Asphondylia s-sempervirens-bud-rosette-gall

Complete

The inducer of this gall is unknown or undescribed.

Gallformers Code:

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Family: Cecidomyiidae (Midge) | Genus: Asphondylia

Hosts: Solidago mexicana / Solidago sempervirens

Detachable: Integral

Color: green

Texture: leafy

Abundance: frequent

Shape: cluster, rosette

Season: Summer, Fall

Alignment: erect, integral

Walls: thin

Location: bud, stem

Form:

Cells: monothalamous

Possible Range:

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*Asphondylia monacha*-like rosette gall on *Solidago sempervirens* on Block Island, Rhode Island, 29 Aug, 2021. Observation and photo by Steven Lamonde, posted to iNaturalist.

Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.

Further Information (4)

Taxonomy and phylogeny of the Asphondylia species (Diptera: Cecidomyiidae) of North American goldenrods: challenging morphology, complex host associations, and cryptic speciation - Netta Dorchin, Jeffrey B. Joy, Lukas K. Hilke, Michael J. Wise, Warren G. Abrahamson (2015) [Link]

Gallformers ID Notes - Gallformers Contributors (2026) [Link]

License: Public Domain / CC0

Goldenrod Rosette Galls, Part 2 - Eiseman, Charley (2012) [Link]

Goldenrod Rosette Galls, Part 3 - Eiseman, Charley (2013) [Link]

Created Feb 4, 2026 1:47 PM UTC • Last updated Feb 4, 2026 1:47 PM UTC