author(s)
Michel Laurince Yapo, Dely Pecosse Boua, Katchoi Noeline Kone and Dramane Diomande

abstract
The study aims to survey the diversity and distribution of the aquatic insects of two dam lake in the northern region of Côte d’Ivoire. Aquatic insect were collected using a kick-net during three months: from January 2020 to March 2020. Environmental variables such as transparency, temperature, pH, dissolved oxygen and conductivity were measured in situ between 08.00 am and 10.00 am. Twenty-seven and 45 taxa were recorded in Koko and Natiokobadara lakes respectively. These taxa belonged to 23 families and 6 orders. Insects belonging to the orders Heteroptera dominated quantitatively and qualitatively the settlement. Koko dam lake registered the highest values of Shannon-Wiener index and evenness and the lowest value of Margalef richness index. The distribution of the main aquatic insects responsible for the differences between the Natiokobadara and Koko sites was visualized using correspondance analysis. The dam lake can be considered as a refuge for aquatic insects.