Morley’s Final Catalogue: Not listed.

Recent Status: Isophrictis anthemidella, a species very similar to I. striatella was confirmed as a British species from specimens captured in Kent during 2020, Entomologist’s Rec. J. Var. 134: 7-15. It is now recorded in Suffolk. Dissection will now be required to determine Isophrictis to species level.

Life Style: A single brooded species flying during July and August and coming to light. The larvae feed in the flower and seed heads of Tanacetum vulgare. They hibernate fully fed in the seed-head, stem or in detritus on the ground and pupate in the spring.

Identification: A small narrow winged species with a silver line from the base to about one half, a black dot centrally around three quarters and discrete white markings in the terminal quarter. The palps have long forward pointing scales. The difference from I. anthemidella on superficial appearance is slight. I. striatella is smaller on average, tends to be a darker reddish brown rather than greyish brown and lacks grey scales above the silver line that emanates from the wing base. The genitalia of the two species differ. Images for those of I. striatella can be found at the following link More Info

Verification Grade Comment: Dissection required to seperate from Isophrictis anthemidella.

	Determination by Genitalia Examination (gen. det.) Required

Recorded in 9 (16%) of 58 10k Squares. First Recorded in 2004. Last Recorded in 2023. Additional Stats

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