Male citrus mealy bugs fly to the females and resemble fluffy gnats. The leaves have paired obovoid, fleshy leaflets which are whitish with mealy pubescence. The fruits are sweet, though with a dryish, mealy texture. Similar problems have been reported in India, with mealy bugs and aphids. Pests and diseases include scale insects, mealy bug, and rot. A short dough is one that is crumbly or mealy. Free from white hairs and flecked or mealy coat. The flesh is thick and soft and has a mealy or cucumber smell. Mealybugs have white hairs covered with a mealy coating. All parrots have powder down, with some species (including the mealy amazons) producing copious amounts. Based on vitreouness, wheat can be classified into three main classes&colon; vitreous, mealy and piebald. The seeds have a minute embryo, and mealy perisperm. The practical result resembles a Mealy machine or Richards controller. The southern mealy amazon was formerly considered conspecific with the northern mealy amazon. Mealy machines provide a rudimentary mathematical model for cipher machines.