�iS��� Őu�Ҟ�4G3YI��,q�CaGh{����GV5L���ɸ���v��x��2���EW��O�I��3�(�q4�s���mK����iE��2�E��9!�o� endobj Dogwood borer Synanthedon scitula (Harris) — Lepidoptera: Sesiidae. The dogwood borer overwinters as a larva concealed within a burrknot. One of these pests is the dogwood borer. For Figure 3. Dogwood borer. Dogwood borer. The paper, authored by Dr. Very young trees are frequently killed and older ones are left reduced in vitality and with dead and dying branches. Dogwood borer adults are clearwing moths that look like a wasp. The insect has a wide host range including dogwood, pecan, oak, plum, and apple. Photo: James Solomon, USDA Forest Service, Bugwood.org Small, wet areas on the bark, dead branches, adventitious growth (water sprouts on trunk and large branches), or sloughing and cracking of bark can all be symptoms of dogwood borer … The larvae of the borer lives in the cambial area and can kill branches or entire trees. Insecticides with more residual activity (long lasting effect) are being applied on the lower trunk and burr knots. The dwarfing rootstock, M.9, creates an abundance of burr knots. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg, VA, United States; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg, VA, United States. 444-625 (ENTO-355NP) Authors as Published. Adult male dogwood borer, Synanthedon scitula (Harris). As the larvae grow larger the eventually begin to feed on the sapwood. Pest: Dogwood Borer (Synanthedon scitula (Harris)) Order: Lepidoptera. <>/Metadata 89 0 R/ViewerPreferences 90 0 R>> Una de estas plagas es el perforador de cornejo. Infesta ons in young trees usually occur in the main trunk, o Len around lawn mower injuries. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg. Dogwood Twig Borer. Young trees are frequently killed, and older ones are reduced in vitality, often leading to death. org &�v{wy!`��SQ�a�RObv��>|�X^��,�����py������~���v���Ź�%W�1�X�0���*���O�]>t��C����0�Q�x�z|&�S��))y��P#�"ޗ��\��>V>��y4�����(H���Ȁ�A�c`BK�P�(��%=�W�9`��T��B_Ư��V����σ�Z��UY� Dogwood Borer. dogwood. Aunque los árboles de cornejo son, en su mayor parte, un árbol de paisajismo fácil de cuidar, tienen algunas plagas. The head is dark to almost black. Dogwood Borer Damage at the Base of Flowering Dogwood. It is also an important pest of many other ornamental, fruit, and nut trees. A triangle of three black spots is visible on the top of the thorax. In its larval stage DWB infests the trunks and branches of apple, dogwood, pecan, elm, hickory, and willow. Credits: James Solomon, USDA Forest Service, www.forestryimages. 4����}�Iߪx�h��~� �=�c.OM���R�T�L(q x�|Y�` Eric Day, Insect ID Lab Manager, Department of Entomology, Virginia Tech. 1 0 obj Insect. Virginia Cooperative Extension materials are available for public use, reprint, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University. Larvae are nearly white to light pink with a deep brown head capsule, and reach ½ inch at maturity. Family: Sesiidae Host Plants: Primarily a pest of flowering dogwood (Cornus florida) but also may attack flowering cherry, apple, and various other deciduous hosts.Description: Flowering dogwoods that are older and especially those that have been wounded by mowers or line trimmers are most susceptible. Dogwood anthracnose is the disease that can cause tree decline and mortality. <> College of Natural Resources and Environment, Virginia/Maryland Regional College of Veterinary Medicine. C. Borer, R. Miller, A. Fortini, co-investigators. Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Adult is bluish-black with yellow bands and clear wings, resembling a wasp. With transparent wings and black and yellow bands, the Dogwood Borer is a great mimic of bees and wasps. Dogwood borer - Synanthedon scitula (Harr.) Adults can be present from July to September. In spring, it feeds on burrknot tissue until it pupates in May. These root initials provide ideal locations for the dogwood borer to lay eggs and for larva to burrow and feed upon. Dogwood Borer in Apple Larry J. Gut,1,2 Peter H. McGhee,2 and Ron Perry3 Michigan State University, East Lansing, MI 48824 Additional index words. burrknot, rootstock, Sesiidae, Synanthedon