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Mango Shield Scale

Scientific Name
Milviscutulus mangiferae
Scientific Author
(Green, 1889)
Taxonomy
(Hemiptera: Coccidae)
Pest Status
0 Unknown
Status
NZ - Exotic
Reliability
High
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Diagnostic Images (3)
Diagnostic Notes
Source: Williams & Watson (1990)

Freshly moulted adult female in life yellow-green, becoming brown during oviposition, often with darker flecks or radial bars projecting in from the margin, flat to convex. Slide-mounted specimens oval to pyriform, often rather acute at anterior end, up to 5.0 mm long and 3.4 mm wide; mature specimens becoming moderately sclerotised. Antennae 290-360 µm long, with 6-8 segments present, usually with 7 or 8. Anal plates together kite-shaped, each anterolateral edge 1.75-3.25 times as long as posterolateral edge. Marginal setae each shorter than a central stigmatic seta, usually most with branched or fringed tips, but some simple setae occasionally present.

Dorsal surface with setae 5-17 µm long, at least some clavate or capitate, with blunt or sharp tips. Minute pores fairly numerous, each pore associated with an areolation in mature specimens. Preopercular pores small, numbering 5-35. Submarginal tubercles present, 1-8 on each side.

Ventral surface with short flagellate setae, 1 pair of long prevulvular setae and 2-3 pairs of interantennal setae, up to about 75 µm long. Multilocular disc pores present in vulvar region and often with a few scattered on abdominal segments. Quinquelocular pores in each spiracular furrow present in a staggered row, a few often present just anterior to each spiracle. Ventral tubular ducts of 2 types present: one type, with the filament expanded and the inner end of the duct fairly well sclerotised, variable in numbers, confined to the mesal areas of the head, thorax, and sometimes anterior abdominal segments; the other type, with the filament fairly slender and the inner end of that duct lightly sclerotised, sparsely present in a submarginal zone nearly reaching as far forward as hind coxa.

Source: [ScaleNet](http://scalenet.info)

Good description and illustration of the adult female given by Zimmerman (1948), De Lotto (1957c), Ben-Dov et al. (1975), Tao et al. (1983), Hamon & Williams (1984), Williams & Watson (1990), Tang (1991) and by Hodgson (1994a).

This pest develops three annual generation in the Coastal Plain, Israel; nymphs of the first generation appear in March-May, of second generation in early June, and those of third generation in September (Avidov & Zaitzov, 1960). Reproduction is parthenogenetic, however Otanes (1936) and Avidov & Zaitzov (1960) reported on the occurrence of males at a very low rate. Blumberg & Swirski (1984) studied the encapsulation response to parasitoids. Reported as a mango pest in Israel (Avidov & Harpaz, 1969) and South Africa (Kamburov, 1987). Wysoki et al. (1993) reviewed the biology, economic importance, natural enemies and control in Israel. Buckley & Gullan (1991) showed, in Papua New Guinea, that attendance by the aggressive ant, Oecophylla smaragdina (Fabricius), reduces the rate of parasitization.

Keys

Tang 1991: 77, 244 (female) [China]; Williams & Watson 1990: 121 (female) [Tropical South Pacific]; Hamon & Williams 1984: 78 (female) [USA, Florida]; Tao et al. 1983: 81 (female) [Taiwan]; Kawai 1980: 147 (female) [Japan]; Beardsley 1966: 482 (female) [Micronesia]; Zimmerman 1948: 293 (female) [Hawaii].
More Information
Specimen Contact
New Zealand Arthropod Collection
Author
Henderson, R. C. & Crosby, T. K.
Created
27/05/2011 12:29 AEST
Last Updated
07/07/2011 09:37 AEST
Citation
Henderson, R. C. & Crosby, T. K. (2011) Mango Shield Scale (Milviscutulus mangiferae) Updated on 7/7/2011 9:37:09 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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