While at St. Ignatius College in the rural surroundings of Chishawasha near
Harare, Zimbabwe, Watsham spent his spare time collecting, studying. drawing, and painting parasitic wasps. He also added to his collection during his travels to Namibia, South Africa, and Europe. Much of his collection is housed at the
Natural History Museum, London, and at the South African National Collection of Insects in
Pretoria, where hymenopterists from around the world use his research into the taxonomy and biology of the fig wasps associated with
ficus thonningii. His book of drawings and watercolours of African
chalcid wasps was published in 1996. Watsham catalogued 123 species of
scelionidae complete with drawings or watercolors. He was made a Fellow of the Royal Entomological Society, and kept in touch with those who benefited from his research: medical doctors, scientists, pharmacists, molecular specialists, research scientists, entomologists, and educators around the world. When he was made an honorary member of the Entomological Society of Southern Africa, mention was made of his "exquisite insect art." ==References==