Dasineura pellex
(Osten Sacken, 1862)
ash bullet gall midge
Dasineura pellex, commonly known as the ash bullet , is a of gall midge in the . The species induces distinctive bullet-shaped on ash trees (Fraxinus spp.). Like other members of the Dasineura, it is a with a close association to its . The species has been documented across parts of North America, with records from the northeastern United States including Vermont.
Pronunciation
How to pronounce Dasineura pellex: //ˌdasiˈnʊərə ˈpɛlɛks//
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Identification
This is identified primarily by its association with the bullet-shaped it induces on ash trees. The galls are distinctive enough to distinguish D. pellex from other Dasineura species that may occur on Fraxinus. are tiny, delicate typical of the , with reduced and long, bead-like in males. Specific morphological characters distinguishing D. pellex from require examination.
Images
Habitat
Associated with ash trees (Fraxinus spp.), occurring in forested areas, woodlands, and riparian corridors where trees are present.
Distribution
Documented from the northeastern United States, with specific records from Vermont. GBIF distribution records indicate occurrence in the US.
Diet
feed within the induced on ash trees (Fraxinus spp.), developing inside tissue.
Host Associations
- Fraxinus - inducerBullet-shaped induced on ash trees
Life Cycle
Induces on ash trees in which develop. occurs within the gall. emerge to mate and females oviposit on tissue to initiate new gall formation. Specific timing of not documented in available sources.
Ecological Role
As a inducer, modifies tissue structure and may influence local that utilize galls.
Human Relevance
May serve as an indicator of ash tree presence and health. No significant economic impact documented, though heavy could potentially affect vigor.
Similar Taxa
- Dasineura investitaAlso in Dasineura and induces , but on wood nettle (Laportea canadensis) rather than ash; gall differs
- Other Dasineura species on FraxinusSeveral induce on ash; precise identification requires examination of gall and characters