They may roll up the leaves or spin webs. Mustard sawfly, Athalia lugens proxima (Tenthredinidae: Hymenoptera) Distribution: All over the Indian sub continent. Adults inflict damage by act of laying eggs with the help of their saw like ovipositor. %PDF-1.5
���ܕ.�0ޝ#)\rZ�C褰�KfF��ۡ��RH��H���T�"7p.RA�n�\���Б��T�0t%��Tp��I�"+�n�\�����N�9t� Management of Major Diseases and Pests of Mustard in India S. J. KOLTE Ex-professor, Department of Plant Pathology, ... sawfly (Athalia lugens proxima), painted bug ... Albugo candida) is known to be of race-specific nature governed by major genes (1 -3 genes). Nature of damage: The larvae web together the top leaves or bore into tender shoots and capsules and feed on them. Nature of damage by mustard sawfly, Athalia lugens Initially the larva nibbles leaves, later it … Sawfly and moth larvae form one third of the diet of nestling corn buntings (Emberiza calandra), with sawfly larvae being eaten more frequently on cool days. Centre for Development of Advanced Computing, Hyderabad. The wheat stem sawfly, Cephus cinctus (Hymenoptera: Cephidae), is an important pest of wheat and other grain crops in the northern Great Plains. Some leave holes or notches in the leaves, while others skeletonize the leaves by completely devouring the tissue between the veins. Larvae nibble margins of tender leaves and later bite holes in the leaves. Mustard saw fly Biology (1999) [13] found that 34 species referred to 9 genera of 6 tribes and 4 sub families of tenthredinidae are reported. Adults and nymphs suck sap from all parts of the plant. )c��7p.9cb�l�.9c�H���s����a��K EH�J �\m�r� <>
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f�)#5�Ul Mustard sawfly, A. lugens proxima Klug (Hymenoptera: Tenthredinidae) has become a serious pest of mustard and radish in several regions of India, including the north- eas t India [6, 7] . Sawfly damage is caused by the larvae that feed on the plants in several different ways, depending on the species. 1 0 obj
High numbers can cause defoliation. 4 0 obj
Just a few sawfly larvae on a large or mature plant may do little damage and can be tolerated. Although the seedlings succumb; the older plants, when attacked, do not bear seed. They bite holes into leaves preferring the young growth and skeletonize the leave completely. You will most likely find them underneath the leaves. Nature of damage: It has a great potential to defoliate the crop plant at seedling stage. Black grouse (Tetrao tetrix) chicks show a strong preference for sawfly larvae. l�JQ��mr���{��g{�0g����~قG\���q��0:0�_��M�����uO��9��s�]���X�8$ �.�H�4����?&}�'��m�Oi>f4gÃO��hH�3 �ѐ�p�?���}���kޘ� �LC���\,���ARPw��Mz��QuM��Oy����]�F^���7:�qo�&�y�l�k�*m2-�+�7(���ZY�N��уZ6ق�8`l&��1�����'Č20�_�mSj�_gӰD���!��e <>
Larvae nibble margins of tender leaves and later bite holes in the leaves. Get some gloves and go over your rose petal leaves. Live with the insect. ���-�����&\�i0! Damage, symptoms and biology. Sawfly larvae resemble caterpillars but they have more than 5 pairs of prolegs on the abdomen. When disturbed, the larvae of most sawfly species adopt an S-shaped pose, often raising their rear ends and waving them about. &�\���6��d K�����6B�� ����#��z�X��O 1���;m&Y�`�i�$�b�`������N$j)�. Bio-902, and JMMWR 914-1-2 have been released. Ministry of Electronics and Information Technology (MeitY). ���"s�N���T0��8�`1e8]��H�GR(�`*q$�r� WR-resistant varieties, viz. Adults inflict damage by act of laying eggs with the help of their saw like ovipositor. Larva of mustard saw fly, attack young crop (seedling stage) by biting holes into leaves and may feed on all the leaves in heavy attacks. Young plants wilt and wither as a result of the attack. Larvae can occasionally damage wood in structures such as decks, landscape timbers, and even homes. Nature of damage. x��rB��=�����;��8��n ��8 �7�Sj�=���4�B��B��vo�@�"�"�T!�2ȧ�t�1�/��h�=��{�_ @QB���B��$9�We���뿤۵�g�7����̓>�r�U�Eq8�a����t�L�{|�f��Ň Adults are actually wasps. Distribution of mustard sawfly, Athalia lugens Westendorff et al. ��Q(�
J�x����ќ��Sl����c�\��3��Z�uh4�{�W�6X�0z���P��x��P���ub�J�](�J+�$y�`��`��u����bhxM*�T舵)g#$>�+mpM`�v� -t�*TVД4�x���p=h���4q���h��Is ���Y]Z�9�X��@�1}w Harvested crop in threshing floor is also infested. Quality and quantity (31% losses) of yield is affected when grown up plants are infected. endobj
(�Ļ���q��c�7ĝi��� Management: Give first irrigation 3-4 weeks after sowing as it reduces tge bug … Older damage browns and can sometimes look like a disease lesion. Damage symptoms. like symptoms due to termite damage; (b) virus or phytoplasma – like symptoms due to drift of 2, 4 –D spray on adjacent wheat or in mixed crop of mustard; (c) improper opening of flower buds due to pollen beetle inside the flower bud–abnormal flower buds; and (d) The larvae are pale green with a dark head. The dogwood sawfly, Macremphytus sp., is an interesting sawfly because the second larval instar (stage in the larval development between molts) is covered in a white waxy covering … The larch sawfly can be detected by looking for the slits on new shoots in which females have deposited their eggs or checking for groups of larvae crawling on the branches.
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