Morley’s Final Catalogue: Not listed separately from D. flavidorsana.
Recent Status: Few records in Suffolk and probably under-recorded.
Life Style: A single brooded species that flies from June till August and comes to light. The moth can also be found on the foodplant. The larvae feed on Leucanthemum species. They feed on the flower head, in the stem and in the rootstock. They hibernate and pupate in the larval habitation.
Identification:Dichrorampha alpinana and D. flavidorsana are very similar. Only the males can be separated on characters of the adult moth with difficulty. The hindwings are brown and become slightly paler at the base for D. alpinana. In D. flavidorsana they are clearly paler at the base this being so for the females of both species. The costal fold of the male reaches to just over one third for D. alpinana and to between one third and one half for D. flavidorsana. Genitalia dissection is the only assured method of identifying these two species. More Info The moths are brightly coloured with a large yellow or orange dorsal patch, plumbeous striae from pale costal strigulae on the terminal half of the costa and with prominent black spots on the termen. There is prominent orange shading around the terminal spots, plumbeous striae and apex. There are black flecks associated with the plumbeous striae.
Verification Grade Comment: If recorded away from foodplant - Grade 4
Recorded in 19 (33%) of 58 10k Squares. First Recorded in 2000. Last Recorded in 2021. Additional Stats