Species Details

Thallophaga hyperborea

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

IdentificationMedium-size (3.0 – 3.7 cm wingspan) moths with moderately pointed forewings. Mildly sexually dimorphic, with males brown and females red-brown or pink. Forewings pale brown (males) or pink (females), crossed by a narrow slightly curved darker median band. The antemedian and postmedian lines and to a lesser degree the terminal line marked by a series of dark dots or spots where they cross the veins. Hindwings paler, almost white, with a dark discal dot and the postmedian line marked by a series of dots at the veins. Both wings lightly dusted with darker scales.

Scientific Name Thallophaga hyperborea Identification
Medium-size (3.0 – 3.7 cm wingspan) moths with moderately pointed forewings. Mildly sexually dimorphic, with males brown and females red-brown or pink. Forewings pale brown (males) or pink (females), crossed by a…
Medium-size (3.0 – 3.7 cm wingspan) moths with moderately pointed forewings. Mildly sexually dimorphic, with males brown and females red-brown or pink. Forewings pale brown (males) or pink (females), crossed by a narrow slightly curved darker median band. The antemedian and postmedian lines and to a lesser degree the terminal line marked by a series of dark dots or spots where they cross the veins. Hindwings paler, almost white, with a dark discal dot and the postmedian line marked by a series of dots at the veins. Both wings lightly dusted with darker scales.
Life History
Adults are nocturnal and come to light. In BC two broods, likely only one in AB. Larvae are innocuous solitary defoliators. They are described by McGuffin (op cit.), and illustrated in color by Duncan (2006). They…
Adults are nocturnal and come to light. In BC two broods, likely only one in AB. Larvae are innocuous solitary defoliators. They are described by McGuffin (op cit.), and illustrated in color by Duncan (2006). They overwinter as pupae buried in the soil (Duncan, op. cit.).
Diet Info
The primary larval host in Canada is western hemlock (Tsuga), but it also feeds on Douglas fir (Pseudotsuga), Red cedar (Thuja) and firs (Abies), with fewer records from willow (Salix) and alder (Alnus) and other…
The primary larval host in Canada is western hemlock (Tsuga), but it also feeds on Douglas fir (Pseudotsuga), Red cedar (Thuja) and firs (Abies), with fewer records from willow (Salix) and alder (Alnus) and other conifers (Prentice, 1963; McGuffin, 1987).
Range Alaska panhandle and the Queen Charlotte Islands south to California, east to extreme southwestern AB.

Citation

Page Citation for Thallophaga hyperborea

Page Citation

"Thallophaga hyperborea, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6203. Accessed 25 Jul. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Geometroidea Family Geometridae Subfamily Ennominae Tribe Lithinini Genus Thallophaga Species Thallophaga hyperborea
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum