Figure 4. Seasonal emergence and flight period of adult Asiatic ambrosia beetles, Xylosandrus crassiusculus (Motschulsky), at Monticello, Florida, 1995-1998 as determined from trapping around nurseries using the Kovach plexiglass trap baited with ethyl alcohol. Females are trapped most frequently during the spring and it is at this time they are most likely to infest nursery-grown trees. Smaller numbers are collected in the summer and fall. Only during the coolest winter months are hardwood logs somewhat safe from ambrosia beetle infestation.
Credit: R.F. Mizell, University of Florida