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Nest of Asian hornet
light-brown, spherical or pear-shaped, often in tree top
black body, yellow is scarce on abdomen, black legs with yellow tips
common and German yellowjacket
small, black and yellow, yellow on thorax
violet carpenter bee
huge black bee, dark wings with violet reflection
colour reddish brown, 2 light yellow bands on abdomen (©carnifex, iNaturalist)
For more information on these species, see the identification page.