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A louse's egg is commonly called a nit. Many lice attach their eggs to their hosts' hair with specialized saliva ; the saliva/hair bond is very difficult to sever without specialized products. Lice inhabiting birds, however, may simply leave their eggs in parts of the body inaccessible to preening , such as the interior of feather shafts.
Head louse egg (nit) attached to hair shaft of host. Like most insects, head lice are oviparous. Females lay about three or four eggs per day. Louse eggs (also known as nits), are attached near the base of a host hair shaft. [11] [12] Eggs are usually laid on the base of the hair, 3–5 mm off the scalp surface.
Pubic lice (Pthirus pubis) have three stages: the egg (also called a nit), the nymph, and the adult. They can be hard to see and are found firmly attached to the hair shaft. They are oval and usually yellow to white. Pubic lice nits take about 6–10 days to hatch. The nymph is an immature louse that hatches from the nit (egg).
Itching, caused by an allergic reaction to the bites of the head louse Irritability and difficulty sleeping (head lice are most active in the dark) Sores on the head caused by scratching
The life cycle of the body louse consists of three stages: egg, nymph, and adult. Eggs (also called nits, see head louse nits) are attached to the clothes or hairs by the female louse, using a secretion of the accessory glands that holds the egg in place until it hatches, while the nits (empty egg shells) may remain for months on the clothing ...
Between the treatments, it is advised to wet the hair and comb daily with a louse-comb to remove the hatching lice. If no living lice are found, the treatment was successful, even if nits (eggs) are visible on the hair. If living lice are still present, the treatment is repeated using an anti-louse product with a different active ingredient.
The presence of nits alone, however, is not an accurate indicator of an active head louse infestation. Generally, white nits are empty egg casings, while brown nits may still contain viable louse larva. One way of determining the nit is to squeeze it between two fingernails; it gives a characteristic snapping pop sound as the egg bursts.
Documented Nahuatl words in the Spanish language (mostly as spoken in Mexico and Mesoamerica), also called Nahuatlismos include an extensive list of words that represent (i) animals, (ii) plants, fruit and vegetables, (iii) foods and beverages, and (iv) domestic appliances. Many of these words end with the absolutive suffix "-tl" in Nahuatl.