Which phrase is used to describe the physical appearance of the flightless female Winter Moth's abdomen?

Answer

Quite plump or possessing a "fat abdomen"

The sedentary, flightless female Winter Moth possesses a distinct physical appearance compared to her winged mate. Her body is generally characterized as brownish-grey or mottled grey, but a key feature noted in descriptions is the appearance of her abdomen. Due to the reproductive investment required, the female's abdomen is frequently described as being quite plump, or possessing what observers refer to as a 'fat abdomen.' This physical characteristic is part of the overall cryptic, ground-dwelling morphology that contrasts sharply with the aerial male.

Which phrase is used to describe the physical appearance of the flightless female Winter Moth's abdomen?
insectmothappearancecharacteristicwing