Most coccinellids as adults. In "Harmonia axyridis", eggs hatch in 3–4 days from clutches numbering from a few to several dozen. Depending on the supply of aphids, the larvae pass through four instars over 10–14 days, after which pupation occurs. After several days, the adults become reproductively active and are able to reproduce again, though not late in the season. On average, the lifespan on the lady beetle is 1-2 years. 