Fir Cone Borer Moth Eucosma siskiyouana (Kearfott, 1907)

Family: Tortricidae

Subfamily: Olethreutinae

Identification: Forewing dark brown, strongly checkered with squarish gray spots (flagstone patio effect).

Wing Span: 2.2 cm

Life History:

Flight: Adults are nocturnal, fly from spring to early summer.

Caterpillar Hosts: Feed in white fir (Abies concolor) and noble fir (Abies procera) cones, likely other firs.

Adult Food:

Habitat: Coniferous forests in midelevation zones in western mountains.

Range: California north to Washington, east to Utah.

Conservation:

NCGR:

Management Needs:

Taxonomy Notes: None.

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