Colour preference of female green lacewing, <i>Chrysoperla</i> sp. (Neuroptera: Chrysopidae) for egg laying under laboratory conditions

Abstract

Colour preference of female green lace wing, Chrysoperla sp. (Neuroptera: Chrysopidae) for egg laying under laboratory conditions were tested in the Bio-control Laboratory, IGKV, Raipur during 2018-19. Females of Chrysoperla sp. visually distinguished different colours viz., green, white, brown, black, red and pink coloured substrate for egg laying. In the present studies, among the colours tested, Chrysoperla sp. females preferred black colour as substrate for egg laying and laid an average maximum of 36.36 eggs followed by green colour (31.78), white colour (22.94), pink colour (20.81), red colour (20.42), brown colour (14.00), respectively. Thus, for the mass multiplication of Chrysoperla sp., under laboratory conditions, black coloured cloth/paper can be used.