Boisduval scale
light yellow, thin and semi-transparent, approximately 1.2-2.2 mm in diameter and circular or oval. The cast skins of the nymph form a light yellow spot [...] the tropics, and in greenhouses in more temperate climates. It is very polyphagous and can be a pest of orchids, palms, pineapples, bananas and many other [...] scales on upper and lower leaf surfaces, fruits, and stems of plants. On palms, Boisduval scales are normally found on the leaves and stems. Toxic saliva