Last modified: April 19, 2020, 6:09 p.m.
In 1988, the first Belgian specimens of this species were found in AN. A local and very rare species in our country.
This species is pale ochreous but the base of the forewings is somewhat white while the apical area, on the contrary, is more yellowish-brown.
Its wingspan is 12–14 mm.
The antennae are alternately ringed light brown white till the tip.
The pale rose-brown caterpillar has a light-brown head.
The case, constructed by the caterpillar, is very slender and small and measures up to 7–8 mm. The anal area is strikingly paler than the rest of the case. The mouth angle is 0–13°.
See also bladmineerders.be.
The larvae feed on the flowers and the seeds of the hostplant. They are most easily found in August and September.
Fully fed, they attach themselves to a stem of the hostplant to hibernate.
The adults fly in one generation a year: from June till early August.
C. hydrolapathella lives monophagously on Rumex hydrolapathum.