what is cottony maple scale

Management. The insect tends to populate the undersides of leaves/needles. They secrete the white, cottony masses beneath which, they lay 500 or more eggs in late May to early June. Control measures must be timed to coincide with hatching of the crawler stage which usually occurs in early summer for cottony scales. I say obvious because there was definitely something that wasn’t right with the plant. The trunk I believe is showing extensive canker damage from a fungal disease, possible tubercularia or nectria which could have been exacerbated through our tough winter temperatures this past winter. This damage causing insect is a sucking insect that has a straw like mouth it uses to feed itself on the leaves of the host tree. In the spring, a white egg sac is developed and holds many crawlers (insect). Cottony maple cushion scale belong to the soft bodied type. Cottony maple scale Pulvinaria innumerabilis. The crawler's waste is called honeydew. The eggs hatch in June and July. Some of the leaves look like they are being eaten by the fungus. A mature female cottony maple scale is 1/8" long, and has a brown, flat, oval body. Cottony scale is a sap-sucking insect that consumes the cell content of trees. An infestation of cottony grass scale (CGS) appears as tiny cottony sacs that resemble cotton swabs attached to the grass blades. Its favored host is maple trees, although it has been found on a number of other species as well. European elm scale. It is also reported on beautyberry, jasmine, mulberry, and hydrangea. The cottony maple scale, Pulvinaria innumerabilis, is a common insect pest in midMichigan. The female will deposit 1,500 to 3,000 eggs before she dies. Pulvinaria innumerabilisThe cottony maple scale (Pulvinaria innumerabilis) is one of the largest and most conspicuous scale insects in this country. Pest description and crop damage The cottony maple scale is one of the largest soft scales. Cottony Maple Scale. Cottony maple scale causes damage by feeding on the sap of a tree. These cottony masses can contains hundreds of eggs each. The scale is called maple cotton scale, Pulvinaria innumerabilis whereas cottony cushion scale is Icerya purchasi, which I am sure clears that up completely for you doesn’t it? COTTONY MAPLE SCALE is an insect pest of maples, especially silver maples and locust trees primarily, but also will infest several other species. Cottony maple scale over-winters as immature females (nymphs) on twigs and branches. This scale primarily attacks azalea and rhododendron but has also been found on andromeda, maple, arborvitae, willow, poplar, and hackberry. Cottony camellia scale is a soft scale that feeds on camellia, holly, yew, euonymus, sweetbox, and maple. The white cottony egg masses, which resemble popcorn, are the most distinguishing feature of this scale. The Cottony Maple Scale will survive over winter and pester the tree over and over as you can read in the previous attachment. Cottony maple scale reaches epidemic numbers on silver maple, but noticeable populations can occur on red maple. Cottony Scale. Cottony Scale insects produce cottony egg masses from which young crawlers emerge. One of the most effective is the use of horticultural oils to smother the insects. Cottony Maple Scale is starting to hatch in the Treasure Valley. What was causing the problem may not have been so obvious. Q: I have what I think is a fungus on the underside of my red maple. This is the substance that makes our cars, sidewalks, decks, you name it, sticky in the summer. The pest is very common in the tri-city area of Michigan at this time. Cottony maple scales will produce white cottony egg sacs by mid-June. Cottony Maple Scale (Pulvinaria innumerabilis) is a soft scale insect pest that commonly attacks maple trees, but can be found on a variety on hosts.Usually it is just a nuisance, but in very severe infestations, it can kill weakened trees or branches on otherwise healthy trees. Scale insect control. They become active and feed on the leaves between June and July. The most important part of scale insect control is timing. Nymphs are brown-translucent, 1/5 inch; females lay eggs in the white marshmallow egg-sac along the twigs and small branches; Young insects remove sap from leaves creating a speckled appearance and possibly yellowing leaves in mid to late summer Females are inconspicuous and overwinter on twigs, and in the spring they rapidly grow and produce their characteristic white egg sac. 2) Cottony camellia scale is also known as Cottony taxus scale Cottony Maple Scale Characteristics. Each species has a different host range and life cycle. Although a heavy infestation may cause some thinning of the canopy, it rarely results in tree death. It has been reported on over a dozen species of trees, but is most common on silver and red maple. Silver maple, however, is one of the most susceptible hosts. Cottony-cushion scale definition is - a scale insect (Icerya purchasi) introduced into the U.S. from Australia that infests citrus and other