial portion of mycophagous cecidomyiid diversity; in Sweden, 93 of 751 mycophagous cecidomyiid (12.4%) belong to this .