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Oleander Pit Scale

Scientific Name
Asterolecanium pustulans
Scientific Author
(Cockerell, 1892)
Taxonomy
(Hemiptera: Asterolecaniidae)
Pest Status
0 Unknown
Status
NZ - Exotic
Reliability
High
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Diagnostic Images

Pygidium Dorsal - Adult
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Caption
NZA703. Magnification: 40x.
Source
Qing-Hai Fan MAF
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Diagnostic Images (4)
Diagnostic Notes
Adult Female

8-shaped pores scattered over dorsal surface; marginal 8-shaped pores forming single band around perimeter of body; quinquelocular pores present in submarginal band around body; discoidal pores in band around body near quinquelocular pores; multilocular pores present from near vulva forward to metathorax. Other characters: Legs absent; antennae 1-segmented; without a pygidium; 8-shaped pores prevalent.

Field Characters

Test nearly round or oval, sometimes slightly produced posteriorly; nearly flat to convex in lateral view; brownish or greenish yellow with faint medial and transverse carinae. Marginal and dorsal areas with white or pink wax filaments; dorsal filaments scattered, longer than marginal filaments, marginal filaments conspicuous. Occurring on bark, leaves, and fruit; sometimes in shallow pit.

Juvenile

First instar: Antennae 5- or 6-segmented; with well-developed legs; usually having 8-shaped pores around body margin; having quinquelocular or trilocular pores near the spiracles, membranous anal lobes that are weakly protruding, 2 or 3 narrow sclerotizations occasionally present in the anal area; lacking spiracular setae, pygidial lobes, anal plates, and a denticle on the claw.

Second instar: Antennae unsegmented, without legs. Females look legs and have 1-segmented antennae but otherwise possess the characteristics of the first instar. Second instar males similar to second instar females but usually having invaginated tubular ducts.

References

- Miller, D.R., Rung, A., Venable, G.L. & Gill, R.J. (2007). Scale Insects: Identification tools, images and diagnostic information for species of quarantine significance (CD-ROM). USDA, SEL, APHIS.

- Stehr, F.W. (1997). Immature Insects. Vol. 2. Kendall/Hunt Publishing Company, Iowa, 974 pp.
More Information
Specimen Contact
MAF Plant Health & Environment Laboratory
Author
MAF Plant Health & Environment Laboratory
Created
20/05/2011 10:07 AEST
Last Updated
08/05/2014 00:58 AEST
Citation
MAF Plant Health & Environment Laboratory (2011) Oleander Pit Scale (Asterolecanium pustulans) Updated on 5/8/2014 12:58:22 AM 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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