Crewe is Dir., Centre for the Advancement of Scholarship, U. of Pretoria (UP); former Vice-principal of UP; former pres., Acad. of Science of South Africa; fellow, Royal Soc. of South Africa; fellow, African Acad. of Science, and Royal Entomological Soc. of London. He obtained degrees in chemistry and biochemistry at the U. of Natal in Pietermaritzburg. He obtained his PhD in entomology at the U. of Georgia where he developed his interest in chemical communication and social organization in social insects. He was director of the Communication Biology Research Group, U. of Witwatersrand, for 10 years; dean, Science Faculties at bot h the univ. of Witwatersrand and Pretoria, and pres., Entomological Society of Southern Africa. He has been awarded the Gold Medal, Zoological Society of South Africa, the Gold Medal, Acad. of Science of South Africa and Ordre National du Mérite rank Chevalier.