Flowerhead-feeder
Guides
Isophrictis rudbeckiella
Isophrictis rudbeckiella is a gelechiid moth described by Bottimer in 1926. It is recorded from the south-central and midwestern United States, with a wingspan of 11.5–16 mm. The species is associated with Rudbeckia maxima, on which its larvae develop within flowerheads.
Paracantha gentilis
Paracantha gentilis is a tephritid fruit fly species described by Hering in 1940 from Wyoming specimens. The species has a complex taxonomic history, with several taxa described by Malloch in 1941 (mimetica, mimetica elongata, mexicana) and Aczél in 1953 (sobrina) later synonymized under P. gentilis when wing pattern variation proved continuous rather than discrete. It is the first Tephritidae species in which the median oral lobe of larvae was described, a character now known to be shared by all non-frugivorous Tephritinae. The species exhibits a bivoltine life cycle with distinct behavioral and morphological adaptations for exploiting Cirsium thistle flowerheads.