The handful of colony-living, nest-building species is just a tiny fraction of overall wasp diversity, estimated at more than 9,000 species in the UK alone. Most wasps are solitary, some are tiny ...

Insecticides will not destroy the nests, however. Nests that are not visible, where wasps and hornets are only seen flying around an opening, are the most difficult to remove. Hahn said professional ...

were the most common species (both representing 44%). The European hornet (Vespa crabro) made up 6%, while two rarer species were also found. Social wasps such as the hornets and yellow-jackets ...