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Species Page - Dioryctria contortella
Dioryctria contortella ->species page

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scientific name    Dioryctria contortella    

Dry, open forest dominated by Pinus contorta..

Reared adults emerged in July.

Forewings with raised scales. Primarily black and white, though basal area primarily reddish-brown. Male genitalia: Uncus constricted and lateral margins expanded. Valve with pronounced hooked apical projection and accessory spine. Vesica with large cornutus and many smaller cornutii. Female genitalia: Ductus bursa elongate, with posterior region narrow and widening anteriorly. Fine longitudinal wrinkles restricted to narrow region of bursa. Similar species, D. tumicolella lack reddish scaling in basal area. D. monticolella, even more similar, is separated based on minor color variations in the forewing, though host association is the only definitive method for separation.

life history
Larave bore deep galleries in blister rust swelling (Peridermium sp.) on host. Little to no pitch is found outside the entrance hole.

diet info
Only recorded from Pinus contorta in association with Peridermium blister rusts, and species described as host specific.

British Columbia, Alberta and Washington.

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