Adult beetles are seen coming out of the ground in late May and early June. Most damage occurs in late summer and early fall after the grubs have reached the second and third larval stages. Masked chafer beetles deposit eggs in the top 2 inches of soil, often in small clusters. They are also C-shaped, like the European chafer larvae. However, they vary in color since they have a cream body and reddish-brown head, against the white body and yellowish-brown head of the European Chafer. Females lay … Chafer grubs can appear similar to the larva of the stag beetle (Lucanus cervus). They burrow deeper for winter and lie dormant before surfacing in spring to emerge as beetles. They feed on plants for three or four weeks, generally until late June. These lawn pests tend to curl up in a “C” shape at rest. Chafer beetles emerge from lawns and lay eggs, which hatch into grubs feeding. The large grubs of the chafer feed on the roots of both wild and cultivated cool-latitude grasses, which has made them a critter-non-grata on North American lawns. It was first identified in the Lower Mainland in New West Minster in 2001 and has since spread to many municipalities across Metro Vancouver. European Chafer: The European chafer adult is a small golden tan to light brown beetle, oval in shape, about 1/2" long. Lawn Grubs’ Life Cycle. May/June beetles have a two to three-year life cycle (grub stage from August through the next year and sometimes during portions of the third year), while masked chafer and Japanese beetle have a one-year life cycle (grub stage from late July through mid June the following year). Description. Here in Surrey, the Chafer Beetle has become an increasingly serious pest and many homeowners are frustrated by brown, torn apart lawns. Stag beetles are uncommon and cause no damage in gardens and should be welcomed. Life cycle of rose chafers. Rose chafer larvae are rarely seen. This infographic by Waltons explains it perfectly; You’ll normally see signs of a Chafer Grub infestation when the grubs are close to the surface, just underneath the turf. While there are variations depending on which species of beetle they come from, the larvae tend to be stout, white-to-grayish with brown heads, about 3/4 of an inch to 2 inches in length. However, larvae of the stag beetle are always associated with dead wood, usually tree roots and can reach 11 cm long (nearly 4 inches). The scarabs or chafers, including the sacred beetles of ancient Egypt, the goliath, unicorn, rhinoceros, and ox beetles, the tumblebugs, the figeater, the June bugs, the hairy, yellow-brown rose chafer, and the green-gold Japanese beetle, the majority of which are opponents of … The June beetle larvae also feed on the tufts and grasses, like the European chafer grub. BIOLOGY - LIFE CYCLE Chafers complete their life cycle in one year which can lead to rapid population increases. In order to effectively treat (or prevent) a Chafer Grub infestion it helps to understand the life cycle of a Chafer Beetle.. Life Cycle of the European Chafer Beetle. Small grubs hatch during late July and early August and immediately begin feeding on grass roots. The European chafer beetle originated in continental Europe but is now an invasive species found in temperate climates in North America, where they are often called June bugs. The grub is about 3/4" long, grayish white with a brown head and six legs. In B.C., the adult beetles emerge from the soil in early to late June and mate in swarms at dusk. Chafer grubs are creamy coloured, about 15mm (0.6”) in length with distinct legs (unlike vine weevils). In June and early July, females lay up to 300 eggs in the soil. A full grown rose chafer larva is about 3/4-inch long. 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