scitula, cultural control, reduced insecticides Abstract. %PDF-1.7 Figure 2: Bronze birch borer larva, a type of flatheaded borer. It is an extremely notorious pest tripunctata, the dogwood twig borer is a species of longhorn beetle that is a widespread pest that attacks dogwood trees. Dogwood twig borer, Oberea tripunctata (Swederus), Cerambycidae, COLEOPTERA. Figure 3: Emerald ash borer adult next to D-shaped exit hole.Photograph by David Shetlar, The Ohio State University. They may take 13 to 22 months to co… Dogwood Borer (Synanthedon scitula) Detailing the physical features, habits, territorial reach and other identifying qualities of the Dogwood Borer. 2 0 obj eU�9<0�l�F��3��D�. Adult – The adult is a slender beetle measuring 10 to 15 mm long and 3 mm wide. 3 0 obj Dogwood borer is also the major insect pest of flowering dogwood, a valuable ornamental species, causing losses to homeowners, municipalities, and nursery operators (Hartman et al. Synanthedon scitula (Harris) Lepidoptera: Sesiidae. The adult female borer lays its eggs on the bark and dies soon after. The larvae feed on the phloem tissue. C. Borer, faculty sponsor. endobj The DWB has one generation per year throughout its geographic distribution. stream Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts.Check the label of any pesticide referenced to ensure your use is included. Types of Clearwing Borers Dogwood borer, Synanthedon scitula, prefers flowering dogwood (Cornus florida) as its host. Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Howdy, BugFans, Dogwood Twig Borer. We began a study in our IPM Apple System work at Clarksville in1998 to determine the potential of mounding soil compared to insecticides to control dogwood borer in apple. <> Photos. The dogwood borer makes irregular tunnels under the bark on the main stem and sometimes on the base of limbs. Adults are typical black and yellow clear-winged moth similar to but smaller than adult lesser peachtree borer and peachtree borer, with a wingspan of only ¾ inch. The wing covers are yellow tan, with a narrow, black line on the inner edge and a broader, darker line on the … x��Zmo�� ���"抔��p@����b�vs-�^?�2#��H>�J�ߙ�Hɖ�8Y�-�%ќ��g�b�~b�}���������{v����vy�q�%B2���%�����?�Ċˋ��ˋw? They enter trees through the bark. This Dogwood twig borer (Oberea tripunctata) missed the recent “Dining on Dogwood” episode simply because it wasn’t foraging among the dogwood’s white flowers; the BugLady found it in early July on a prairie plant (there was probably a red-osier dogwood nearby).The Dogwood tree borer’s name is a study in confusion. Dogwood Borer, The dogwood borer, a native clearwing moth, can be found from southeastern Canada to Florida, and as far west as the Mississippi. A factsheet on the dogwood twig borer, an ornamental pest. The relationship between the extent of burrknots on apple rootstocks and dog- The Dogwood Borer. Figure 5 Larva of dogwood borer. Infesta ons in older trees are likely to be higher up in limb crotches or main limbs and associated Though dogwood trees are, for the most part, an easy to care for landscaping tree, they do have some pests. We have found an average of 1 to 4 larva per 3-4″ tree caliper, in highly infested trees that have had successive infestations for three or more years. DESCRIPTION. Competitive grant from the Dogwood City Grotto of the National Speleological Society. Phtograph by David Shetlar, The Ohio State University. Hosts The dogwood borer occurs throughout the midwestern and eastern United States and southeastern Canada. ��8��5�p��� i�nP�4��qq0y���"_Bp ��� �4[���At ���OH�.43x���ѧ� c�,��x��q�w��H�n�:��Nj=�|͗bH�8���P܁��j��F�v��W��ѨA[!w/��=��:�9J�AE$w��m���K���I���֤�l}�ZF[ vO����f�c����&y�lf;��Q؛�a��������6�^2d���:=�/����A���c�����v2�p�ҭ,�z� ~ ��İ��f�J����:�"? MORE BORER: High density systems carrying 1200 to 2000 trees per acre can carry very high populations of endemic dogwood borer, simply by the shear number of infestation sites utilized. Distribution: Most fruit-growing states and provinces in eastern North America. 2011. 