In a study to determine the costs of tsetse trapping in terms of construction materials, labour, transport and maintenance, two hundred forty-six traps used to control Glossina pallidipes in an area of 100 square kilometres at Nguruman, Kenya were evaluated from November 1990 to July 1992. The total cost of materials, labour and servicing per trap per year, was US$ 30.6 which, at that time was equivalent to 1071 Kenya shillings.

Genetic differentiations in natural populations of the tsetse fly, Glossina pallidipes Austen (Diptera: Giossinidae) collected from three ecologically distinct regions of Kenya, namely Lambwe Valley, Shimba Hills and Nguruman were analysed based on two enzymes, phosphoglucomutase (PGM) and phosphoglucose isomerase (GPI). The PGM gene frequencies of allele (a) of male and female flies from Lambwe Valley showed significant differences. A dendrogram of populations collected from different localities showed two clusters: one comprising Shimba Hills, Majimboni and Muhaka Forest and the other comprising Gendo, Homa Hills and Nguruman. This suggests mat different subpopulations of G. pallidipes have adapted to different habitats.