Grey Knot-horn

Acrobasis advenella

Acrobasis advenella is a species of snout moth in the genus Acrobasis. It was described by Johann Zincken in 1818 and is found in most of Europe. They have an oligophagous diet primarily feeding on plants from the Rosaceae family including the black chokeberry. They cause significant damage to organic chokeberry farming, due to their widespread impact on the quality and quantity of the black chokeberry plants. Source

Where it is now

In the last 8 weeks this insect was recorded 23 times across 2 areas (each area is a 5 degree square).

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Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.