Carpenter and Leopard Moths (Cossidae) is a group of butterflies of which only three different species occur in the Netherlands. They are very beautiful species and a pleasure to see when you lure them on the white sheet with a special lamp. The wings are elongated and are held vertically against the body in resting position. They are fairly large moths ranging from 15-42mm. The fact that the caterpillars live in wood does justice the name “carpenters”. That the caterpillars hibernate twice up to four times before pupating was new to me.
Goat Moth – 2017 (NL)
The Goat Moth (Cossus cossus) is a beautiful large appearance because of the drawing on the chest piece. It seems as if you see the face of a sleeping owl because of the white spot and the two black stripes underneath. Maybe others see it more like a goat. The upper side of the wings looks like tree bark with their brown tones and thin black small lines. The males often are attracted to light, but the females are not so easy to lure. The flying period is in one generation from May to September and the wingspan is 64-84mm. Host plant: oak, willow, birches and poplar. Dutch name: Wilgenhoutrups. Frisian name: Wylgehoutflinter.
Leopard Moth – 2017 (NL)
The Leopard Moth (Zeuzera pyrina), also called mourning moth, lives up to its English name more than the Dutch one. The wings are white translucent with black spots. On the white body, you can clearly see six black spots on the chest piece in two parallel rows. The wing is transparent and you can clearly see the veins that are coloured brown. When I saw this moth attracted to the UV-light, I was really surprised that this moth flies around in my garden at night. The wingspan is 44-70mm. The flying period is in one generation from May to September. Host plant: Blackthorn, Plum, Hawthorn, Apple, Pear, private, Ash, elms, oaks and Beech. Dutch name: Gestippelde houtvlinder. Frisian name: Stippelflinter.
Reed Leopard – 2020 (NL)
With the Reed Leopard (Phragmataecia castaneae) I have completed all family species that occur in the Netherlands. The most special thing about this leopard moth is that the abdomen protrudes far behind the rounded wings when it is in the resting position. This is more extreme in the female. On the slightly translucent light yellow wings, there is only a black speckling. The wingspan is 30-46mm and the flight period runs from May to August in one generation. Host plant: Common Reed. English name: Reed Leopard. Frisian name: Reidloaihoars.