4 0 obj Home > Pest management > dogwood borer Dogwood borer larvae develop in shallow tunnels in burr knots on dwarfing and semi-dwarfing rootstocks at or below the graft union. endobj This publication is available in a PDF file format only. © 2020 Virginia Polytechnic Institute and State University. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> }�C�9+��w�.5i�$g3wpㆵvCZ���zr��$�^~�^��`����I,p�Q�-���Xk+�a��cݹ�.rk��B�kmt��X��� �w���0�-1�j��GNGJʟ+�ݩuwB�@#�ti��@.U>σ�쥕^�3q�!���J���(��(�5�����!�Q�杮�jk����K�&��V���a�(�2�B����� �K,�`���W���.�Thh���f�n��&�jm��D��� k?��đ?$�aa��i�8�����,ml��.t�?�9ոV�v|�xmk�m�1��� -rG�!����ȇuut 1997). Dogwood borer (Synanthedon scitula)- is the most serious insect pest of dogwoods. NY State Ag Experiment Station A. Small trees or branches may be girdled. Eric Day, Insect ID Lab Manager, Department of Entomology, Virginia Tech. Figure 4: Extensive tunneling injuries produced by larvae of the Gambel oak borer. Mitigation of human waste on multi-day cave expeditions. Other plants attacked by this insect include flowering cherry, apple, mountain ash, willow and oak. Very young trees are frequently killed and older ones are left reduced in vitality and with dead and dying branches. Females have a wide yellow band on the fourth abdominal segment, compared to a much narrower band on the same segment of the males. wood trees is the dogwood borer. A member of the clearwing moth family, the dogwood borer, Synanthedon scitula (Harris), is one of the most destructive pests of flowering dogwood, Cornus floridaL., affecting plantings in homes and parks (Johnson and Lyon 1991). ID. Funding awarded in support of a student research project. The best prevention is to avoid damage to the bark with equip-ment such as lawn mowers or weed eaters. Virginia Cooperative Extension programs and employment are open to all, regardless of age, color, disability, gender, gender identity, gender expression, national origin, political affiliation, race, religion, sexual orientation, genetic information, veteran status, or any other basis protected by law. The borer infests a wide range of host plants, and dogwood trees may be infested from a variety of nearby host plants. dogwood trees actually increased dogwood borer infesta-tion (Owen 1991). The dogwood borer (Synanthedon scitula) is one of the most serious pests of flowering dogwood in Connecticut. An equal opportunity/affirmative action employer. ���@��P=n��W�����B��|.���|`���>Z���C�~�*�Rz�Э�y���5m�8_D���7*����e]��-R���E�np",�P��&'>�Ǥa�X&������� ��Y�'~aaV#1�H�$3�}��CY�%�?������j����"��!S�Yʿ�����!P@R ��$sZ8�L�z� ;�a*����.�_�F8fɬ��֍�P��� U��pm�A+�C�$F:D�a�{�&�h|��rG�u0DH�KR~Zd�d�+����ΉH���Ļ�v�$������Đq���{�IeC��t���$���2N���5>E���f'U��x���ډ7�-���q�t�?0NrE�@D���Q �Ô�&I+���9��:h#��=��('ɘ�/eW5Q=�3���j�YtzR���r�_��1[�oF�C�B�'���� 9��(�1q�bere[!б),5���N�ZX��j��,4uЅF����†�CQ��"����b\U���)H��,O�N��tn��|%����Xh�ݔd�VZ����.�F�\�Hj��ᾏ�Jx����4��0}����K�g��1�ʩ\�BV���0�fX�(K������։n�8�fM���k����,u�y�� �%�X��m��ů�l��4=!p�IF�e����B��*�jR�3t�����U��sNmZOq;�V�˝���]��]�s��4��w�nn�C�7h}���a3�E���4�"�>�n/��� ����joy:�U+j�r:�SL\��/y�)���MS��L��K�ytzRƯ��.�~4����w��HP=�o{���F�]0v2��۵�Zx %���� The dogwood borer rarely kills a tree in one season, but if left unchecked, these pests can eventually kill a dogwood tree, especially a young dogwood … Reddish frass on the exterior of the knot indicates the presence of the larvae. Dogwood Borer Synanthedon scitula The dogwood borer is one of the most serious pests of flowering dogwood in Connecticut. Dogwood borer, Synanthedon scitula, (DWB): Is a common pest in the burr knots of apple trees on clonal rootstocks. Lea este artículo para obtener consejos sobre el control del barrenador del cornejo. The dogwood borer (Synanthedon scitula; DWB) is a small clearwing moth native to eastern North America. �C��=�ȹT���+ϣ�5�v;,�@q��sg8A�mUoH�.vE���T��Ee����i6%pE�+��J�P� 5!l���?F�3:q r2M+f������ �;�� Q���.����c�5�S("4F���>���͌jm�5E��LW$���rLC�)��� �����RS?��9�4�%o�����. Life Cycle. Gut, et. Synanthedon scitula, the dogwood borer or pecan borer is a major pest of many plants including the dogwood and pecan. Figure 1: Bronze birch borer laying egg under bark crevice. Cultivated trees are usually more heavily infested than those in wood lots. 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