Synonyms and other taxonomic changes
(Walker, 1858) (1)
Amyna axis of authors (not Guenée 1852) (Perigea)
Amyna flaviguttata (Walker, 1858) (Celaena)
Amyna orbica (Morrison, 1874) (Segetia)
Amyna tecta (Grote, 1876) (Chytoryza)
Amyna octo of authors (not Guenée, 1852) (Perigea)
Phylogenetic sequence # 931253
Explanation of Names
Common name "Eight-Spot" from the synonym Perigea octo derived from Greek "okta" meaning eight; refers to the "figure 8" spot on the forewing
One of two species in this genus in America north of Mexico.(2)
Wingspan 20-25 mm (Covell, 1984).(3)
Adult: forewing variably reddish-brown to dark brown with indistinct black mottling and lines in basal half; reniform spot shaped like an "8", the lower half either solid white to orangish or filled with ground color, and the upper half with broken white outline; six small pale spots along costa; PM line black, toothed, sinuate; terminal line checkered with dark and light spots; fringe dark gray to blackish; hindwing dark brownish-gray, darker toward outer margin
Resident worldwide in the tropics and subtropics, migrating north each year in late summer and fall. Fairly common in the south from Florida to Arizona; regular migrant to mideastern states, and rarely as far as Wisconsin, Ontario, and Quebec.
Fields, waste places, dry areas; adults are nocturnal and come to light.
Adults fly from August to October.
Poole (1989) lists the larval host as lambsquarters
HOSTS database (4)
spp.) and balloonvine
spp.) in our area. A variety of hosts are used throughout the world including plants from Leguminosae, Amaranthaceae, Tiliaceae, Compositae, Malvaceae, Euphorbiaceae, Solanaceae, Chenopodiaceae, and Sapindaceae.
forewing has a yellow fringe, falcate outer margin, small pale patch near apex, and yellowish shading in lower basal half of wing (compare images
of both species at CBIF). Adults, especially those lacking a pale reniform spot, may be mistaken for a pyralid or crambid moth due to small size and habit of resting with wings held tent-like over abdomen.
Boisduval, J. A. & A. Guenée 1852. Nocuilites 1. Histoire naturelle des insectes: species général des Lépidoptères 5: 407
Covell Jr., C. V. 1984. A field guide to the moths of eastern North America. P.148, pl.28(22) (5)
Hampson, G. F. 1910. Noctuidae. Catalogue of Lepidoptera Phalaenae in the British Museum 10: 408
pinned adult image
with white reniform spot (CBIF)
pinned adult image
with pale orangish reniform spot (James Adams, Dalton State College, Georgia)
plus world distribution map, synonyms, links to images, references (Markku Savela, FUNET)
common name reference
and flight season (Ohio State U.)
distribution in Canada
Ontario and Quebec only (U. of Alberta, using CBIF data)