Species Details

Gluphisia avimacula

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

Common NameAvimacula Pebble SeasonalityThe adults are on the wing in late May-early June. IdentificationA medium-size (3.3-4.0 cm. wingspans) grey and grey-brown moth. The forewing is obscurely banded, with a small yellow-gold spot near the wing base and another at the reniform. The hindwing is dark brown. Most easily confused with G. lintneri, which is paler, especially on the hindwings, and which lacks the gold spots on the forewings. The antennae are pectinate (broadly in male, narrowly in female). The three large species of Gluphisia can also be separated by male genitalic characters, notably the shape of the juxta, transtilla and uncus. In avimacula, the uncus is moderately excavated, the lobes broadly acute, the lobes of the transtilla are long and acute, the juxta broad and widely excavated with the lobes narrow and rounded.

Scientific Name Gluphisia avimacula Common Name Avimacula Pebble Habitat Poplar and mixedwood forest with poplar. Seasonality The adults are on the wing in late May-early June. Identification
A medium-size (3.3-4.0 cm. wingspans) grey and grey-brown moth. The forewing is obscurely banded, with a small yellow-gold spot near the wing base and another at the reniform. The hindwing is dark brown. Most easily…
A medium-size (3.3-4.0 cm. wingspans) grey and grey-brown moth. The forewing is obscurely banded, with a small yellow-gold spot near the wing base and another at the reniform. The hindwing is dark brown. Most easily confused with G. lintneri, which is paler, especially on the hindwings, and which lacks the gold spots on the forewings. The antennae are pectinate (broadly in male, narrowly in female). The three large species of Gluphisia can also be separated by male genitalic characters, notably the shape of the juxta, transtilla and uncus. In avimacula, the uncus is moderately excavated, the lobes broadly acute, the lobes of the transtilla are long and acute, the juxta broad and widely excavated with the lobes narrow and rounded.
Life History
The Avimacula Pebble emerges from the pupae in the spring a week or two after Lintner's Pebble. The adults are nocturnal and come to light. The larvae are solitary defoliators, and they overwinter as pupae. There is…
The Avimacula Pebble emerges from the pupae in the spring a week or two after Lintner's Pebble. The adults are nocturnal and come to light. The larvae are solitary defoliators, and they overwinter as pupae. There is a single brood annually.
Conservation Very uncommon in Alberta, at the northwestern edge of their range. Diet Info No data. However, most likely a poplar feeder like the other members of the genus. Range Found across much of the wooded portions of southern Canada, from Nova Scotia west to east central Alberta (Lac la Biche), south to New York.

Citation

Page Citation for Gluphisia avimacula

Page Citation

"Gluphisia avimacula, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-498. Accessed 27 Oct. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Notodontidae Genus Gluphisia Species Gluphisia avimacula
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