Aulacaspis yasumatsui: Difference between revisions
Cwmhiraeth (talk | contribs) Adding distribution |
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| name = ''Aulacaspis yasumatsui'' |
| name = ''Aulacaspis yasumatsui'' |
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| image = Aulacaspis yasumatsui 5194053.jpg |
| image = Aulacaspis yasumatsui 5194053.jpg |
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| image_caption = |
| image_caption = Cycad aulacaspis scale |
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| regnum = [[Animal]]ia |
| regnum = [[Animal]]ia |
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| phylum = [[Arthropod]]a |
| phylum = [[Arthropod]]a |
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| binomial = '''''Aulacaspis yasumatsui''''' |
| binomial = '''''Aulacaspis yasumatsui''''' |
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| binomial_authority = [[Sadao Takagi|Takagi]], 1977 |
| binomial_authority = [[Sadao Takagi|Takagi]], 1977 |
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| subdivision_ranks = Subspecies |
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| subdivision = |
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{{commons}} |
{{commons}} |
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==Distribution== |
==Distribution== |
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The cycad aulacaspis scale is native to tropical and sub-tropical parts of southeastern Asia. Its range includes Singapore, Malaysia, Thailand and China, and it is also known from the Cayman Islands, Puerto Rico and the US Virgin Islands, and it has |
The cycad aulacaspis scale is native to tropical and sub-tropical parts of southeastern Asia. Its range includes Singapore, Malaysia, Thailand and China, and it is also known from the Cayman Islands, Puerto Rico and the US Virgin Islands, and it has spread to Hawaii and Florida.<ref name=Miller/> In 2007 it was discovered at the [[National Botanical Research Institute]] at [[Lucknow]] in India on ''[[Microcycas|Microcycas calocoma]]'', an endangered species of cycad; this infection was contained and eradicated.<ref name=Bahadur/> |
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==Hosts== |
==Hosts== |
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This scale is restricted in host range to ''[[Cycas]]'', ''[[Dioon]]'', ''[[Encephalartos]]'', ''[[Macrozamia]]'', ''[[Microcycas]]'' and ''[[Stangeria]]'', but of these, it seems to have a preference for ''Cycas''.<ref name=Miller/> |
This scale is restricted in host range to ''[[Cycas]]'', ''[[Dioon]]'', ''[[Encephalartos]]'', ''[[Macrozamia]]'', ''[[Microcycas]]'' and ''[[Stangeria]]'', but of these, it seems to have a preference for ''Cycas''.<ref name=Miller/> Heavy infestations can kill the host plant.<ref name=Bahadur>{{cite book|author1=Bahadur, Bir|author2=Rajam, Manchikatla Venkat|author3= Sahijram, Leela|author4= Krishnamurthy, K.V.|title=Plant Biology and Biotechnology: Volume I: Plant Diversity, Organization, Function and Improvement |url=https://books.google.com/books?id=ubMYCgAAQBAJ&pg=PA353 |year=2015 |publisher=Springer |isbn=978-81-322-2286-6 |pages=353–354}}</ref> |
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== References == |
== References == |
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Revision as of 19:27, 17 April 2017
| Aulacaspis yasumatsui | |
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| Cycad aulacaspis scale | |
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| Species: | A. yasumatsui
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| Binomial name | |
| Aulacaspis yasumatsui Takagi, 1977
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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 and the sago palm scale.[2]
Description
The adult female cycad aulacaspis scale has a flattened, circular or pear-shaped cover, often distorted in shape by the close proximity of leaf veins or other scale insects. The cover is white, and may be translucent enough to see the orange coloured insect with its orange eggs beneath. White or pale yellow shed skins are seen on the margin of the cover. The adult male has an elongated cover with parallel sides; it is white and felted, with shed skins similar in colour to the female. In light infestations, these scales are on the undersides of the leaves, but in heavier infestations they also occur on the upper surface and on the roots, at depths down to about 60 cm (24 in).[2]
Distribution
The cycad aulacaspis scale is native to tropical and sub-tropical parts of southeastern Asia. Its range includes Singapore, Malaysia, Thailand and China, and it is also known from the Cayman Islands, Puerto Rico and the US Virgin Islands, and it has spread to Hawaii and Florida.[2] In 2007 it was discovered at the National Botanical Research Institute at Lucknow in India on Microcycas calocoma, an endangered species of cycad; this infection was contained and eradicated.[3]
Hosts
This scale is restricted in host range to Cycas, Dioon, Encephalartos, Macrozamia, Microcycas and Stangeria, but of these, it seems to have a preference for Cycas.[2] Heavy infestations can kill the host plant.[3]
References
- ^ Aulacaspis yasumatsui (Hemiptera: Sternorrhyncha: Diaspididae), a Scale Insect Pest of Cycads Recently Introduced into Florida. Forrest W. Howard, Avas Hamon, Michael Mclaughlin, Thomas Weissling and Si-lin Yang, The Florida Entomologist, March 1999, Vol. 82, No. 1, pages 14-27 (article)
- ^ a b c d Miller, Douglass R.; Davidson, John A. (2005). Armored Scale Insect Pests of Trees and Shrubs (Hemiptera : Diaspididae). Cornell University Press. pp. 93–95. ISBN 0-8014-4279-6.
- ^ a b Bahadur, Bir; Rajam, Manchikatla Venkat; Sahijram, Leela; Krishnamurthy, K.V. (2015). Plant Biology and Biotechnology: Volume I: Plant Diversity, Organization, Function and Improvement. Springer. pp. 353–354. ISBN 978-81-322-2286-6.