Recent Status: A rare salt-marsh species in Suffolk.
Life Style: A single brooded species flying at dusk. It can be found during June and July. The larvae feed on Aster tripolium. They spin the flowers of the foodplant together as refuge. They hibernate in a cocoon on the ground in which they pupate.
Identification:Eucosma rubescana has narrower more elongate wings than the two other Suffolk salt-marsh species, E. tripoliana and E. lacteana. The costal strigulae shapes of each are distinctive. The species is most similar to E. conterminana, though again the costal strigulae of each are distinctive and E. rubescana lacks the clearly defined proximal edge to the dorsal patch. If necessary they can be separated with difficulty by the genitalia of the male and more easily of the female. E. rubescana shows a strong grey speckled band on the termen.
Determination by Genitalia Examination (gen. det.) Required
Recorded in 1 (2%) of 58 10k Squares. First Recorded in 2009. Last Recorded in 2019. Additional Stats