The primary part of antennae and legs (with the exception of the coxa) are a reddish yellow.

[3] Torymus druparum is a common parasitoid on seeds of apples, pears, Crataegus, and Sorbus.

T. druparum usually spends two or three winters in the larval state, though rarely emerging during the first spring as well.

The only visible effect of infestation is caused by the puncturing of the skin by the ovipositor, appearing as a minute scar in a small dimple after a few days.

It is also common to mistake infestating by other species (such as Lygidea mendax or Heterocordylus malinus) as being caused by T. druparum.