Both wasps and black widows are human-adapted, and people have created ideal habitats like roof underhangs for paper wasp nests and dry, undisturbed places like crawl spaces for black widows.
Wasps are about one-third inch (one centimeter) to one inch (two and one-half centimeters) long. Hornets are larger. Wasps have black and yellow rings, while hornets have black and white rings.
There are over 7,000 species of wasp living in the UK, comprising a huge variety of solitary and social species. The majority are parasitoids, which have young that eat insects or spiders alive. But ...