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Acalitus calycophthirus
Acalitus calycophthirus is an eriophyid mite which causes big bud galls on birch (Betula species) twigs. It is found in Europe and was first described by the Austrian zoologist, Alfred Nalepa in 1891.
From the article Acalitus calycophthirus on Wikipedia (CC BY-SA), quoted section by section
Description
The gall consists of clusters of swollen leaves and, at first in the spring, are silvery-green. They gradually turn brown and become quite woody. The gall shelters a large number of mites which spend most of the year there, passing the winter in a dormant state. In the following spring and early summer they emerge to invade the new buds. Affected trees are silver birch (Betula pendula) and downy birch (Betula pubescens).
Wikipedia: “Description of the gall”
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
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Every page naming Acalitus calycophthirus in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 547285.