Table 1

Entomological indices

Entomological indices	Chipulukusu catchment		Kaniki catchment		Total
Entomological indices	Mapalo	Musalu	Kamalasha	Pima	Total
Species composition
An. funestus s.l	45	23	15	40	123
An. gambiae s.l.	24	71	5	6	106
An. gibbinsi	0	0	1	1	2
Culex	88	181	45	78	392
Mansonia	51	63	1	6	121
Total	208	338	67	131	744
Mean densities of malaria vectors seeking a blood meal (Mw)
An. funestus s.l.	0.97*	0.10*	0.40*	0.40*	–
An. gambiae s.l.	1.83*	1.26*	0.10*	0.14*	–
Mean densities of malaria vectors resting indoors (Mw)
An. funestus s.l.	–	0.72*	–	1.2*	–
An. gambiae s.l.	–	1.31*	–	0.05*	–

*Mw=densities using Williams mean.