Gallformers Articles

In-depth articles on gall biology, identification guides, and scientific literature.

All aphids (1) contributing (1) faq (1) guide (2) identification (4) inat (1) keys (3) meta (2) midges (1) populus (2) supporters (1) taxonomy (1) undescribed (1) vitis (1)

Populus Midge Gall Key

By Adam Kranz • January 26, 2026
identification keys midges populus

This key is largely based on original categorizations of iNaturalist observations, with some remarks on the limited prior literature. Even moreso than many gall-inducer taxa, midge galls on native Nor...

Key to Galls on Grapes (Vitis)

By Adam Kranz • January 26, 2026
identification keys vitis

The Key 1. Integral 1. On main stem, a slight swelling typically directly adjacent to a node. Contains beetle larva and frass: Ampeloglypter sesostris 2. Swollen buds containing gall midge larvae: Con...

Populus Aphid Gall Key

By Adam Kranz • January 26, 2026
identification keys aphids populus

This key is a synthesis of gall descriptions given in the literature. There is reason to believe that these gall descriptions may not map perfectly onto monophyletic aphid taxa; cases where this is kn...

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