Species Details

Xanthorhoe labradorensis

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

SeasonalityAdults in Alberta from late May through late August. IdentificationA small (approximately 2.5 cm wingspan) flimsy moth with a small body and broad wings. Wings light grey., slightly mottled. Basal are red brown, antemedian line prominent, black. Area between antemedian and postmedian lines rust-red, and a small red-brown patch on the costa before the apex. Hindwings light grey. The black antemedian line followed by the wide red median band should separate labradorensis from all but X. packardata McD. These two species are frequently misidentified in collections and elsewhere, and should be dissected for positive identification. In packardata the aedeagus is very slender (about 1/5 as wide as the space within the genital ring (tegument and vinculum) with a peculiar cluster of about 10 setae at the top of the aedeagus that are like cylinders with a thin seta at the tip, like dynamite with a short fuse, and the apex of the valve is flat with a small dorsal process. In labradorensis, the aedeagus is about ½ as wide as the capsule space, there is a large cluster of long tapered cornuti at the top, and the subapical process is larger and projects on the inner surface of the valve as a triangular subapical tooth (D. Lafontaine, pers. comm.).

Scientific Name Xanthorhoe labradorensis Seasonality Adults in Alberta from late May through late August. Identification
A small (approximately 2.5 cm wingspan) flimsy moth with a small body and broad wings. Wings light grey., slightly mottled. Basal are red brown, antemedian line prominent, black. Area between antemedian and postmedian…
A small (approximately 2.5 cm wingspan) flimsy moth with a small body and broad wings. Wings light grey., slightly mottled. Basal are red brown, antemedian line prominent, black. Area between antemedian and postmedian lines rust-red, and a small red-brown patch on the costa before the apex. Hindwings light grey. The black antemedian line followed by the wide red median band should separate labradorensis from all but X. packardata McD. These two species are frequently misidentified in collections and elsewhere, and should be dissected for positive identification. In packardata the aedeagus is very slender (about 1/5 as wide as the space within the genital ring (tegument and vinculum) with a peculiar cluster of about 10 setae at the top of the aedeagus that are like cylinders with a thin seta at the tip, like dynamite with a short fuse, and the apex of the valve is flat with a small dorsal process. In labradorensis, the aedeagus is about ½ as wide as the capsule space, there is a large cluster of long tapered cornuti at the top, and the subapical process is larger and projects on the inner surface of the valve as a triangular subapical tooth (D. Lafontaine, pers. comm.).
Life History
There is a single annual brood, with adults in Alberta from late May through late August. Adults are nocturnal and come to light. The larvae are polyphagus with a range of mostly herbs but also some woody plants…
There is a single annual brood, with adults in Alberta from late May through late August. Adults are nocturnal and come to light. The larvae are polyphagus with a range of mostly herbs but also some woody plants listed as hosts (Covell, 1984).
Diet Info larvae are polyphagus with a range of mostly herbs but also some woody plants listed as hosts Range Widespread. Occurs across Canada from NL to BC and AK, north to YT and NWT, south in the east at least LA and MS. Found in open wooded areas, edges etc.
Xanthorhoe labradorensis
Xanthorhoe labradorensis

Citation

Page Citation for Xanthorhoe labradorensis

Page Citation

"Xanthorhoe labradorensis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4805. Accessed 25 Jul. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Geometroidea Family Geometridae Subfamily Larentiinae Tribe Xanthorhoini Genus Xanthorhoe Species Xanthorhoe labradorensis
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