Monogeny. the production of unisexual broods by individual females. is widely recorded in gall midges (Diptera: Cecidomyiidae). Theoretical models propose that the adjustment of offspring sex ratio by females may pre-dispose the evolution of monogeny in gall midges however empirical studies in this field are superficial. https://www.graphikjunkie.com/product-category/floor-squeegees/