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Lac tubes created by Kerria lacca. 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 product
Kerriidae is a family of scale insects, commonly known as lac insects or lac scales.Some members of the genera Metatachardia, Tachardiella, Austrotacharidia, Afrotachardina, Tachardina, and Kerria are raised for commercial purposes, though the most commonly cultivated species is Kerria lacca.
The word lac is derived from the Sanskrit word lākshā '(लाक्षा) representing the number 100 thousand, which was used for both the lac insect (because of their enormous number) and the scarlet resinous secretion it produces that was used as wood finish, lacquerware, skin cosmetic, ornaments and dye for wool and silk in ancient India and neighbouring areas.
The bugs have killed millions of ash tress across the country, and all 16 species of the tree are susceptible to attack, according to the Texas A&M Forest Service.
They can be generally referred to as phasmatodeans, phasmids, or ghost insects, with phasmids in the family Phylliidae called leaf insects, leaf-bugs, walking leaves, or bug leaves. The group's name is derived from the Ancient Greek φάσμα phasma , meaning an apparition or phantom , referring to their resemblance to vegetation while in fact ...
The adult sycamore lace bug is milky white in colour and between 3.2 and 3.7 mm (0.13 and 0.15 in) in length. It is similar in appearance to the cotton lace bug (Corythucha gossypii) and the Florida oak lace bug (Corythucha floridana), but lacks the brown crescent-shaped band on the carina (ridge on the body-wall) of the former and is larger than the latter.
The cause was found to be hormones found in the native balsam fir tree (Abies balsamea) used to manufacture paper and related products in America, and in some other North American conifers. This hormone happened to have a profound effect on P. apterus , but not on other insect species, showing the diversification of hormone receptors in the ...
Like all giant isopods, of which there are around 20 species, B. Vaderi is a carnivore and prefers feeding on crustaceans, fish, squid, and even whale carcasses.. In turn, giant isopods are a ...