The incredible size of individual species of insects is only dwarfed by the incredible numbers they sometimes occur in. In 1943 Profeesor Salt found that an acre of British pastureland near Cambridge supported over 1,000,000,000 Arthropods of which nearly 400,000,000 were Insects and 666,000,000 were Mites the remaining 38,000,000 were Myriapods (Centipedes and Millipedes).
Some Scientist have recorded the otherwise inconspicuous Springtails at densities as high 100,000,000 per square metre in the ordinary farm soil of Iowa U.S.A.
In Africa swarms of Orthoptera ( Desert Locusts Schistocerca gregaria) may contain as many as 28,000,000,000 individuals. Although each Locust only weighs about 2.5grams when they are all added up together this comes to 70,000 tons of locust.