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Green Shield Scale

Scientific Name
Pulvinaria psidii
Scientific Author
Maskell, 1893
(Hemiptera: Coccidae: Coccinae: Pulvinariini)
Pest Status
0 Unknown
0 Unknown
NZ - Exotic
NZ - Exotic

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Diagnostic Images

Anal Plate - Adult
HEM80 - Slide mounted
Caroline Harding MAF
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Diagnostic Images (7)
Diagnostic Notes
Source: Williams & Watson (1990)

Body of adult female oval, up to 4.5 mm long. Dorsum remaining membranous or only slightly sclerotised at maturity, with numerous areolations present, these large in submarginal zone, minute towards median areas, each areolation associated with a minute pore or with a small tubular duct, present in equal numbers. Antennae each with 8 segments. Legs well developed, each with a tibiotarsal articulatory sclerosis. Marginal setae short, each usually expanded and flattened towards the apex, fimbriated, the tip often wider than the setal collar. Stigmatic setae present in groups of 3, each group with the median seta longer than a lateral seta and longer than a marginal seta. Submarginal tubercles usually numbering up to 8, rarely absent. Spiracles in mature specimens often with a crescentic sclerotised area surrounding each. Anal plates triangular, together quadratic, each plate with 4 apical setae present. Multilocular disc pores, each usually with 10 loculi, present in vulvar region and in loose transverse rows on abdomen, and in groups lateral to coxae. Microducts present on venter around margins, scattered elsewhere. Tubular ducts numerous in a submarginal band and across segments, of 2 main types. One type, each with a thick filament, present mainly in median areas, and another type, each with a long thin filament, present mainly in a submarginal zone. Dorsal setae short and pointed.

Source: [ScaleNet](


Tanaka et al. 2006: 180 (female) [Pulvinaria species of Ryuku archipelago]; Kosztarab 1996: 375 (female) [Northeastern North America]; Tang 1991: 226 (female) [China]; Williams & Watson 1990: 148 (female) [Tropical South Pacific]; Hamon & Williams 1984: 87 (female) [USA, Florida]; Tao et al. 1983: 83 (female) [Taiwan]; Kawai 1980: 148-150 (female) [Japan]; Williams & Kosztarab 1972: 119 (female) [USA, Virginia]; Ezzat & Hussein 1969: 373 (female) [Egypt]; Beardsley 1966: 491 (female) [Micronesia]; Borchsenius 1957: 205 (female) [Palaearctic region]; Zimmerman 1948: 333 (female) [Hawaii]; Green 1909a: 264-265 (female) [Ceylon].
More Information
Specimen Contact
New Zealand Arthropod Collection
Henderson, R. C. & Crosby, T. K.
08/06/2011 01:00 AEST
Last Updated
17/04/2014 03:44 AEST
Henderson, R. C. & Crosby, T. K. (2011) Green Shield Scale (Pulvinaria psidii) Updated on 4/17/2014 3:44:54 AM Available online: PaDIL -
Image Use
Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)