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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 ...
Aulacaspis yasumatsui, or cycad aulacaspis scale (CAS), is a scale insect species in the genus Aulacaspis that feeds on cycad species such as Cycas revoluta [1] or Dioon purpusii (Purpus' cycad). Other common names include the cycad scale, the sago palm scale, [2] and the Asian cycad scale. [3] This is a serious pest of cycads which can kill ...
The adult dendrobium beetle feeds on the Dendrobium plant, especially the leaves, buds, flowers, and seed pods. [2] The adult beetle will also lay eggs on the leaves, buds, flowers, and seed pods of the plant. [2] Once the beetle larvae has hatched, it will proceed to eat through the leaves and stems of the orchid plant. [2]
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Sooty mold caused by scale on a Eucalyptus dives. Sooty mold (also spelled sooty mould) is a collective term for different Ascomycete fungi, which includes many genera, commonly Cladosporium and Alternaria. [1] [2] It grows on plants and their fruit, but also environmental objects, like fences, garden furniture, stones, and even cars.
The adult female scale insect is viviparous, the eggs hatching internally, and produces up to 150 young at the rate of two or three per day.The first-stage larva is mobile and is known as a crawler; it emerges from under the mother's scale and disperses to other parts of the plant; it may be blown by the wind or transported elsewhere by animals and is the only mobile life stage except for the ...
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[11] A study found that the entomopathogenic fungus, Cephalosporium lecanii, was highly effective in controlling coffee green scale. [12] A study examined the effect of the fungus on coffee green scale in combination with lower than normal applications of either of two insecticides, fenthion and phosphamidon. The use of fenthion resulted in the ...