Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

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.

Verified Sightings

Displaying 1 - 3 of 3 verified sightings
Observation date: Jun 26, 2021
Submitted by: weflybye
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 28, 2021
  Details
Observation date: Jun 15, 2017
Submitted by: Jim Eckert
Region: Graham County, Arizona, United States
Verified by: Jim Eckert
Verified date: Dec 03, 2017
  Details
Observation date: Jul 18, 2015
Submitted by: coreyk
Region: Clark County, Nevada, United States
Verified by: Robert Martin
Verified date: Mar 18, 2016
  Details