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Chionaspis pinifoliae, the pine needle scale insect, is a common species of scale insect found on pine, spruce and other conifers across Canada and throughout the United States. [1] The species is particularly persistent on planted spruce in the Prairie Provinces in both rural and urban settings. In heavy populations, the needles may appear to ...
Species of spruce trees face assault from insects such as the white pine weevil (Pissodes strobi), Cooley spruce gall adelgid, and the pine needle scale (Chionaspis pinifoliae). The final category of Christmas trees, pines, are commonly susceptible to insect infestation and damage from the pine root collar weevil ( Hylobius radicis ), Zimmerman ...
a) underside of scale showing female and eggs, x24 b) scale upperside, x24 c) female scales on twig d) male scale, x12 e) male scales on twig. Female scale insects in more advanced families develop from the egg through a first instar (crawler) stage and a second instar stage before becoming adult. In more primitive families there is an ...
Toumeyella parvicornis is a soft scale insect in the family Coccidae with a wide host range. It is commonly known as pine tortoise scale because of the characteristic appearance of the mature females, which look like tiny tortoises 4–5mm long. [2]
Spraying pine logs with insecticide against Ips sexdentatus, a pine engraver beetle. Pesticides are substances applied to crops to control pests, they include herbicides to kill weeds, fungicides to kill fungi and insecticides to kill insects. They can be applied as sprays by hand, tractors, or aircraft or as seed dressings. To be effective ...
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone , or in formal botanical usage a strobilus , pl. : strobili , is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads .
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In California, this wasp has been used successfully to control fig scale (Lepidosaphes conchiformis). [8] In Mediterranean areas it is used against oystershell scale (Lepidosaphes ulmi) and in many countries against pine needle scale (Phenacaspis pinifoliae) and aspidistra scale (Pinnaspis aspidistrae). [9]