Last modified: June 12, 2019, 12:26 p.m.
This is a not so common species in Belgium but it has been observed more frequently after 2004.
This species has whitish forewings speckled with dark grey dots and usually carries a notable blackish spot at around two-thirds of the wing length (notice the English name).
The wingspan is 12–15 mm.
The antennae are alternately ringed blackish white till the tip.
The first one and a half year the small case is pistol-shaped. Subsequently, the caterpillar builds a long straight case that measures up to 10 mm.
The mouth angle is 90°.
See also bladmineerders.be.
It takes the larva two years to develop. Initially, the larva lives inside a small pistol-case for the first one and a half year. Only in the second spring it builds a long straight case. These cases reach their maximal size from May on. Pupation takes place inside that case, attached to the upper surface of a leaf or a twig.
Occasionally, the adults come to light.
The adults fly in one generation a year from the end of June till well in August.
The larvae are found on a whole range of Rosaceae such as Crataegus, Malus, Pyrus, Mespilus, Prunus, Sorbus, Cotoneaster, Cydonia and Chaenomeles.