Tag Archives: midge

Juniper Burr Gall Midge

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Juniper burr galls occur on the leaves (scales) of several species of junipers and are induced by a midge (Oligotrophus juniperi). Little is known about the life cycle (biology) of this midge. Generally, midge eggs are laid in or on … Continue reading

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Alder Fold Gall

This gallery contains 4 photos.

In early spring Dasineura sp. midges lay their eggs on young alder leaves causing midrib folds that protrude on the underside of the leaves. Within these galls the midge larvae feed before spinning a cocoon and pupating. These galls formed … Continue reading

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