White Plume Moth

Family Pterophoridae — the plume moths — contains about 1,500 species worldwide and is one of the most morphologically extraordinary moth families in the world. The defining feature is the wing structure: each forewing is divided lengthwise into TWO long, narrow, feather-like 'plumes' separated by a deep V-shaped cleft, and each hindwing is divided into THREE plumes. The total wing surface is therefore composed of 10 separate feather-like elements (2 + 3 per side, both sides). When the moth is at rest, she holds the plumes folded tightly together against the abdomen, with the wings projecting out to either side perpendicular to the body — forming a distinctive T-shape silhouette that closely resembles a small dried twig with feathery ends. The cryptic posture is so effective that plume moths at rest are essentially invisible against twigs and dried plant stems. In flight, the plumes spread apart and the moth resembles a tiny floating piece of fluff or a small snowflake — the white plume moth (Pterophorus pentadactyla) is the most spectacular European species, pure white throughout, drifting through evening summer meadows like wind-blown puffs of cotton. Wingspan of P. pentadactyla is 26-35 mm. Caterpillars feed on bindweed (Convolvulus species) and a few other low herbaceous host plants, and develop into the adult through a normal Lepidoptera life cycle — but the plume moth wing development inside the pupa is one of the more dramatic transformations in the order, with the wings emerging tightly folded and unfurling into the multi-plume structure over the first hours of adult life. The species is widespread across Europe and into western Asia.