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Species Isophrictis similiella - Hodges#1702

1702  - Isophrictis similiella Isophrictis similiella Gelechiidae, dorsal - Isophrictis similiella ?Gelechiidae, lateral - Isophrictis similiella
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Gelechioidea (Twirler Moths and kin)
Family Gelechiidae (Twirler Moths)
Subfamily Anomologinae
Genus Isophrictis
Species similiella (Isophrictis similiella - Hodges#1702)
Hodges Number
Synonyms and other taxonomic changes
Isophrictis similiella (Chambers, 1872)
Gelechia similiella Chambers, 1872
wingspan 7/16" (~11 mm) (Chambers, 1872)
Apr - Sept BugGuide data
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.