Urban Infestation Patterns of Argentine Ants, Linepithema humile, in Los Angeles

Figure 2

Month to month record of infestations and climate data at UCLA. Lines with open squares are the number of total calls; lines with closed circles are the number of buildings infested. The crosses are the mean maximum temperature for the month, and the dashed line is the cumulative monthly rainfall (both from the UCLA station of the National Environmental Satellite, Data, and Information Service).