Synonyms and other taxonomic changes
Platyptilia carduidactylus (Riley, 1869)
Bug Guide originally listed this as Platyptilia carduidactyla, which is now the most accepted synonym.
Identification
Adult: forewing brown with darker costal border that widens to form a triangle at top of postmedial line; subterminal line edged on both sides with white; hindwing gray with tiny black triangle on anal margin.
(1)
inner margin of forewing concave, flaring noticeably near tip; reddish shading usually present in subterminal area; forewing lacks "stippled effect" characteristic of Geranium Plume Moth (see See Also section below)
Larva: head black; body of early instars orange; black spots on last abdominal segment; final instar off-white, turning yellowish to pink at maturity
Range
Labrador to Virginia, west across Canada, south to Texas
(1)Season
adults fly April-September
(1)Food
larvae feed on thistles
(1) and all parts of artichokes
See Also
Geranium Plume Moth Amblyptilia pica forewing has several pale transverse lines along inner margin giving a "stippled effect", and usually lacks reddish shading in subterminal area
Paraplatyptilia (=Stenoptilodes) carolina has yellowish forewing whose inner margin doesn't flare noticeably near the tip
Print References
Covell, p. 391 & plate 58 #21
(1)Internet References
description of all life stages plus overview of biology, control methods, common name reference (U. of California at Davis)