Synonyms and other taxonomic changes
, hyperlinked text leads to cited reference:
Chambers 1876, Canad. Ent., 8:104
(typesetting error?) Chambers 1878, Bull. U.S. Geol. Survey, 4:127
; Walsingham 1890, Insect Life, 2:284
(error) Walsingham 1880, Proc. Zool. Soc. Lond. :78
Walsingham 1880, Proc. Zool. Soc. Lond. :80
, pl. 11
Adela flammeella Meyrick 1912, Lepid. Cat. 6:10
Information below summarized from (1)(2)
Adults - both sexes generally dark coppery-bronze, forewings with dark fringe, hindwings metallic purple:
Males typically have 3 to 6 cream-colored spots on fore wing...two equally spaced along leading edge, and one on hind edge...sometimes with 1 more near the apex, and 2 smaller dots on each wing edge near the base. The 3 spot form was illustrated in Fig. 5 of Walsingham
. Males also have larger eyes (diameter about 3 times distance between eyes on top of head) and longer antennae ( > 3 times wing length);
Females can have 4 or fewer vague spots, the case of 2 spots is illustrated in Fig. 6 of Walsingham
. They also have much smaller eyes and antenna about 1.5 times forewing length.
Individuals can vary, with both sexes often having a reduced number and/or size of wing spots from those described above.
Southern Washington (Columbia River region), southward (though records lacking in Oregon) through foothills and interior valleys of cismontane California, below 2000' elevation.(1)
Associated with owl's clover Orthocarpus
, some species now in Castilleja (2)
Adela thorpella is similarly colored, typically less conspicuously spotted, has a paler whitish wing fringe, and is smaller with shorter antennae (about 2.5 times wing length in males, 1.3 in females).
Adela oplerella is smaller & darker, males and females both have small eyes, antenna of males only slightly longer than wing length, antenna of females shorter than wing length. Known only from a few populations in San Francisco Bay area, associated with serpentine grasslands.
Reference Plate for female A. flammeusella
from "Moths of Western North America" by Powell & Opler(2)