A shelter composed of tightly clasping leaves containing a lepidopteran larva and frass. On Epilobium canum. Observed in California in May. For discussion of the differences from the very similar Contarinia zauschneriae gall, also on E. canum, see https://www.inaturalist.org/observations/114576540 and, more recently, https://www.inaturalist.org/observations/175116215
”- Gallformers Contributors: (2024) Gallformers ID Notes©