Abstract.
The two subspecies of
Glossina palpalis
(Robineau‐Desvoidy) occurring in Liberia could be reliably separated morpho‐metrically by measuring the width of the terminal dilatations of the male inferior claspers. Subspecies differentiation of female flies was less conclusive. Identification of flies from fifty‐four sites revealed that most of Liberia lies in the belt of
Glossina palpalis palpalis.
However, pure and substantial populations of
G.p.gambiensis
Vanderplank occur north of 8
o
20'N in the north‐west of Liberia.