|scientific name Dioryctria ponderosae |
Dry. open forest dominated by Pinus ponderosa.
Adults fly as early as May in southern localities, though adults primarily emerge July-early August.
Forewings with weakly raised scales in the basal, subbasal, and medial groups. Discocellular spot with strongly raised scales. Forewings primarily black with some reddish scales in the basal, subbasal and terminal areas. Discocellular spot white, contrasting strongly with the forewing. Male genitalia: Uncus constricted at the base. Valve with apical projection well-developed with hooked tip, lacking an accessory spine. Vesica with a large cornutus and many small cornutii. D. ponderosae similar to D. okanaganella, but with less reddish scaling particularly in the basal and terminal area.
Larvae bores in the cambium under the bark of host plant producing pitch masses on trunk (Heinrich 1956; Neunzig 2004).
Not of concern.
Pinus ponderosa only recorded larval host (Heinrich 1956; Neunzig 2004).
Washington and Montana south to California and northern Mexico.
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