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Gallmaker:
Cecidomyia pellex
Tree type:
Fraxinus sp.
Photo: Cecidomyia pellex gall on a Fraxinus leaf.

Gall maker: Cecidomyia pellex, a species of midge (Order Diptera, Family Cecidomyiidae)

Shape and Size: Referred to as the "ash bullet gall" because of its round, bullet-like appearance; the gall in the illustration is decaying, giving it a brown, wrinkled appearance. Gall size apparently variable; example is roughly 1 cm in diameter

Location: Occur on top of Fraxinus (ash) leaves, summer.

Color: Possibly variable.

Click for Full Size Image
Source: Felt, P. E. Plant Galls and Gall Makers.
Jodhpur, India: Agrobios, 2001.
p 301-2.