The developmental biology of the egg stage of Western European Tettigoniidae (Orthoptera)



An account is given of the development, from laying to hatching, of 46 species of Tettigoniidae from Western Europe, in particular England, France and Spain. It is essentially concerned with the rate of growth and thermal requirements of the eggs through their phases of development, as determined under controlled laboratory conditions. However, the implications of these results are discussed in terms relating to the behaviour of the eggs in their natural environment.