LAC INSECTS

Prepared by T. Madhavan & K. Chandrasekaran, Lecturers in Zoology, Directorate of School Education., Pondicherry.

An Illustration for the students who aspire for medical studies.



LAC INSECTSLAC INSECTS

• Lac is the resinous protective secretion produced by a kind of scale insect called laccifer lacca.

• They secrete a brown resinous substance called the lac.

• The minute red coloured larva of this insect settles on succulent shoots of the host plants.

• While growing they secrete a resinous material which covers them.



LAC INSECTS

• The important trees needed for lac encrustation are the kusum, the ber, palas, babul, and sal.

• These trees are common in the western ghats.

Lac bug



USES OF LAC

• Lac is one of the most versatile natural resinous material.

• It is useful in the plastics, electrical , adhesive, leather, wood finishing and other industries .

• In the electrical industry it is used in the form of insulating varnishes and moulded insulators.

• It possesses very good adhesion to mica.



It is an ingredient of varnishes, polishes, finishes wood used for protective and decorative purposes.

It is a principal ingredient of sealing wax.

-- also used in the manufacture ofprinting and water proof inks,

optical frames, glazed paper, dental plates, wax crayons, nail polishes, ammunition,

and bangles.

USES OF LAC

LAC INSECTS

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