Barbara colfaxiana

(Kearfott, 1907)

Douglas-fir cone moth

A small tortricid whose larvae develop within Douglas-fir conelets, feeding on seeds and cone structures. The occurs throughout the range of its tree in western North America, from British Columbia through the Pacific Coast States to the Rocky Mountains. It is of economic concern in seed orchards, where high densities can cause substantial seed loss.

1914. Cones from which adult moths have emerged. Barbara colfaxiana. Ashland, Oregon. (26445429099) by R6, State & Private Forestry, Forest Health Protection. Used under a Public domain license.

Pronunciation

How to pronounce Barbara colfaxiana: //ˈbɑːr.bə.rə kol.fæk.siˈɑː.nə//

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Habitat

Douglas-fir (Pseudotsuga menziesii) forests and seed orchards; larvae develop within conelets in tree crowns.

Distribution

British Columbia, Pacific Coast States of the USA, and Rocky Mountains—throughout the range of Douglas-fir. Specific study sites include Vancouver Island, interior British Columbia, and the Willamette National Forest, Oregon.

Diet

Larvae consume Douglas-fir cone structures including bracts, , and seeds.

Host Associations

Pseudotsuga menziesii - primary Douglas-fir; larvae develop within conelets
Glypta evetriae - Ichneumonid of Barbara colfaxiana

Life Cycle

are laid in Douglas-fir conelets. Larval development occurs within cones; specific instar documented in cited literature. and details not specified in available sources.

Behavior

exhibit significantly clumped spatial distribution within conelets across all site-year combinations studied. No consistent vertical stratification of eggs within tree crowns; distribution varies among sites and years. Larvae feed internally within conelets.