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
See the identification key for
Platyptiliini.
See the species accounts in Hunt & Matthews (2020)
(2), Gielis (2006)
(3), Landry (1987)
(4), and Barnes & Lindsey (1921)
(5).
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, Texas
(6), and west across Canada to British Columbia and south to California
(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)
Specimen image from Essig Museum at UC Berkeley