Scolytidae infestation in the Paula Souza sawmill log yard (Botucatu, São Paulo state, Brazil) and the Rio Claro estate (Lençóis Paulista/SP).
The origin was investigated of an infestation by Scolytidae in the log yard of this Brazilian sawmill. Scolytids were trapped with flight traps (model ESALQ-84) baited with ethanol located in the sawmill and surrounding area, and also in the Rio Claro estate, which is forested with Eucalyptus grandis and is the main source of the logs for the mill. Trapping data from the 3 areas were compared. In the sawmill, prime wood and log deposits were the main breeding sites of Scolytidae. Neither the sawmill surrounding area nor the Eucalyptus forest were sources of scolytid infestation, but rather logs acquired from other forested areas. The recommendation was to sample logs before entering the sawmill, and to store logs for a period of less than 30 days, especially during August/September and March/May, periods of peak of scolytid flight.