A new microencapsulation method of Metarhizium anisopliae based on gelatin (GE) and gum arabic (GA) is presented. The conditions to produce 35–50 µm spheres relied on 1% wall material, GE:GA ratio 1:1–1:2, core:wall ratio 1:1, under pH 4.0, 35−50 °C and 500–700 r/min agitation. Microcapsulation provided protection against UV and longer shelf life as compared to non-encapsulated conidia. The obtained preparation proved active against the red imported fire ant Solenopsis invicta.