Lac Scales

Kerriidae

Classification

Pronunciation

How to pronounce Kerriidae: //ˈkɛri.aɪ.iː//

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Summary

Kerriidae is a family of scale insects known as lac insects or lac scales, valued for their secretion of a resin that is harvested for commercial uses in various industries.

Physical Characteristics

The Kerriidae family members are generally small, often oval or flat in shape, and covered with a waxy coating. This coating can vary in color depending on the species and their environment.

Identification Tips

Identify Kerriidae by their characteristic oval shape and waxy secretions. Look for specific species like Kerria lacca, which is the most commonly cultivated species.

Habitat

Kerriidae are typically found on trees and shrubs in tropical and subtropical regions, often on the bark or leaves where they can secrete their resin.

Distribution

Kerriidae have a wide distribution, with the highest diversity in tropical regions. They are found in many parts of Asia, especially in India and Southeast Asia.

Diet

Kerriidae feed on plant sap by using specialized mouthparts to pierce plant tissues and extract nutrients.

Life Cycle

Kerriidae undergo a complete metamorphosis, including egg, nymph, and adult stages. The nymphs are often more mobile and can disperse to find new hosts.

Reproduction

Reproduction in Kerriidae typically involves sexual reproduction, though specifics can vary among species. The females usually remain attached to the host plant and produce eggs in situ.

Ecosystem Role

Kerriidae play a role in the ecosystem as herbivores and are also involved in the production of lac, which affects various species dependent on it.

Economic Impact

Members of the Kerriidae family, especially Kerria lacca, are economically significant due to their role in lac production, which is used in numerous commercial products including dyes, cosmetics, and varnishes.

Cultural Significance

Lac and shellac have historical importance in art and industry, particularly in traditional crafts and as a component in finishes for wooden objects.

Collecting Methods

  • Manual collection of resinous exudates from host plants
  • Observation and sampling of nymphs and adults from bark and leaves

Preservation Methods

  • Preserving in alcohol for nymph specimens
  • Drying and mounting for adult specimens

Similar Taxa

Misconceptions

There is sometimes confusion about the terms 'lac' and 'shellac,' as they both refer to products derived from Kerriidae resin, but they are used in different contexts and have different processing methods.

Tags

  • Kerriidae
  • scale insects
  • lac
  • Kerria lacca