Fig. 4.—Flight polymorphism in S. arguta. Kainga Channel. (4A). The relative frequencies of the morphs in the population. The upper graph line compares normal with flightless and newly moulted bugs and the lower line normal with flightless bugs only. (4B). The relative frequencies of the mature morphs and the developing stages. The category “newly moulted bugs” comprises the early stages of both normal and flightless morphs. The horizontal shading in the “flightless morph” category indicates the period when separation of flightless and newly moulted bugs was extremely difficult. (1). Flightless morph of the overwintering population.

Transactions of the Royal Society of New Zealand : Biological Sciences, Volume 12, Issue 11, 10 June 1970, Page 127

Fig. 4.—Flight polymorphism in S. arguta. Kainga Channel. (4A). The relative frequencies of the morphs in the population. The upper graph line compares normal with flightless and newly moulted bugs and the lower line normal with flightless bugs only. (4B). The relative frequencies of the mature morphs and the developing stages. The category “newly moulted bugs” comprises the early stages of both normal and flightless morphs. The horizontal shading in the “flightless morph” category indicates the period when separation of flightless and newly moulted bugs was extremely difficult. (1). Flightless morph of the overwintering population.