: the present study aimed to deepen our knowledge of the specific diversity of the Culicidian fauna on the outskirts of Ain Touila, district of Khenchela (Northeast of Algeria), over a very limited period, using a light trap sampling method to capture adult mosquitoes. The identification of the targeted species was conducted via observation under a microscope in addition to the use of the software of the Culicidae of Mediterranean Africa established by the IRD of Montpellier, France. Several morphometric variables were considered for adult females. Biometrics was evaluated using length and width measurements based on specific criteria: antennae, wing, paw1, and abdomen and compared the studied species. This inventory revealed the existence of 51 individuals belonging to 9 species of the Culicidae family: • One common species: Culiseta longiareolata (15 individuals) • Six rare species: Orthopodomiya pulcripalpis (5 individuals), Aedes esoensis rossicus (8 individuals), Aedes aegypti (6 individuals), Culiseta ochroptrea (6 individuals), Uranotaenia unguiculata (4 individuals), Aedes vexans (3 individuals), • Two very rare species: Culiseta morsitans (2 individuals) and Culex brumpti (2 individuals).