|scientific name Dioryctria pseudotsugella |
Common, found in various coniferous forest types throughout range.
Adult fly late July - early August
Wingspan: 10.0-11.0 mm. Lacking raised scales. Forewing primarily brown with contrasting white dentate bands and discocellular spot. Morphologically similar to Dioryctria reniculelloides. Minor variations in transverse band dentation and coloration have been used to separate the species (Mutuura and Munroe 1973; Neunzig 2004), though intermediate specimens are present in regions of overlap. Larval host records are also used for identification though host overlap also occurs. Accurate separation of D.pseudotsugella and D. reniculelloides specimens is difficult (Sopow et al. 1996).
Larvae feed on cones and cambium of hosts. Feeding also observed on needles of host plants (Prentice 1965)
Common. Not of concern.
Primary host is Douglas fir (Pseudotsuga menziesii), though larvae also found on spruce, fir and hemlock species (Picea, Abies and Tsuga spp) (Mutuura and Munroe 1973).
Southern British Columbia and Alberta, and south to New Mexico.
Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.