Rhopalomyia occidentalis

In Progress

Family: Cecidomyiidae (Midge) | Genus: Rhopalomyia

Detachable:
Color: gray, black
Texture: pubescent, hairy
Abundance:
Shape:
Season:
Alignment: erect, leaning
Walls: thin
Location: bud, lower leaf
Form:
Cells: monothalamous
Possible Range:
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Gall image

On mugwort in Marin County, Calif. in July

Image by Krissa Klein © CC-BY

Image Details

Gall image
Source:
License: CC-BY
Attribution:
Creator: Krissa Klein
Uploader: nancyasquith
Last Modified: nancyasquith
Caption: On mugwort in Marin County, Calif. in July
Gall image
Image by Krissa Klein © CC-BY

Further Information (3)

License: Public Domain / CC0

License: Public Domain / CC0

License: All Rights Reserved

See Also:
iNaturalist BugGuide Google Scholar Biodiversity Heritage Library
Created Feb 4, 2026 1:47 PM UTC • Last updated Feb 4, 2026 1:47 PM UTC