Synonyms and other taxonomic changes
Megalographa biloba (Stephens, 1830)
Plusia biloba Stephens, 1830
Phytometra biloba ab. venezuelensis Strand, 1917
Autographa solida Ottolengui, 1902
phylogenetic sequence # 931209
The only species in this genus in North America.
forewing length 15-18 mm. (1)
Adult: forewing stigma very large, bilobed, silvery-white; silvery scales in lower half of reniform spot and AM line.
Specimen identified by DNA analysis:
Southern Canada except in the west, throughout most of the United States. (2)
Adults fly from March/April to October/November; probably all year in far south.
Larvae feed on alfalfa, barley, cabbage, cranesbill, dandelion, gladiolus, hedge-nettle, kidney-bean, larkspur, lettuce, plantain, sage, tobacco, vervain.
Larva; cocoon; pupa; adult:
In the northern parts of its range, is a migrant only (does not overwinter there).
A very widespread species; the type specimen was collected in Venezuela.
Eichlin, T.D. & H.B. Cunningham 1978. The Plusiinae (Lepidoptera: Noctuidae) of America north of Mexico, emphasizing genitalic and larval morphology. USDA Tech. Bulletin 1567: 1-122. (3)
Lafontaine, J.D. & R.W. Poole 1991. The Moths of America North of Mexico, Fascicle 25.1; p.95; pl.2.1-2 (4)
Ottolengui, R. 1902. Plusia
and allied genera with descriptions of new species. Jl. N.Y. Ent. Soc. 10(2): 64
, pl. 6, f. 5 (Synonym Autographa solida
Pogue, M.G. 2005. The Plusiinae (Lepidoptera: Noctuidae) of Great Smoky Mountains National Park. Zootaxa 1032: 1–28 (PDF
Powell, J.A. & P.A. Opler 2009. Moths of Western North America; p.278, pl.50.1 (1)
Strand, E. 1917. Archiv Naturg. 82 A (2): 49
(synonym Phytometra biloba
Moth Photographers Group
- range map, photos of living and pinned adults.
BOLD - Barcode of Life Data Systems
- species account with collection map and photos of pinned adults.
live adult image
(Jeremy Tatum, Butterflies and Moths of Southern Vancouver Island)
live adult images
(Lynn Scott, Ontario)
pinned adult image
and distribution (Matthew Barnes, Jamaica)
common name reference
plus larval foodplants and flight season (Ohio State U.)