Synonyms and other taxonomic changes
Isophrictis similiella (Chambers, 1872)
Gelechia similiella Chambers, 1872
Size
wingspan 7/16" (~11 mm) (Chambers, 1872)
Life Cycle
Larvae bore in the receptacle of sunflower (Helianthus) and black-eyed susan (Rudbeckia hirta) flowerheads. They burrow down the stem up to three inches to pupate, chewing an exit hole before pupating. (Braun 1921)
Black-eyed susan (
Rudbeckia hirta) may not be a host plant for this species. Bottimer (1926) in his description of
Isophrictis rudbeckiella, a species separated by genitalia, states "The species recorded by Braun as
Isophrictis similiella Chambers, is presumably referable to the present species."
See Also
Isophrictis rudbeckiella is separated by genitalia (Bottimer 1926) or DNA. "Both species have the harpe of the male genitalia divided, but in the new species [
rudbeckiella] it is nearly twice as long as in
similiella." - Bottimer (1926)
Print References
Bottimer, L.J. 1926. Notes on some Lepidoptera from eastern Texas.
Journal of agricultural research.
33(9): 808; fig 2, E (gen. - ♂) (
I. similiella); 810 (
I. rudbeckiella).
Braun, A.F. 1921. Notes on microlepidoptera with descriptions of new species.
Entomological news, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia. 32:
8 (presumably
I. rudbeckiella, see Bottimer, 1926).
Chambers, V.T. 1872. Micro-Lepidoptera.
The Canadian entomologist. 4:
193.