The constraint or budget line, in the diagram below, represents the possible levels of consumption in the two periods given the individual's level of present income, future expected income and the prevailing interest rate 'r'.
Wasp, common name applied to most species of hymenopteran insects, except bees and ants. Insects known as wasps include the sawflies, the parasitic wasps, and the stinging wasps, which are the best known. About 75,000 species of wasps are known, most of them parasitic. Characteristics.
True bugs are listed within the order called Hemiptera. Insects in this order are different from other insect orders, such as Hymenoptera (ants and bees), Lepidoptera (butterflies and moths), or Diptera (flies and mosquitoes).