Hoplocampa testudinea (Klug, 1816)
european apple sawfly
Malus domestica, Loenen ge © Arnold Grosscurt
oviposition in a young fruit, just below the calice segments. The young larva makes a gallery just below the epidermis. When the apple grows the epidermis covering the gallery ruptures and an elongated scar is formed. After several days the larva moves to a nearby fruit and bores a gallery down to the ovary, where the seeds are devoured; this is repeated several times. Scarred apples remain in the three, the later bored ones fall off. Overwintering and subsequent pupation in the soil.
galleries are made in end-April, early May.
all Benelux countries (Fauna Europaea, 2015).
distribution within Europe
almost all of Europe, but not in Ireland and the Mediterranean Region (Fauna Europaea, 2015).
white, head and anal segment shining black
the apple sawfly is an important orchard pest. The frass is moist and has a characteristic smell, distinguishing the damage from that by the codling moth, Cydia pomonella, with dry and odourless frass.
Miles (1932a), Petherbridge (1928a), Pschorn-Walcher & Altenhofer (2000a, 2006a), Robbins (1991a), Roques, Cleary, Matsiakh & Eschem (2017a), Vincent, Babendreier, Świergiel ao (2019a).