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Frosted scale

Scientific Name
Parthenolecanium pruinosum
Scientific Author
(Coquillett)
Taxonomy
(Hemiptera: Coccidae)
Status
Exotic Species Occurrence in Australia
Reliability
High
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Diagnostic Images

Dorsal View
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Caption
Vic, Gropstead. Oct 1966, ex twigs of Juglans regia. det R. F. Wilkey
Source
Alice Ames Department of Primary Industries, Victoria
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Diagnostic Images (11)
Diagnostic Notes

Unmounted material: Large brown scale with a covering of powdery white wax. After reaching maturity, the wax covering weathers so that its appearance is similar to the European fruit lecanium (Parthenolecanium corni) and European peach scale (Parthenolecanium persicae).  Second-instar nymphs are light brown and only slightly convex.

Slide mounted  material: Following combination of  characters - 8-12 submarginal duct tubercles on dorsum , numerous dorsal tubular ducts which produce powdery covering, normal type of tubular ducts in  ventral submarginal duct band, dorsal tubular ducts along anal cleft.

More Information
Author
Mali Malipatil and John Wainer
Created
24/05/2007 03:22 AEST
Last Updated
26/06/2007 13:38 AEST
Citation
Mali Malipatil and John Wainer (2007) Frosted scale (Parthenolecanium pruinosum) Updated on 6/26/2007 1:38:45 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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