Growth of southern pine beetle spots.

The progression of tree attacks within infestations of Dendroctonus frontalis. Based upon measurements of tree-specific landing rates by D. frontalis within three spots in the Chickasawhay Ranger District, DeSoto National Forest, Mississippi (July - September 2004). All infestations were in similar stands of slash pine (Pinus echinata): ca. 20 years old, average diameter = 7-8 inches (17-19 cm), and average height = 62-64 feet (19 m).

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A rapidly growing beetle spot
(SPBIS #04-39)
.
A moderately growing beetle spot
(SPBIS #04-32).
A slowly growing beetle spot
(SPBIS #04-46).