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Caterpillar hair has also been known to cause kerato-conjunctivitis. The sharp barbs on the end of caterpillar hairs can get lodged in soft tissues and mucous membranes such as the eyes. Once they enter such tissues, they can be difficult to extract, often exacerbating the problem as they migrate across the membrane. [34]
The following description of the tent caterpillar life cycle is based on that of the eastern tent caterpillar, the best-known species. The details of the life histories of other species vary to a small extent. Tent caterpillars hatch from their eggs in the early spring at the time the leaves of their host trees are just unfolding.
The larval stage of C. catalpae is known as the catalpa or catawba worm. When first hatching, the larvae are very pale, but become darker toward the last instars.The yellow caterpillars will usually have a dark, black stripe down their back along with black dots along their sides.
The life cycle of tiger swallowtail butterflies begins when a female carefully lays individual eggs on different host plants, ensuring that the larvae have enough space and resources to thrive without overcrowding. After hatching, the caterpillar goes through multiple developmental stages.
Gynaephora groenlandica, the Arctic woolly bear moth, is an erebid moth native to the High Arctic in the Canadian archipelago, Greenland and Wrangel Island in Russia. [2] [4] It is known for its slow rate of development, as its full caterpillar life cycle may extend up to 7 years, with moulting occurring each spring. [5]
The caterpillar is large and green with an enlarged head. It has four yellow dots and two false eyes with bluish centers. In profile, this caterpillar appears snake-like. The immature larvae are brown and white to mimic bird droppings, making them unappealing to predators.
The fertilised egg matures and hatches to give a caterpillar. The caterpillar is the feeding stage of the lepidopteran life cycle. The caterpillar needs to be able to feed and to avoid being eaten and much of its morphology has evolved to facilitate these two functions.
The caterpillar lives in a nest that it creates in the trees by folding a leaf over itself and pulling together the two halves with silk. [10] By the time it is ready to undergo metamorphosis, the caterpillar can grow to be up to 5 cm (2 in) long. [10] About a month is needed for the egg to develop into an adult. [10]