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Unformatted text preview: of damp sandy soil to lay the eggs. The eggs hatch in 10-20 days, depending on the temperature 1 st instar nymph (8mm) 3 rd instar nymph (20mm) 5 th instar nymph (50mm) wing bud developing wings Parts of the world subject to locust invasion Adult (80mm) jaws fore-wing abdomen Locusts differ from other grasshoppers in their tendency to form swarms. While they are scattered, the hoppers and adults do little damage, eating the natural vegetation. When the density of hoppers reaches a critical level, they band together and move as a group of sometimes many thousands. When they take to the wing, they form swarms as large as several square kilometres. The swarms can travel for over a thousand kilometres and when a swarm lands on a food crop, it can destroy the crop completely. D.G. Mackean...
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- Fall '11