Last modified: Jan. 14, 2020, 2:28 p.m.
A very rare species in Belgium, only known from NA and WV.
As with many members of this family, studying the genitalia is necessary. Females however showing white abdomen underside with dark last segment.
See also bladmineerders.be
In May, the larva spins a web almost completely covering the foodplant and extending into the ground. Pupation in June in a cocoon in the ground.
The adults like to rest during daytime on yellow flowers.
One generation a year: July.
Xerothermic, grassy areas on chalk or limestone, but also on sandy soil.