Kerria lacca is a species of insect in the family Kerriidae, the lac insects. These are in the superfamily Coccoidea, the scale insects. This species is perhaps the most commercially important lac insect, being a main source of lac, a resin which can be refined into shellac and other products. [1] This insect is native to Asia. [2]

Lac is the resinous secretion of a number of species of lac insects, of which the most commonly cultivated is Kerria lacca. Cultivation begins when a farmer gets a stick that contains eggs ready to hatch and ties it to the tree to be infested. [1] Thousands of lac insects colonize the branches of the host trees and secrete the resinous pigment.

Shellac (/ ʃ ə ˈ l æ k /) [1] is a resin secreted by the female lac bug on trees in the forests of India and Thailand. Chemically, it is mainly composed of aleuritic acid, jalaric acid, shellolic acid, and other natural waxes. [2]

The lac insect is a minute, crawling, scaly insect with suctorial proboscis through which it sucks phloem sap of the host plant twigs. During growth, the insects secrete resinous lac from their body that gradually encases the body of the insect totally in a structure referred to as ‘CELL’ (Fig. 4.1). Life Cycle of Lac Insect:

2023年6月21日 · Lac is a natural resinous secreted by insects called lac insects. Lac culture definition is the scientific management and rearing of lac insects for high-quality lac to be used for commercial purposes are called lac culture.

lac, sticky, resinous secretion of the tiny lac insect, Laccifer lacca, which is a species of scale insect. This insect deposits lac on the twigs and young branches of several varieties of soapberry and acacia trees and particularly on the sacred fig, Ficus religiosa, in India, Thailand, Myanmar (Burma), and elsewhere in Southeast Asia.

…of the tiny lac insect, Laccifer lacca, which is a species of scale insect. This insect deposits lac on the twigs and young branches of several varieties of soapberry and acacia trees and particularly on the sacred fig, Ficus religiosa, in India, Thailand, Myanmar (Burma), and elsewhere in Southeast Asia.…

Lac culture is the scientific management of lac insects to obtain a high amount of quality lac. This involves selection and main­tenance of host plants, inoculation of host plants with healthy lac insects, collection and processing of lac and protection against enemies.

2017年5月24日 · The phytophagous lac insect, Laccifera lacca secretes true lac, the only natural commercial resin of animal origin. Lac is actually secreted for protection by females. It generally infests about 400 plant species and feed on the host tissues. The females are degenerated in form and feeds on the sap of its host plants.

2017年2月14日 · Indian lac insect, Kerria lacca (Kerr), the most important and widely exploited insect for lac cultivation, can further be distinguished into two strains or infra-sub-species forms, the rangeeni and kusmi, on the basis of difference in …