Genus Glycaspis
White Lerp Insect
White Fibrous Lerp Insect
Genus Spondyliaspis
Shell Lerp Insect
Genus Hyalinaspis
Clam Lerp Insect
Clam Fibrous Lerp Insect
Brown Clam Lerp Insect
Genus Acizzia
Wattle Plant Lice
Other Psyllids


Black Scale - Parasaissetia nigra

Family Coccidae

This page contains pictures and information about Black Scale that we found in the Brisbane area, Queensland, Australia.
Scale length 5mm 
Black Scale
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In the above picture there are the black adult females, some pale-yellow slightly smaller later instars and some small pale-yellow crawlers (1st instars).  Nigra scale is parthenogenetic and they are no males.
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Above pictures show the Black Scales and their predator Orange-spotted Ladybird. We took those pictures on a Citrus plant. The ladybird came to examine the Black Scale and encountered an ant. When the ladybirds hunt for scale insects, they will encounter different species of ants. Those ants come for the honey-dew from the scale insect. The ladybird helmet shape of wing-covers protect them those ants. They sit with legs and antenna hidden under the wing-covers. The ants just cannot do anything about them.

1. Insects of Australia and New Zealand - R. J. Tillyard, Angus & Robertson, Ltd, Sydney, 1926, p174. 


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Last updated: October 15, 2010.