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Aculus laevis
Aculus laevis is a species of mite which causes galls on the leaves of sallows (Salix species). It was first described by Alfred Nalepa in 1892.
From the article Aculus laevis on Wikipedia (CC BY-SA), quoted section by section
Description
The gall is a 1–2 mm pouch on the upper side of the leaves of sallows and their hybrids. At first they are yellowish-green and turn to a reddish-brown later. On the underside of the leaf is an elliptical opening which has protruding hairs and contains a single mite. There can be up to thirty galls on a leaf. The gall has been found on eared willow (S. aurita), goat willow (S. caprea), grey willow (S. cinerea) and their hybrids.
Similar species The similar galls on the longer leaf willows such as crack willow (S. fragilis), are caused by A. tetanothrix. Redfern et al. (2011) state that the identification of all mite galls on Salix species is tentative and there are probably unnamed species yet to be described. In addition the mites should be verified by an expert.
Wikipedia: “Description of the gall”
Range & habitat
Aculus laevis has been recorded from Austria, Croatia, Finland, France, Germany, Great Britain (England, Scotland and Wales), Hungary, Ireland and Slovenia.
Wikipedia: “Distribution”
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
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Every page naming Aculus laevis 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 469409.