EPPO Global Database

Dendroctonus ponderosae(DENCPO)

Photos

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For publication in journals, books or magazines, permission should be obtained from the original photographers with a copy to EPPO.

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White to cream-coloured larvae of Dendroctonus ponderosae (average length 6 mm) feeding at right angles to the egg gallery.

Courtesy: G.D. Amman - USDA (US).

Vertical egg gallery in the bark of Pinus sp., showing eggs being laid in the phloem on alternate sides of the gallery and dark brown to black, 5 mm long adult D. ponderosae (new adults are light brown to yellow).

Courtesy: G.D. Amman - USDA (US).

D. ponderosae pupae (average length 5 mm) in oval cells made by the mature larvae.

Courtesy: G.D. Amman - USDA (US).

Pitch tubes on a Pinus tree newly infested by D. ponderosae; they consist of pitch and particles of bark expelled from the beetle's egg gallery, and range in colour from dark reddish to cream.

Courtesy: G.D. Amman - USDA (US).