> Aphis (Aphis) craccivora; See subspecies craccivora for additional information. Key words: Aphis craccivora, Crop Pest, Entomopathogenic Fungi, median lethal concentration INTRODUCTION Cowpea aphid, Aphis craccivora (Koch) is a threat to cowpea growers in all over the country. To minimize loss due to pests, farmers/growers use synthetic insecticides frequently for their control, which led to insecticide resistance, detrimental to natural enemies of pest, environment, etc. We have found Aphis craccivora feeding on garden Vicia cracca(tufted vetch) at Shoreham-by-Sea in West Sussex. The eggs hatch in early spring and the first larvae are known as fundatrix (stem mothers) and feed at first on alfalfa. subspecies craccivora Koch, 1854; synonym atrata Zhang, 1981; synonym atronitens Cockerell, 1903; synonym beccarii Del Guercio, 1917; synonym canavaliae Zhang, 1981 It may move back to alfalfa later in the year. It is abundant in the Mediterranean area and subtropics and in the tropics it is one of the most common aphid species. Natural enemies include parasitic wasps, ladybirds, lacewing larvae and hoverfly larvae. 1978. Aphis craccivora, variously known as the cowpea aphid, groundnut aphid or black legume aphid, is a true bug in the family Aphididae. DAN A. gossypii Glover. The cowpea aphid, Aphis craccivora Koch (Hemiptera: Aphididae), is one of the most destructive insect pests of legume plants worldwide. The honeydew produced is deposited on the plants and encourages the growth of sooty moulds which restrict photosynthesis. A population explosion of Aphis craccivora Koch (Homoptera: Aphididae) in cowpeas protected with cypermethrin. Both nymphs and adults suck plant sap and cause serious damage right from the seedling to pod bearing stage. Picture of Aphis craccivora Koch. 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aphis craccivora koch