Trap ID 48 Holmön

Locality: SE, Västerbotten, Umeå kommun, Holmön
GPS coordinates: WGS 84 decimal: 63.795771, 20.897205
Trap owner: Per Hansson
Habitat: Close to hollow mulch sallow in primeval spruce forest

On 12 occasions, while servicing other insect traps on Holmön (Västerbotten), an island in the archipelago off the coast of Umeå, trap attendant Per Hansson also emptied pan traps of four different colours. On 11 occasions, the traps were positioned close to a hollow, decaying sallow tree (Salix caprea) in the islands old-growth spruce forest, while on one occasion they were placed inside the hollow tree itself. In addition, he twice collected insects by sweep-netting the air (rather than the vegetation) in the immediate vicinity of the same tree.

Unfortunately, no photograph of the tree in question is available. Instead, the image provides an aerial view of the surrounding habitat, captured by a drone above the collection site. The drone pilot, Leif Jönsson, is standing immediately next to the decaying sallow tree.

Additional notes: 
Each catch has a unique ID, with its corresponding trapping period (start and end dates) listed in the table below: