Stenoporpia separataria

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SeasonalityAdults fly in late June and early July. IdentificationThe mottled grey colour and pattern of the adults resembles tree bark. Black AM and PM lines, diffuse discal spot and median line. Similar to several other species in this group, including S. pulmonaria, Iridopsis larvaria and Anavitrinella pampinaria: S. separataria has a more crenulate, irregular PM line than pulmonaria, and flies earlier in the season; questionable identifications should be verified through genitalic dissection (see McGuffin 1977). I. Larvaria has a less elongated forewing shape and a broad dark band basal to black AM line which is faint or absent in pulmonaria. In Alberta, separataria is known only in the mountains from the Crowsnest Pass south, while larvaria is widespread. For genitalic differences, see McGuffin (1977). Adults of pampinaria have short male antennal pectinations (much longer in separataria) and a light contrasting band at the base of the abdomen that is absent in separataria.

Scientific Name Stenoporpia separataria Habitat Montane Douglas-fir forest. Seasonality Adults fly in late June and early July. Identification

The mottled grey colour and pattern of the adults resembles tree bark. Black AM and PM lines, diffuse discal spot and median line. Similar to several other species in this group, including S. pulmonaria, Iridopsis larvaria and Anavitrinella pampinaria: S. separataria has a more crenulate, irregular PM line than pulmonaria, and flies earlier in the season; questionable identifications should be verified through genitalic dissection (see McGuffin 1977). I. Larvaria has a less elongated forewing shape and a broad dark band basal to black AM line which is faint or absent in pulmonaria. In Alberta, separataria is known only in the mountains from the Crowsnest Pass south, while larvaria is widespread. For genitalic differences, see McGuffin (1977). Adults of pampinaria have short male antennal pectinations (much longer in separataria) and a light contrasting band at the base of the abdomen that is absent in separataria.

Life History McGuffin (1977) gives a brief description of the larva and pupa. Conservation Restricted distribution in AB, but widespread to the west. Diet Info Larvae feed on Douglas-fir (Pseudotsuga menziesii) (McGuffin 1977). Range Southwestern AB and southern BC south to AZ and NM (McGuffin 1977).

Page Citation

"Stenoporpia separataria, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4312. Accessed 27 Oct. 2021.

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Geometroidea Family Geometridae Subfamily Ennominae Tribe Boarmiini Genus Stenoporpia Species Stenoporpia separataria

This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Kingdom Animalia
- Phylum Arthropoda
  - Subphylum Chelicerata
    - Class Arachnida
  - Class Hexapoda
    - Subclass Insecta

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Species Details