Whether flat against leaves or fruit, or lumpy bumps on branches or stems, this widespread superfamily of insects is well over 8000 species strong. These cottony masses can contains hundreds of eggs each. Cottony taxus scale is a soft scale (produces a thin, waxy outer covering attached to insect) as opposed to a hard scale (produces a harder, outer shell not attached to the insect). Yew scale has one generation a year and in early summer the adult insects can be seen on the leaves and stems. However, at maturity, scale insects are immobile, have no visible legs or antennae, and in the case of armored scales, are covered with a protective shell that ranges from about 1/16-to-3/8-inches in size. Scale insects can infest even needled conifers, making them especially dangerous in a garden of prickly evergreens. Cottony camellia scales, Pulvinaria floccifera, are cream to tan, elongate oval, and relatively flat.They are also called cottony taxus scales as this scale is a fairly common pest of yew. There's browning on the inside but I always thought that was due to the density on the outside restricting light. If it is a minor infestation, as it seems you have, you can control it … Went to check for scale and to be honest not sure what to look for so posting some pics. Ew, scale insects! Scale insects feed on shrubs' sap using their long, piercing mouthparts, causing twig and branch dieback and sometimes killing the plants. Scale sounds and looks a lot like a plant disease, but the term actually refers to infestation by any one of more than 7,000 species of tiny sap-sucking insects.Scale insects typically adhere to the stems, branches, and sometimes the leaves of plants to feed on sap, and they have a shell-like bump appearance, which sometimes causes them to be mistaken for a fungal or bacterial disease. In addition, heavily infested plants may become unsightly by a heavy crust of black sooty mold that develops on the honeydew. The insects attach to the needles and suck sap from the yew. Many of them are agricultural pests, while others prey on trees or other plant life. Another odd thing was when I went to check there were only a few insects now. This soft scale insect secretes an abundance of honeydew (sticky, sugar-rich material). A: This is cottony taxus scale, aka cottony camellia scale. Yew scale is a sap-sucking insect that lives mainly on the leaves and stems of a yew (Taxus). It is similar in appearance to brown scale however, brown scale is found on a wide range of plants but not Taxus. Scale insects … Scale insects can be divided into two groups: armored scales and soft scales. Scale insects also secrete a sticky liquid called honeydew, which promotes the fungal disease black sooty mold. Scale insects like mealybugs are among the most common parasites on indoor plants.. The insect tends to populate the undersides of leaves/needles. Quick scale insect facts. Name – Coccidae, Pseudococcidae, Diaspididae Lifespan – up to a year (dormant in winter) Size – from 1/16 th to 1/4 th inch (1-5mm). Scale insects tap into plants and feed on plant sap, weakening and even killing plants over time. Young females have a dark stripe down the middle and mottling at the sides. Cottony taxus scale is most commonly found on yews and hollies in this area. Danger to plant – fatal if infested How insecticidal soap works on plant pests. 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