Shore fly
damage, and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance of Shore fly [...] singly and are bean-shaped. A first instar larva is translucent white. Second instar larvae are brownish, less translucent and their body is cylindrical. [...] The larvae are found in the top layer of damp soil, where they also pupate. The adult shore fly is black, about 4 to 5 mm long, and stout with short antennae