Macrodiplosis castaneae
(Stebbins, 1910)
Macrodiplosis castaneae is a gall midge in the Cecidomyiidae. The is associated with chestnut trees (Castanea spp.), though specific ecological details remain poorly documented. It was described by Stebbins in 1910 and is currently listed as a synonym of Harmandiola castaneae in some taxonomic databases.

Pronunciation
How to pronounce Macrodiplosis castaneae: /mæˌkroʊdɪˈploʊsɪs kæˈstænɪiː/
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Images
Host Associations
- Castanea - Associated with chestnut trees, though specific details are unclear
More Details
Taxonomic Status
GBIF lists Macrodiplosis castaneae as a synonym of Harmandiola castaneae (Stebbins, 1910), with the match type marked as EXACT. The Macrodiplosis is recognized in Cecidomyiidae, though some sources merge these under Harmandiola.
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- Stigmella castaneaefoliella larva - Entomology Today
- Stigmella castaneaefoliella mines in American chestnut - Entomology Today
- Stigmella castaneaefoliella mines, Japanese chestnut - Entomology Today
- Stigmella castaneaefoliella Archives - Entomology Today
- When the American Chestnut Vanished, What Happened to Insects That Fed On It?