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Eggs of black-veined white (Aporia crataegi) on apple leaf A butterfly from the genus Euploea, laying eggs underneath the leaf. Butterfly eggs are protected by a hard-ridged outer layer of shell, called the chorion. This is lined with a thin coating of wax which prevents the egg from drying out before the larva has had time to fully develop.
Heliconius ismenius, the Ismenius tiger or tiger heliconian, is a butterfly of the family Nymphalidae found in Central America and northern South America. They are abundant as far south as Ecuador and Venezuela and as far north as southern Mexico, Guatemala and Belize. [2] H. ismenius are more commonly called the tiger-striped long wing butterfly.
Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell.
The butterfly can be seen laying eggs underneath the leaf. Like most insects, the Lepidoptera are oviparous or "egg layers". [ 40 ] Lepidopteran eggs, like those of other insects, are centrolecithal in that the eggs have a central yolk surrounded by cytoplasm .
These are thought to protect the plant as the butterfly avoids laying eggs near eggs already on a host plant, to give her own eggs the best chance of survival. A later example is the mimicking of a mammalian hormone by an ant toxin which causes long-lasting hypersensitivity, Gilbertian mimicry at a molecular level.
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Male genitalia of Lepidoptera. The main component of the male reproductive system is the testicle, suspended in the body cavity by tracheae and the fat body.The more primitive apterygote insects have a single testis, and in some lepidopterans the two maturing testes are secondarily fused into one structure during the later stages of larval development, although the ducts leading from them ...
Unusually for a butterfly, the female does not lay her eggs on the leaves or stem of the caterpillar's food source (in this case violets), but instead one or two meters above the woodland floor in the crevices of tree bark close to clumps of violets. When the egg hatches in August, the caterpillar immediately goes into hibernation until spring ...