A small white or grey clam-shaped scale insect that appears as a smaller version of the adult when immature, generally less than 1mm in diameter. The adult is a larger, mollusc like scale insect with an armoured body up to 2mm in diameter. As they mature, the couch grass scale often turns cream to pink in colour. Usually found in congregations around the nodes and crown where they become easier to observe.
Biology and Lifecycle
Little is known about the lifecycle of this species, though it is thought to take 10-14 days for completion of the lifecycle from egg lay to maturity.