What physical quality makes the adult Khapra beetle appear dull instead of shiny?

Answer

Presence of a fine, reddish-brown fuzz or dense, short hairs

The body is covered in a fine, reddish-brown fuzz or dense, short hairs which results in a dull appearance, helping differentiate it from some smooth-shelled pests.

What physical quality makes the adult Khapra beetle appear dull instead of shiny?
insectidentificationbeetlepest