In recent years the plant bug Ragmus importunitas D. (Miridae-Hemiptera) is causing extensive damage to the green-manure crop, Sunnhemp (Crotalaria juncea L.). The damage is especially severe when the crop is grown for seed purposes. The distribution of the insect has been reported to be India, Ceylon (Hutson 1931, 1933), Java (Goot 1927, Tollenaar 1934), and Celobes (Goot 1927). In India the insect has been noted in Delhi, Nagpur, Samalkot and Madras. Considering the importance of the insect on the green-manure crop as a potent pest and as information on the biology of the insect is lacking, investigations were undertaken during 1960-61 in the Agricultural College and Research Institute, Coimbatore. Results obtained in the investigations are reported in this papег.
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Tamil Nadu, India.
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