Life cycle of Colorado Potato Beetle (Leptinotarsa-decemlineata)
Here is life cycle of colorado potato beetle (Leptinotarsa-decemlineata) picture with brave explanation.
Egg Stage. The insect overwinters in the adult stage a few inches beneath the soil surface. In the spring the one-half inch beetle emerges from the soil and searches for a suitable host. Once a suitable host has been located, the beetles feed, mate and lay their eggs on these plants. The yellowish-orange eggs (Figure No 1) are deposited on the undersides of leaves of host plants and nearby weeds. Each egg is about 1.8 mm long. Over a 4 – 5 week period, each female beetle lays eggs in batches of 20 – 35. A total of 400 – 600 eggs may be deposited by one female.
Larva Stage. Red at first, this soft grub has a black head and black legs. As it matures, the larva turns yellowish-red or orange and develops two rows of black spots along each side of the body. It reaches a length of about 10 mm. It feed for 2 – 3 weeks before crawling down the plant and onto the soil; they then construct a small chamber in the soil and pupate. (Figure No 2)