Parasaissetia nigra

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Parasaissetia nigra (click on image to enlarge it)
Source: Central Science Laboratory, Harpenden Archive, British Crown - IPM Images

Parasaissetia nigra (Nietner, 1861) - (nigra scale)

This scale has a world-wide distribution and is polyphagous, infesting many plants, including fruit trees and ornamentals. It may cause sooty moulds which results in crops having a reduced market value or are unsalable. The adult scale is dark-brown to black, strongly curved, and 3-4 mm long. However, there is considerable variation in colour and size. Females reproduce mainly parthenogenetically and males are rare. There may be up to 6 generations per year.

Synonyms:
Saissetia nigra

Vernacular names
• Deutsch: schwarze Napfschildlaus
• English: nigra scale
• Español: escama negra
• Português: cochonilha-escama-ovalada