Citrus Psylla(सीट्रस सिल्ला )

The adult psyllid is about four millimetres long with a fawn and brown mottled body and a light brown head. It is covered with a whitish, waxy secretion which makes it look dusty. The forewings are broadest at the back and have a dark edging around the periphery with a pale gap near the apex. The antennae are pale brown with black tips. These features distinguish it from the superficially similar African citrus psyllid. It typically adopts a head down, tail up posture as it sucks sap. Aphids are often also present on citrus and psyllids can be distinguished from them by being more active, jumping insects, whereas aphids are sedentary. In addition, the antennae of a psyllid has ten segments whereas those of aphids usually have four or six segments. Most aphids have cornicles on the abdomen and psyllids lack these.

The psyllid nymph moults five times. It is a yellowish-orange colour and has no abdominal spots. The wing pads are prominent, especially in the later instars.

The eggs are approximately 0.3 millimetres long, almond-shaped, thicker at the base and tapering toward the top. They are at first a pale colour but turn yellow and later orange before they hatch. The long axis is placed vertical to the surface of the leaf.