Synonyms and other taxonomic changes
Gabriola dyari Taylor, 1904
Explanation of Names
Specific name dyari
is named in honor of the USDA entomologist Harrison Gray Dyar Jr.
(1866-1929), who described hundreds of species and genera of lepidoptera.
Adult: body slender; antennae pectinate (at least in males); forewing brownish-gray with black speckling and lines; AM and PM lines thick, AM line slightly curved, PM line zigzagged or sinuate; two or three black wedges at costa near apex; diffuse whitish patches in basal and anal angle areas; hindwing uniformly brownish-gray except dark thin terminal line. For additional information see Ringe's description(1)
Larva: head light tan with reddish-brown mottling, vertex moderately cleft; body stocky with numerous swellings, rusty brown to gray with white dorsal patches on the second, fourth, and eighth abdominal segments
[adapted from description at Canadian Forest Service]
Alaskan panhandle and British Columbia to California
adults fly from June to October in California
larvae from May to July
larvae feed on foliage of coniferous trees: principal hosts are Western Hemlock and Douglas-fir; other hosts include Western Red Cedar, Amabilis Fir, Grand Fir, Subalpine Fir, Engelmann Spruce, Mountain Hemlock
one generation per year; overwinters as an egg; pupation occurs in a cocoon on a twig in August, and lasts for approximately 26 days
The larva at rest resembles a bird dropping, but it can contort its body into a configuration that looks like a male cone of conifers.
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is similar but lacks diffuse whitish patches on the forewing, and apparently occurs only in Arizona (see pinned adult image
of G. regularia
Powell, J. A. & P. A. Opler, Moths of Western North America, pl. 29.24, 29.25; p. 214. (2)