| Yellow Underwinged Thick-horn (Esperia sulphurella (Fabricius, 1775)) |
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Scientific name: Esperia sulphurella (Fabricius, 1775) Common name: Yellow Underwinged Thick-horn French name: Dasycère soufrée Order: Lepidoptera Suborder: Microlepidoptera Family: Oecophoridae Subfamily: Oecophorinae Wingspan: 12-16 mm. Biotope: Gardens, parks, hedgerows, open woodlands. Geographic area: Europe. Flight time: May to July. Number of generations : 1 Caterpillar: The rather slender body is a brownish grey colour with a translucent aspect. The head is darker. Host plant: Caterpillars grow in decaying wood, dead wood or rotting wood, never in healthy wood. |
The ground colour of the Yellow Underwinged Thick-horn's fore wings is chocolate brown with scattered yellow scales. You can distinguish a yellow stripe close to the costal edge and another one on the middle of the wing in the basal part. I have read that these stripes are much more distinct on females than on males. There is a large triangle-shaped yellow spot on the costal edge, close to the apex, and another smaller one, on the opposite, on the inner edge. The palpi and the lateral sides of the head are an orange colour. The black antennae are pointing forwards and show a white mark located at two thirds of their length. |
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It is very easy to identify the Yellow Underwinged Thick-horn. There is no possible confusion. |
André Bon November 2015