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Knotting Gall
Chirosia betuleti
The knotting gall, is caused by the fly Chirosia betuleti (Ringdahl, 1935). The gall develops in the terminal shoots of ferns, such as broad buckler fern (Dryopteris dilatata), male fern (Dryopteris filix-mas), lady fern (Athyrium filix-femina), and ostrich fern (Matteuccia struthiopteris).
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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Every page naming Chirosia betuleti in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 487156.