Species Details

Syngrapha viridisigma

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

Common NameGreen-marked Looper SeasonalityAdults have been collected in Alberta from early July through early September. IdentificationA medium-size (3.8-4.2 cm wingspan) moth with dark bluish ash grey forewings and brown hindwings. Forewings are dark slate grey with a dull metallic silvery cast, finely mottled by darker black and lighter grey scales. The stigma is a green-gold V with a prominent distal satellite spot. Hindwings are rich dark brown shading to a wide sooty brown terminal band. The antennae are simple and the sexes are alike. Very similar to the much rarer S. selecta, which averages a bit smaller and has paler brown hindwings that contrasts more with the dark terminal band. Genitalia of lighter specimens should be examined for positive identification. The valve of the male is broad and rounded in viridisigma, with a small finger-like clasper extending less than half way across the valve and two cornuti in the vesica (a tapered valve in selecta, with a larger, triangular clasper extending to the dorsal margin of the valve, and a single cornutus). Females of selecta have a large sclerotized caudal process of the ostium bursa, which is lacking in viridisigma.

Scientific Name Syngrapha viridisigma Common Name Green-marked Looper Habitat Coniferous forests. Seasonality Adults have been collected in Alberta from early July through early September. Identification
A medium-size (3.8-4.2 cm wingspan) moth with dark bluish ash grey forewings and brown hindwings. Forewings are dark slate grey with a dull metallic silvery cast, finely mottled by darker black and lighter grey…
A medium-size (3.8-4.2 cm wingspan) moth with dark bluish ash grey forewings and brown hindwings. Forewings are dark slate grey with a dull metallic silvery cast, finely mottled by darker black and lighter grey scales. The stigma is a green-gold V with a prominent distal satellite spot. Hindwings are rich dark brown shading to a wide sooty brown terminal band. The antennae are simple and the sexes are alike. Very similar to the much rarer S. selecta, which averages a bit smaller and has paler brown hindwings that contrasts more with the dark terminal band. Genitalia of lighter specimens should be examined for positive identification. The valve of the male is broad and rounded in viridisigma, with a small finger-like clasper extending less than half way across the valve and two cornuti in the vesica (a tapered valve in selecta, with a larger, triangular clasper extending to the dorsal margin of the valve, and a single cornutus). Females of selecta have a large sclerotized caudal process of the ostium bursa, which is lacking in viridisigma.
Life History The adults are nocturnal and come to light. The larvae are solitary defoliators of conifers, and are the overwintering stage. There is one generation per year. Conservation A common widespread species; no concerns. Diet Info
The larvae feed on a variety of coniferous trees, including spruce (Picea), fir (Abies), Douglas-fir (Pseudotsuga), pine (Pinus), tamarack (Larix), and cedar (Thuja). However, spruces and firs are by far the most…
The larvae feed on a variety of coniferous trees, including spruce (Picea), fir (Abies), Douglas-fir (Pseudotsuga), pine (Pinus), tamarack (Larix), and cedar (Thuja). However, spruces and firs are by far the most frequently recorded hosts (Prentice, 1962).
Range
Newfoundland west across the boreal forest to Alaska, south in the east to Massachusetts, New York and Michigan and in the west to southern Oregon. In the Rocky Mountains they occur south to Arizona and New Mexico.…
Newfoundland west across the boreal forest to Alaska, south in the east to Massachusetts, New York and Michigan and in the west to southern Oregon. In the Rocky Mountains they occur south to Arizona and New Mexico. In Alberta, viridisigma is found throughout the Boreal forest, foothills and mountain regions, and in the Cypress Hills.

Citation

Page Citation for Syngrapha viridisigma

Page Citation

"Syngrapha viridisigma, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-1156. Accessed 29 Nov. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Noctuidae Subfamily Plusiinae Genus Syngrapha Species Syngrapha viridisigma
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