Wingspan of 16-30 mm. Forewings grey with indistinct darker markings. Labial palps short and curved upwards.
Length of 15-20 mm. Body a white to pink colour with darker pinacula. Abdominal segment 8 has SD2 separated from spiracle by horizontal width of spiracle. Also the posterior bristle D2 is 2-2.5 times as long as anterior bristle D1 on abdominal segments 1 to 7.
White and sticky, laid amongst a suitable food source.
Cosmopolitan, but more common in tropical regions.
A wide variety of stored products including cereals, dried fruits, nuts and cocoa beans.
The larvae feed within silken tunnels, binding grain and other foodstuffs together. Signs of feeding include silk webbing, frass, caste skins and pupal cases.