Abstract A survey for natural entomopathogenic fungi of
two spotted spider mite (Tetranychus urticae) adults was
made in Erzurum, Turkey, during the period 2006. Tetranychus
urticae (65.8%) infected with a strain of the fungus
Cladosporium cladosporioides were found. Thirteen isolates
of C. cladosporioides were assessed against T. urticae, in a
single dose (8 9 106 conidia ml -1
), laboratory bioassay on
bean leaflets. The total mortality percentage caused by
C. cladosporioides isolates varied from 50.95 to 74.76% and
LT50 values ranged from 2.34 to 3.90 days. The results
revealed that isolates of C. cladosporioides were effective
against two spotted spider mite. This is the first record o