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Species Phigalia strigataria - Small Phigalia - Hodges#6660

Geometridae, larva, wandering perhaps - Phigalia strigataria small phigalia caterpillar - Phigalia strigataria Pennsylvania Moth  - Phigalia strigataria Geometridae: Phigalia strigataria - Phigalia strigataria - female Geometrid cat on Sawtooth Oak - Phigalia strigataria Phigalia denticulata - Phigalia strigataria - male Unknown Moth - Phigalia strigataria - male Phigalia strigataria - male
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Bistonini
Genus Phigalia
Species strigataria (Small Phigalia - Hodges#6660)
Hodges Number
Synonyms and other taxonomic changes
Phigalia strigataria (Minot) (1)
Anisopteryx strigataria Minot 1869
Phigalia has 4 species north of Mexico. (2)
forewing length 14 to 18 mm, females flightless with drastically reduced wings
larva to 3 cm (3)
e. NA - Map (2)
woodlands and forests (3)
Dec-June, true winter moth (2)(3)
elm, oak, chestnut, willow, hickory, hazel, sweet gum, etc. (3)
Life Cycle
Larva, pupal (overwintering) shell, adult female, adult male
Often confused with Phigalia denticulata; Can be separated by the following:
In denticulata, a very distinct dark “tooth” is located on the M1 vein where it comes off of the discal cell. This is seen as the “3rd tooth” from the costa, evenly spaced along the PM line of denticulata. In strigataria, this marking is either absent (giving the appearance of a gap between two pairs of “teeth”) or greatly reduced to only being a diffuse black spot. See following image for visual.
See Also
P. denticulata. Forewing is paler, with less dark scaling than in P. denticulata, and is faintly olivaceous gray in color. The t. p. and extradiscal lines are straighter, and are not as outwardly dentate on the veins as those of P. denticulata
Works Cited
1.A revision of the New World Bistonini, (Lepidoptera, Geometridae).
Frederick H. Rindge. 1975. American Museum of Natural History 156(2):.
2.North American Moth Photographers Group
3.Caterpillars of Eastern North America
David L. Wagner. 2005. Princeton University Press.