Females possess high fecundity, averaging 30 eggs per batch. These traits combine to produce high predatory efficiency on apple aphid. The twospotted lady beetle overwinters as adults in small aggregations, averaging about 3 beetles per cluster, in tree crevices, house walls, etc. Beetles prefer south-facing walls or crevices. The color pattern is highly variable in Europe, but not in North America.
Adults have an oval shape, with the head often hidden past the eyes.
There is white on the edge of the pronotum and a pale band between the eyes. This species has a round shape. The head, like that of the twospotted lady beetle, is largely hidden by the pronotum. The head of the sevenspotted lady beetle is black with two separated white spots. The convergent lady beetle, Hippodamia convergens Guerin, is a common coccinellid in our area, but prefers field crops and low-growing vegetation.