| Acleris hastiana (Linnaeus, 1758) |
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Scientific name: Acleris hastiana (Linnaeus, 1758) Common name: French name: Acléride des Saules Order: Lepidoptera Suborder: Microlepidoptera Family: Tortricidae Subfamily: Tortricinae Wingspan: 18-22 mm. Biotope: Any environment with the presence of host plants. Geographic area: Europe, northern Iran, Kazakhstan, central Siberia, China, North America. Flight time: June to July for the first generation, the second generation emerges in August, overwinters and reappears early April. Number of generations : 2 (1 north of the distribution area). Caterpillar: Green with a brown head, it grows in a curled willow leaf. Host plant: Mainly on Willows (Salix spp.) and mainly on the Creeping Willow (Salix repens) and the Eared Willow (Salix aurita). |
Acleris hastiana is a highly variable Leafroller Moth that is found in more than a dozen forms. Identification is usually done by comparison with known forms from different photographic galleries considering the following characteristics: The costal edge of the forewing is almost straight although very slightly concave on the second half of the wing. The fore wing is covered with small tufts of scales. Acleris umbrana has two black spots on the tornus. Acleris hastiana is missing these two spots. In addition, the costal edge of Acleris umbrana is not at all concave on the second half of the wing. The Rufous-margined Button Moth (Acleris cristana) has an erected tuft of scales in the discal area of the forewing. The Perth Button Moth (Acleris abietana) has numerous small tufts of black scales raised on its forewings. |
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No black spots at the tornus, no erected tuft of scales in the discal area nor small tufts of black scales, I think we have Acleris hastiana here. Given the observation date, I think that this specimen is just emerging out of hibernation. |
André Bon April 2025