Harmandiola p-tremuloides-like-globuli

The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Harmandiola
Detachable: integral
Color: pink, red, green
Texture: hairless
Abundance:
Shape: cylindrical
Season: Summer
Related:
Alignment: erect
Walls:
Location: upper leaf, leaf midrib, between leaf veins
Form:
Cells: monothalamous
Possible Range:i
Common Name(s):
Synonymy:
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image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli
image of Harmandiola p-tremuloides-like-globuli

Gallformers ID Notes

A small, green to pink-red, hairless, globular to capsule-shaped gall on the upper side of leaves of Populus tremuloides. Only a small flat surface, not protruding at all, is visible on the lower side. Observed from Alaska to Prince Edward Island and south to New Mexico, fresh specimens reported between May and August.

This gall closely resembles the gall induced by Harmandiola globuli, known from Populus alba and tremula in Europe.

This gall morphotype can be distinguished from other midge galls on Populus leaves by the following traits:

  • Larva concealed within galled tissue, protruding only on the upper side of the leaf
  • Thin walled, capsule shaped, small

- Gallformers Contributors: (2023) Gallformers ID Notes©


Further Information:
Pending...

See Also:
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value p-tremuloides-like-globuli on iNaturalist. You can view them here:
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