0000021390 00000 n Adult northern masked chafers, which are active at night, and Japanese beetles can emerge in central Pennsylvania from mid-June through mid-July. 0000026293 00000 n Properly timing an application of a registered preventive grub control formulation is very critical. 0000009940 00000 n This material is available to homeowners and should be applied according to label directions. �� �80l` `ePc�`�a�a�t �e�(�.|�Ƀ!�!́��)�i��������&� ���Lo�(�+�f�M �ge� Several seasons of surveying turf sites throughout Massachusetts have revealed four species of grubs (Japanese beetle, European chafer, oriental beetle, and asiatic garden beetle) to be causing most of the damage we see each year. Survey and map the area in question to be sure an infestation is present. 0000014014 00000 n In terms of physical characteristics, adult European chafer beetles are about a half-inch long and a light brown, or tan, color. European Chafer Beetle is a coppery tan coloured little beetle just a little over 1 cm long. 0000024665 00000 n They must be applied to a wet lawn on a cloudy evening. The European chafer is especially common in many areas inside Route 495 in eastern Massachusetts. <<4D60848888D9764AAC048050BE3797AF>]>> Why do we need this? It has a transverse anal slit and a very distinctive V-shaped set of spines just in front of the anal slit. Each grub has a slit near its tail end through which it excretes fecal matter. Evidence of grub damage, including patches of dead or dying turf, are visible during spring (April and May) and late summer and fall (September and October) A good indication of a grub infestation is the presence of skunks, crows, or moles feeding on turf. In contrast, Japanese beetle prefers moist soil and is responsible for most of the damage to irrigated turf. 0000022508 00000 n They are a tan brown color and can mostly be found in turf and lawns. It flies for only an hour or two just after sunset during a threeweek period in late June. European chafer is most damaging when it first becomes established in an area. 0000022404 00000 n endstream endobj 12 0 obj <> endobj 13 0 obj <>/Encoding<>>>>> endobj 14 0 obj <>/Font 16 0 R/ProcSet[/PDF/Text/ImageC]>>/Type/Page>> endobj 15 0 obj [] endobj 16 0 obj <> endobj 17 0 obj <> endobj 18 0 obj [278 355 556 556 889 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 611 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 333 500 278 556 500 722 500 500 500 584 350] endobj 19 0 obj <>stream Likewise, the adults have dark chocolate brown heads that shade to a light brown (masked appearance). The European chafer (Rhizotrogus majalis) has been spreading through parts of New England during the past 15 or 20 years.The European chafer is especially common in many areas inside Route 495 in eastern Massachusetts. The European chafer looks like a small June beetle (all light brown). 0000014767 00000 n The grubs feed in fall and spring. The European Chafer Beetle originated in continental Europe but can now be found in temperate climates across North America. View our privacy policy. Full-grown third-instar Japanese beetles and northern masked chafer grubs average slightly over one inch in length. Do not contaminate forage, streams, or ponds. 0000020650 00000 n European Chafer bugs are another type of beetle that is known under the broad name of June bug. The adult European chafers can be found above ground in late June and early July. Your next step is to apply Nematodes in July. 0000024779 00000 n Description. 6) from May through early-June. Likewise, be sure to follow all label directions regarding irrigating in this organism immediately following their application. The adult Japanese … 3). x�U��n�PE�9O�a: ����uH���s�;���v!�t�{�5�X$������4w` `����� �"O(f`fb�d0���3� ��X�0�c�>���)�a"C�c�9L{�P~�����0�A%�����Xo0LaPm,�z�hˠv���&�.�FK�� b� They were first observed in the United States in 1916 in southern New Jersey. With the exception of the common May or June beetle, which has a three-year life cycle, the life history of the beetles mentioned above is completed in 12 months (Fig. ... April – June is when the grubs will have grown into beetles. They emerge at about 8:30 pm, mate through the night, and return to the soil by daybreak. Each species has slightly different behavior patterns and some are more vulnerable to various management approaches than others. -! 0000021748 00000 n After this period, the immune system of the larvae is strong enough to repel any action taken against them. You need to apply a curative application during the summer when the grubs are small and actively feeding near the surface. 