Morley’s Final Catalogue: Scarce and local, though feeding in knapweed-heads. One at Aldeburgh in 1892 (Ctw); a few at Southwold in 1932 (Wir). Tuddenham in the Breck (Wrn) and 1925 at Worlington (Whit.).
Recent Status: Scarce in Suffolk. Possibly under-recorded
Life Style: The moth is single and sometimes double brooded. The larvae feed on the roots of Plantain species. Not only P. lanceolata. The larvae may hibernate.
Identification: There are three similar dark brown and white Endothenia species, E. gentianaeana, E. marginana and E. oblongana, that can be separated as follows. The hindwings of E. marginana males are white with a narrow dark border. The hindwings of E. marginana females are dark bordered becoming white at the base. The hindwings of E. gentianaeana are uniformly dark. The hindwings of E. oblongana pale slightly towards the base. E. gentianaeana is the largest at 15 to 19 mm wingspan. E. oblongana is the smallest at 11 to 15 mm wingspan. Both E. gentianaena and E. marginana have white on the top of the thorax and E. oblongana has little if any white. E. gentianaeana has more elongate wings and this results in the white band being significantly wider. The marks at the apex of E. marginana are closer to the main dark area across the white band compared with E. gentianaeana. The white band of E. oblongana is more heavily shaded than in the other species. Where these distinctions cannot be measured or seen then genitalia dissection must be carried out to determine the species. The difference in the genitalia is slight. More Info
Determination by Genitalia Examination (gen. det.) Required
Recorded in 12 (21%) of 58 10k Squares. First Recorded in 1892. Last Recorded in 2020. Additional Stats