Recent Status: Originally an adventive species in the UK in the early 1900s and has spread to become widespread and common in places. Common is Suffolk.
Life Style: A single brooded species found in late summer and early autumn, The larvae are polyphagous, primarily vegetarian. They may rest in a silken tube and pupate in a cocoon. The larvae hibernate.
Identification: There are two common species of Blastobasis recorded in Suffolk. B. adustella is darker and smaller than B. lacticolella. Both species at rest from above show a broad forward pointing ‘V’ mark at one third, dots or patch at two thirds and a sub-terminal fascia. There are other small Blastobasis species in the UK yet to be recorded in Suffolk. If any are suspected the identification must be by genitalia dissection.
Recorded in 42 (72%) of 58 10k Squares. First Recorded in 1959. Last Recorded in 2020. Additional Stats