0000017383 00000 n 0000020173 00000 n These characteristics combined are called the "raster pattern". The grub is about 3/4" long, grayish white with a brown head and six legs. 5). Japanese Beetle:The adult Japanese beetle is about 1/2" long with a shiny, metallic-green head an… 0000002297 00000 n Grubs are dirty white, soft bodied, and robust with a brown head and six well-developed legs, with exception of green June beetle grubs, which do not have well-developed legs. In order for this bacterial agent to become established, you need a Japanese beetle grub population. 0000008595 00000 n 0000002419 00000 n Thus, each situation must be evaluated and judged separately. The adult grubs are twice as long, white with a brown head and 6 legs. Prior to purchasing a product be sure to read the label regarding optimum time to treat for grubs. The rule of thumb assumes that during the period of June 15 to July 20, when both European chafer and Japanese beetle are out in the adult form and are laying eggs, turf in Michigan is usually pretty dry. A review of 2005 trap data indicated that first flight of adult Asiatic garden beetle was recorded in early July. Irrigate deeply 2 to 3 times a week. 4) are chestnut brown, covered with fine hairs, resemble small June beetles, and are roughly 1/2 inch long. The biggest problem causing the most visual damage is the fact that crows, skunks, and  raccoons will tear apart what remains of your lawn in order to feast on this delicacy. You will need to sample on a regular basis to determine the absence or presence of grubs and which larval instar is actively feeding. Figure 5. 0000002999 00000 n Thus, you should not apply an insecticide treatment before or after applying milky disease. Live grubs are not always cooperative, but with practice you can find the features. startxref LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, Jim Baker, North Carolina State University, Bugwood.org. They emerge from the ground starting in late June… Insect parasitic nematodes are available to curatively suppress various white grub species. Recommended Control 0000025410 00000 n Two major species available for suppressing grubs are Steinernema spp. Northern masked chafer is native to the United States. JavaScript seems to be disabled in your browser. Hence, a preventive application of a registered insecticide applied between mid-June and mid-July in 2005 in Centre County should have provided preventive control of the two latter scarab white grubs (i.e., Japanese beetle and northern masked chafer). The European Chafer grubs are distinguished from other white grubs by the "Y"-shaped anal slit and by the parallel rows of spines on their raster. European chafer thrives under dry soil conditions and is responsible for most of the damage to home lawns and golf course roughs. 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. A small hand lens will help. They are not harmful to humans, pets or other animals, including bees and earthworms. Adult northern masked chafers can be monitored by using a black light trap, while Japanese beetle adult flight activity can be observed by using a sex pheromone floral lure trap. Please refer to specific labels for use site restrictions, dosage rates, safety equipment, application timing, and so forth. 0000023533 00000 n Another species, the May or June beetle, can be devastating where it occurs, but fortunately its distribution appears to be somewhat restricted. The size of a white grub varies with the species and its age. The adult grubs are twice as long, white with a brown head and 6 legs. 0000018175 00000 n They are similar to Melolonthinae, more commonly known as “June bugs,” that are found in Minnesota in early summer, but the European chafer beetle … Their life cycle is only one year long, so their population increases rapidly. ����P���Ù�P���Ù�P���Ù�P���Ù�P���Ù�P�����x8.�ápy8��#�p(\��C����G�P���"�x!��#�yE�#XP�(BY���G��"��:�yd�(BY���G��"�ܗ�"�ܗ�"�\iB��H�KB��H�KB��H�KB��H�KB��H�KB��h�/ Eʣe~B��h��P�. 0000015496 00000 n 0000012339 00000 n Therefore, a curative application has to be made at the proper time. By entering your email, you consent to receive communications from Penn State Extension. These include the Ten-lined June beetle (Polyphylla decemlineata) and other June beetles, Phyllophaga species in the Scarabaeidae family. In some cases you may be able to spot treat where the damage is located. 0 The asiatic garden beetle has a branched anal slit and has a very distinctive semicircle of spines just in front of the slit. 0000009314 00000 n European chafer adults are 1/2 inch long. The European Chafer beetle is a grub that feeds on the roots of plants. They infect grubs 48 hours after application and will kill them 2 weeks after infecting them. European chafer grubs are slightly larger than Japanese beetle grubs. Dispose of empty containers right away, in a safe manner and place. That slit may be "transverse" (curved following the contour of the body), or it may have a Y-shaped branch in it.

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