Effect of different temperatures and humidities on the development of the eggs of poultry louse, Lipeurus lawrensis tropicalis. (Phthiraptera: Ischnocera).

The temperature and humidity requirements for the development of the eggs of the poultry louse, Lipeurus lawrensis tropicalis were determined. It was found that temperature and humidity requirements for morphogenesis and hatching are not the same. Morphogenesis in the eggs of this louse takes place within a temperature range of 30-40 degrees C, the optimum range being 32-37 degrees C. Relative humidity does not seem to have any apparent effect on morphogenesis.