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.
Aphid Parasite Wasp - Aphidius or Trioxys sp. Family BRACONIDAE . This page contains pictures and information about Aphid Parasite Wasps that we found in the Brisbane area, Queensland, Australia. Body length 2mm. Aphid Parasitic Wasps are the very small wasps. They fly actively searching for aphids.