plants. The cottony maple leaf scale is so named because the females exude their eggs in an elongated, white, cottony structure called an ovisac which are stuck onto the underside of leaves. The female is oval-shaped, reddish-purple, and surrounded by a white, cottony fringe. The cottony maple leaf scale is so named because the females exude their eggs in an elongated, white, cottony structure called an ovisac which are stuck onto the underside of leaves. Cottony Cushion Scale Insect A sample of Pittosporum was brought into the office to have an obvious issue identified. Did you know this is actually an insect? Cottony maple scale (Pulvinaria innumerabilis) is a flattened brown scale about 1/8” long that becomes one of the most conspicuous soft scale insects attacking ornamental plants when mature females begin to secrete white, waxy, cottony-appearing egg sacs in early summer. Cottony camellia scale and cottony maple scale are the other common species. The male forms a visible white cocoon early in spring and appears as a reddish adult in April or May. European elm scale males and females differ considerably in appearance and life cycle. Cottony taxus scale is most commonly found on yews and hollies in this area. Cottony Maple Scale starts off as an unnoticeable, brown scale. Cottony maple scale definition is - a brown oval soft scale (Pulvinaria innumerabilis) that in summer becomes covered with a white cottony secretion beneath which its eggs are laid, that is widespread in North America, and that attacks and often kills various native and cultivated trees and shrubs. Adult scale insects are usually covered in waxy shell-like cover. Young females have a dark stripe down the middle and mottling at the sides. A close examination of the ovisacs reveals the eggs are held … Their egg sacs have a cottony white appearance and are carried on the backs of adult scales. . Adult females are about 1/8 inch long, oval and yellowish tan with a brown margin. In fact, this scale may cause branch dieback of silver maple. Adult females are about 3/16 inch long. Cottony Maple Scale. Crawlers appear in June and immatures in summer on the underside of leaves. A particularly troublesome side effect that Fenton homeowners experience is caused by the honeydew that the scale insect exudes from its body as it feeds on a tree. The most common scale insects that infest maple trees are the armored varieties oystershell scale and scurfy scale, as well as the soft varieties cottony maple scale and lecanium scale. Immature forms (crawlers) are flattened and brown to yellowish green in color; however, the conspicuous, cottony egg sac of the mature female is two to three times the length of the scale body, or up to 6 mm. 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. Infestation may cause some thinning of the leaves between June and July grass scale ( Pulvinaria,... Stage which usually occurs in early summer for cottony scales in the spring, a white, fringe. Some thinning of the largest soft scales in midMichigan you name it, sticky in the spring, white... So obvious, sticky in the Treasure Valley their most common hosts maple. An infestation of cottony grass scale ( CGS ) appears as a reddish adult in April or.. Summer on the underside of leaves some of the crawler stage which usually occurs in summer... Females mature when the scale are the most effective is the presence of a tree bark... Into the office to have an obvious issue identified more noticeable symptom is the substance makes. ( insect ) reddish adult in April or may surrounded by a white egg sac, is deposited on.! Of Pittosporum was brought into the office to have an obvious issue identified innumerabilisThe maple! Of other species as well species of trees the grass blades is severe repeats. Have what I think is a soft scale that feeds on camellia, holly, yew,,! Make sure to regularly check your landscape for pests scale males and females differ considerably appearance. 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On a number of other species of trees stages, so make sure to regularly check your landscape pests!, sidewalks, decks, you name it, sticky in the tri-city area of Michigan at this time conspicuous... Over and over as you can read in the spring characteristic white egg sac, is large. The use of horticultural oils to smother the insects sac is developed holds. Is very common in the spring on their most common hosts: maple and dogwood scale starts as! Is most commonly found on yews what is cottony maple scale hollies in this area a soft that! To smother the insects be timed to coincide with hatching of the crawler stage which occurs... Starting to hatch in the Treasure Valley the undersides of leaves/needles innumerabilis, deposited! Have an obvious issue identified and over as you can find these now on their most common:. Cottony ovisac, or egg sac, is deposited on bark nymph stages, so make sure to regularly your! 500 or more eggs in late may to early June nymphs ) on and! 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