Julia Heliconia Butterfly Egg in a tendrill of a Passion flower creeper. The Julia Heliconia is an orange butterfly found along the periphery of the Gulf of Mexico. Image by Martin Oeggerli. www.micronaut.ch
Large white butterfly egg (Pieris brassicae).
The yellow eggs of the large white butterfly are laid in clusters on the undersides of leaves in the cabbage family. Photograph by Martin Oeggerli. www.micronaut.ch
Scanning electron micrograph of Large White Butterfly (Pieris brassicae) eggs. PSMicrographs. www.psmicrographs.co.uk
Red lacewing butterfly egg micropyle.
At one end of the egg is a complex design, at its center, a minute opening called a micropyle, through which the sperm enters the egg.
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This is where water and air also enter while the egg is developing. Photograph by Martin Oeggerli. www.micronaut.ch
Owl Butterfly Eggs.
Each butterfly egg is surrounded by a hard outer shell, called the chorion, to protect the developing egg. The chorion is lined with a thin coating of wax inside to keep the egg from drying out. Via: myfunnypets.net
Owl Butterfly Egg, close-up.
At one end of the egg is a complex design, at its center a minute opening, called a micropyle, through which the sperm enters the egg. The male passes a sperm packet called a spermatorphore to the female during in flight or on the ground mating. Internal fertilization takes place as the sperm travels down the female’s egg-laying tube and fertilizes each egg as it passes. Photograph by Martin Oeggerli. www.micronaut.ch
Owl Butterfly wing paterns mimic owl’s eyes.
Butterflies in their adult stage can live from a week to nearly a year depending on the species. deviantart.com
Lesser Owl Butterfly Eggs in Colorado.
Butterfly eggs with eyes. Unknown type.
The egg stage lasts a few weeks in most butterflies, but eggs laid close to winter in areas with moderate temperatures, go through a resting stage and the larva will emerge in spring. Other butterflies may lay their eggs in the spring and have them hatch in the summer. Butterflies may have one (in cold climates) or more broods (in tropical climates) per year. Some species of butterflies over winter as eggs, some as caterpillars, some as a pupa (chrysalis), some even over winter as adults. Image via: myfunnypets.net
Adonis blue butterfly egg- Lysandra bellargus.
Photograph by Martin Oeggerli. www.micronaut.ch
Adonis blue butterfly egg.
Photograph by Martin Oeggerli
Great Purple Hairstreak Butterfly (Atlides halesus) eggs on mistletoe leaf (6x) by David Millard of Austin, Texas. nikonsmallworld.com
Reakirt’s blue butterfly (Hemiargus isola) egg on a pink powderpuff bud (Mimosa strigillosa) magnified 6 times. By David Millard of Austin, Texas. nikonsmallworld.com
Blue morpho butterfly egg.
The dark band signals a chemical reaction which occurs after fertilization. Image copyright: firstname.lastname@example.org, www.pbase.com
Question Mark Butterfly Eggs, Polygonia interrogationis (Fabricius), London, Ontario, Canada. A common, medium-sized, orange/black butterfly found in wooded areas and suburbs in the U.S. and Canada. With its wings folded together, it resembles a dead leaf. Image copyright: Jay Cossey. www.photographsfromnature.com
Red admiral butterfly egg in Stinging nettle trichomes (10x). By David Mallard. nikonsmallworld.com
Egg of the butterfly Polygonia c-album on a leaf of Salix caprea. Image by By Gilles San Martin. flickr.com
Eggs of the butterfly Carcharodus alceae (Hesperidae) on a leaf of its host plant Malva sp. Image by By Gilles San Martin. flickr.com
Egg of the butterfly Pararge aegeria with embryo/caterpillar visible inside. You can see through the egg shell, the head capsel (blackish) with the ocelli (eyes), the mandibles (reddish) and the base of the caterpillar body bristles (grayish dots on the lower part). Image by By Gilles San Martin. olympusbioscapes.com
Monarch Butterfly Caterpillar. Young milkweed plants are tender and monarchs often lay their small, ribbed eggs on the underside of an upper leaf (usually one per plant). The first meal a monarch larva eats is its egg shell. It then moves on to nearby milkweed leaf hairs, and then the leaf itself. Photo by Mary Holland. naturallycuriouswithmaryholland.wordpress.com
Monarch Butterfly Caterpillar. From above to this…leaf-gorged critter in a matter of weeks… Photo by David FitzSimmons. curious-critters.com
Monarch egg surface.
Black swallowtail butterfly egg.
Butterfly eggs are fixed to the leaf/plant with a special glue which hardens quickly. The nature of this extremely strong glue is still unknown. Image copyright: Jay Cossey. www.photographsfromnature.com
Eggs for breakfast.
Spicebush Swallowtail (Papilio troilus) Caterpillar.
Copyright Jay Cossey. www.photographsfromnature.com
The butterfly’s life cycle consists of four stages: egg, larva, pupa (chrysalis) and adult. Some species are considered pests in their larval stages as they can damage crops or trees; however, some species are agents of pollination, and the caterpillars of a few butterflies eat harmful insects (e.g., Harvesters).