Insect Picture and Article

Chrysochus Auratus is a harmless dogbane leaf beetle, Chrysomelidae (Leaf Beetles) family, and order of Coleoptera. Beetles in the family Chrysomelidae are commonly called leaf beetles. Leaf beetles feed strictly on plant materials. The adults usually consume leaves, stems, flowers, and pollen. Most larvae are subterranean in habit, feeding on roots and rootlets, but others will consume foliage as well. Many chrysomelids are very specific to particular host plants, but most are able to live on a variety of plants; i.e. the so-called dogbane leaf beetle, Chrysochus auratus, which feeds on prairie plants such as milkweed (Asclepias sp.) and plants in the dogbane genus Apocynum. The dogbane beetle is fairly large, about 3/8-1/2 inch in length. With a brilliant metallic green in color makes Chrysochus Auratus  a beautifull  beetle.

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)

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Here is illustrated picture of Lily Beetle (Lilioceris lilii) life cycle with brave explanation.

1. Eggs Stage. The eggs of red Lily Beetle are lain in rows of about 2-15 eggs on underside of leaves. The size of these eggs are about 1.0 x 0.5 mm and orange in coloration with a sticky orange-red secretion, which help the eggs stick to leaves. This stage usually occur in late spring-summer.
2. Larval Stage.  Red Lily Beetle larvae consist of four larval instars, developmental stages between each moult within larval stage.  Larva are deep orange. The stage last about 10-11 days.  This stage usually occur summer.
3. Pupal Stage. After changing colour from yellow to orange, the pre-pupal larvae bury themselves in the soil and construct well camouflaged cocoon from which the beetle emerges as young adult after 20-22 days of pupation. This stage usually occur in summer-autumn.
4. Adult Stage. The adult over winter in the litter, reemerging in the spring from their hibernation sites and feeds on lilies and fritillaria. This stage usually occur in winter-spring.