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Forest Pests of North America
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Table 5. –
Comparison of Common Pine Needle Casts.

  Primary Host Symptoms Fruiting Bodies Fruiting Season Needles Shed
Lophodermella concolor Lodgepole pine Red-brown bands in summer and fall; entire needle tan in following spring Tan cushions of fungus under flap of epidermis on tan needles Late spring 13 months following infection
Dothistroma pini var. linearis Ponderosa pine Distinct, red, transverse banding at random on needles; needles become tan in fall or spring following infection Black dots in red bands April-November 15-24 months following infection
Dothistroma pine var. linearis Western white pine 1-year-old or older needles turn red or brown. Red transverse banding indistinct or absent Black dots breaking through epidermis April-November Needles remain attached, drooping on twigs for 1-2 years following infection
Elytroderma deformans Ponderosa pine Needles gradually turn red-brown. Part of needle may remain green. Witches brooms. Black slit in epidermis near base of needle Mid-to late summer 12-20 months following infection
Lophodermella arcuata Whitebark pine, limber pine   Black lines on dead needles Late spring 13 months following infection

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The University of Georgia - Warnell School of Forest Resources and
College of Agricultural and Environmental Sciences - Dept. of Entomology
Last updated on Tuesday, July 02, 2002 at 11:42 AM
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