About Bryotropha terrella (Denis & Schiffermüller), 1775
Bryotropha terrella is a moth species in the family Gelechiidae, first described by Denis & Schiffermüller in 1775. It is the designated type species of the genus Bryotropha, and it is found across Europe. This moth has a wingspan measuring 14–16 mm. Its forewings are highly variable in base ground colour, ranging from dark fuscous, and various shades of brown and grey, to the pale cream colour seen in coastal forms. The base of the forewing costa is dark shining bronzy with a purplish tinge. Individuals may show the characteristic 'bryotropha' spots, a sub-terminal fascia, and spots around the wing tip, or may be unicolorous. The hindwings are grey in colour. Certain identification of this species requires microscopic examination of the genitalia. Adult moths are active on the wing between May and August, with the flight period varying based on location. The larvae feed on a range of mosses and grasses, specifically including Rhytidiadelphus squarrosus, Syntrichia ruraliformis, Hypnum jutlandicum, Calliergonella cuspidata, and Agrostis capillaris.
