Posted by Carnifex on 04-10-2021 18:59
#1
I reckon it is a dipteran species which made this peculiar pattern. Opening on the underside of the leaf

Edited by Carnifex on 03-11-2021 23:02
Posted by von Tschirnhaus on 03-11-2021 18:42
#2
Agromyzidae: probably leaf mine of Liriomyza strigata (Meigen, 1830), larva follows the leaf ribs and hides along the stem during day time. It could also be Liriomyza tropaeoli Guglya, 2021 (known from Ukraine) if that is really a valid species.