Gallformers

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Rhopalomyia sulcata

Family: Cecidomyiidae | Genus: Rhopalomyia

Hosts: Baccharis halimifolia / Baccharis heterophylla / Baccharis neglecta / Baccharis pilularis / Baccharis pteronioides / Baccharis salicifolia / Baccharis salicina / Baccharis sarothroides

Detachable: detachable

Color: green, purple, tan

Texture: hairless

Abundance:

Shape: cylindrical

Season:

Related:

Alignment: erect, leaning

Walls:

Location: upper leaf, lower leaf, leaf midrib, on leaf veins, between leaf veins, at leaf vein angles, leaf edge

Form:

Cells: monothalamous

Possible Range:ⁱ

Common Name(s): Tube Gall Midge

Synonymy:

On Baccharis pilularis. Almaden, San Jose, CA

Image by Merav Vonshak © CC-BY

On Baccharis pilularis. Coyote, CA

Image by Merav Vonshak © CC-BY

On Baccharis pilularis. Coyote, CA

Image by Merav Vonshak © CC-BY

On Baccharis pilularis. Pacifica, CA

Image by Merav Vonshak © CC-BY

On Baccharis pilularis. Pacifica, CA

Image by Merav Vonshak © CC-BY

Image by RJ Gagne, Paul E. Boldt. © CC-BY

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.

The Gall Midges (Diptera: Cecidomyiidae) of Baccharis spp. (Asteraceae) in the United States

“

Rhopalomyia sulcata Gagne New Species

Holotype. — From columnar gall on B. salicina, Pecos R., Loving, Eddy Co., New Mexico

Distribution. — United States: Arizona, New Mexico, western and southern Texas; Mexico: Durango, Nuevo Leon.

Hosts: This species is reported from B. halimifolia, B. heterophylla, B. neglecta, B. pteronioides, B. salicina, and B. sarothroides. The record on B. heterophylla is based only on similarity of the galls, but the other host records are based on adults and/or pupae. A generation of R. sulcata was reared from B. halimifolia and B. sarothroides in a greenhouse from a generation that came from field-collected galls on B. salicina.

”

- RJ Gagne, Paul E. Boldt.: (1995) The Gall Midges (Diptera: Cecidomyiidae) of Baccharis spp. (Asteraceae) in the United States^©

Reference: https://www.biodiversitylibrary.org/page/16152993#page/791/mode/1up

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