Two new strains of Tolypocladium cylindrosporum W. Gams and one strain of T. niveum (Rostrup) Bissett from Czechoslovakia were pathogenic for larvae of Culex pipiens autogenicus. The LT₅₀ was 8 or 9 days. Lethal dose was 3×10⁵ conidia/ml for T. cylindrosporum and 2×10⁶ conidia/ml for T. niveum. Conidia of both species remained virulent in sterile water at 4°C for 6 weeks. More than 2 hours of exposure to a 4×10⁵ conidia/ml suspension caused efficient infection and death.
Weiser J. (1987): Mosquito-killing activity of strains of Tolypocladium cylindrosporum and T. niveum. – Česká Mykologie 41(4): 219–224.
