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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.
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.
The butterflies avoid laying eggs near existing ones, reducing intraspecific competition between caterpillars, which are also cannibalistic, so those that lay on vacant leaves provide their offspring with a greater chance of survival. The stipules thus appear to have evolved as Gilbertian mimics of butterfly eggs, under selection pressure from ...
The top of the egg is depressed and forms a small central cavity called micropyle through which the egg is fertilised. [11] The micropyle is situated on top in eggs which are globular, conical, or cylindrical; in those eggs which are flattened or lenticular, the micropyle is located on the outer margin or rim.
This form of egg production is helpful because larvae are much more vulnerable than adult stages, although they also utilize aposematism. Because many of the nutrients needed to produce eggs are obtained in the adult stage, the larval stage is much shorter and less susceptible to predation.
This neotropical butterfly is found in Central and South America, including the Cerrado which is a vast tropical savanna in Brazil. [5] Other locations include Mexico [2] and Venezuela. [6] Ancestors of the Morpho menelaus butterfly may have been distributed in the Andean regions. [4] Morpho menelaus is one of the six species of Morpho in Costa ...
They lay individual eggs on the underside of the leaves of their food plants. [19] There is no parental investment once the eggs have been laid. The pupae are typically attached to the substrate by the cremaster but with head up held by a silk girdle. The Apollos, however, pupate in debris on the ground and also build a loose cocoon.
Hypolimnas bolina, the great eggfly, [1] [2] common eggfly, [2] varied eggfly, or in New Zealand the blue moon butterfly, [3] is a species of nymphalid butterfly found from Madagascar to Asia [1] and Australia.