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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).
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and sucking sap. Crawlers often get carried away by the wind, landing on neighbouring plants and infesting them. In a heavy infestation, the fronds of cycads become covered with a thick white layer of scale insects. Even when the adult insects die, they remain attached to the host. Heavy infestations
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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
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The cycad aulacaspis scale is native to tropical and sub-tropical parts of southeastern Asia. It was first described in 1977 by Tagaki in
Thailand, and its range also includes Singapore, Malaysia and China, and it is also known from the Cayman Islands, Puerto Rico and the US Virgin Islands. More
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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
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stage has legs and is known as a "crawler". The juveniles then develop through several other instar stages over a period of about twenty-eight days before reaching maturity. All life stages after the crawler stage feed on the host plant by piercing the
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can kill the host plant, and insects present on the roots can re-infest the aerial parts of the plant if the scales there are killed.
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recently, it was first detected in
Florida in 1996 and had spread to Hawaii by 2000. It was discovered at the
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Plant
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Adult females lay one hundred or more eggs and these hatch in eight to twelve days. The first
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Bahadur, Bir; Rajam, Manchikatla Venkat; Sahijram, Leela; Krishnamurthy, K.V. (2015).
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Armored Scale Insect Pests of Trees and Shrubs (Hemiptera : Diaspididae)
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285:This scale is restricted in host range to
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423:. Springer. pp. 353–354.
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683:Taxa named by Sadao Takagi
673:Insects described in 1977
668:Insects of Southeast Asia
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44:Scientific classification
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38:Cycad aulacaspis scale
24:Cycad aulacaspis scale
197:cycad aulacaspis scale
645:Aulacaspis yasumatsui
476:Aulacaspis yasumatsui
455:Aulacaspis yasumatsui
271:in India in 2007, on
207:species in the genus
192:Aulacaspis yasumatsui
173:Aulacaspis yasumatsui
458:at Wikimedia Commons
241:. This is a serious
274:Microcycas calocoma
16:Species of true bug
154:A. yasumatsui
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630:Open Tree of Life
468:Taxon identifiers
452:Media related to
430:978-81-322-2286-6
239:Asian cycad scale
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578:iNaturalist
249:Description
231:cycad scale
127:Diaspididae
678:Diaspidini
662:Categories
642:ScaleNet:
347:References
312:Microcycas
306:Macrozamia
237:, and the
210:Aulacaspis
140:Aulacaspis
98:Suborder:
67:Arthropoda
340:epidermis
318:Stangeria
148:Species:
115:Coccoidea
91:Hemiptera
50:Kingdom:
596:10851494
500:BugGuide
485:Wikidata
203:), is a
122:Family:
62:Phylum:
55:Animalia
557:2087616
491:Q771508
362:article
329:Biology
269:Lucknow
134:Genus:
86:Order:
79:Insecta
74:Class:
622:670931
583:199419
544:AULSYA
531:835938
505:236697
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335:instar
233:, the
183:, 1977
181:Takagi
635:65538
609:18756
591:IRMNG
323:Cycas
294:Dioon
288:Cycas
281:Hosts
215:cycad
195:, or
617:NCBI
565:GISD
552:GBIF
539:EPPO
518:JQJS
425:ISBN
393:ISBN
315:and
243:pest
604:ISC
570:814
526:EoL
513:CoL
267:at
223:or
201:CAS
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