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Species Phragmatobia assimilans - Large Ruby Tiger Moth - Hodges#8158

Large Ruby Tiger Moth - Phragmatobia assimilans Warwick moth 5/17 - Phragmatobia assimilans Large Ruby Tiger  - Phragmatobia assimilans Large Ruby Tiger  - Phragmatobia assimilans Phragmatobia assimilans, large ruby tiger moth - Phragmatobia assimilans Phragmatobia assimilans, large ruby tiger moth - Phragmatobia assimilans Moth - Phragmatobia assimilans Moth - Phragmatobia assimilans
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Erebidae
Subfamily Arctiinae (Tiger and Lichen Moths)
Tribe Arctiini (Tiger Moths)
Subtribe Spilosomina
Genus Phragmatobia
Species assimilans (Large Ruby Tiger Moth - Hodges#8158)
Hodges Number
Synonyms and other taxonomic changes
Phragmatobia assimilans Walker, 1855
Phylogenetic sequence # 930334
Lafontaine & Schmidt (2010) included three species of the genus Phragmatobia in America north of Mexico. (1)
Wingspan 35-42 mm.
Adult: forewing opaque dark reddish-brown with dark speckling and faint black AM, PM, and ST lines; female larger and darker with more prominent forewing pattern; hindwing reddish or pinkish with broad black terminal band but no black shading along costa.
[adapted from description by Charles Covell]
Coast to coast in northern United States and southern Canada
Moth Photographers Group - large map with some distribution data.
Moist open habitats in deciduous and mixed forest.
Adults fly from late April to August. (2)
Larvae feed on leaves of Balsam Poplar (Populus balsamifera), raspberry, White Birch (Betula papyrifera) - and have been reared on dandelion and plantain. Also Apocynaceae (HOSTS).
Life Cycle
One generation per year.
See Also
Ruby Tiger Moth (P. fuliginosa) has no lines on forewings

Lined Ruby Tiger Moth (P. lineata) has translucent forewings with less speckling

(compare images of all three species)
Print References
Newman, J.H. & J.P. Donahue 1966. The genus Phragmatobia in North America, with a description of a new species (Lepidoptera: Arctiidae). The Michigan Entomologist, 1(2).(3)
Powell, J.A. & P.A. Opler, 2009. Moths of Western North America. University of California Press, pl. 47, fig. 10; p. 269.(4)
Internet References
pinned adult image plus habitat, flight season, description, food plants, distribution (Strickland Entomological Museum, U. of Alberta)