Bauhinia variegata L. and Croton sparsiflorus L. against the Human Vector Mosquitoes

The aim of this was to evaluate the larvicidal activity of plant powders of Bauhinia variegata and Croton sparsiflorus against the fourth instar larvae of Aedes albopictus L., Anopheles stephensi L., and Culex quinquefasciatus Say. Derivatives of plants are enriched with active molecules with exceptional mosquitocidal properties and can be advanced as low cost environmentally friendly bio pesticides. The macerated leaf powders of B. variegata and C. sparsiflorus were tested against different mosquito species up to 24 h exposure period with the concentrations of 100, 120, 140, 160, 180, and 200 mg/100 mL of tapwater. The LC50 value of C. sparsiflorus leaf powder exhibited 136.43, 150.53 and 163.74 mg/100 mL against A. albopictus, A. stephensi, and C. quinquefasciatus Say respectively. The B. variegata leaf powder exhibited the LC50 value of 133.27, 124.99 and 135.34 mg/100 mL against A. albopictus, A. stephensi, and C. quinquefasciatus Say respectively. The present investigation clearly demonstrates that C. sparsiflorus showed cent percent mortality followed by B. variegata against different mosquito species. With further isolation and identification of bioactive molecules from B. variegata and C. sparsiflorus can be evaluated and developed novel bio pesticide against mosquitoes as well as other insect pests.