Mosquito breeding and opposition stimulant in fruit husks

Abstract. 1. In coastal Kenyan forests the most productive breeding habitats of Eretmapodites subsimplicipes are rain‐filled fruits of the Apocynaceae and Loganiaceae cast off by monkeys. 2. Water incubated in fruit husks stimulates females to oviposit, but a sympatic congener Eretmapodites quinquevittatus , never found in fruits, prefers tap water. 3. Thus, chemical discrimination of oviposition site may promote the micro‐habitat separations observed in nature.