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Spermathecae are tubes or sacs in which sperm can be stored between the time of mating and the time an egg is fertilized. Paternity testing of insects has revealed that some, and probably many, female insects use the spermatheca and various ducts to control or bias sperm used in favor of some males over others. [1]: 880
Females suspend their egg sacs in their webs; the spherical egg sacs have a tan papery outer layer. [3] Each egg sac contains from 150–200 eggs, with a single female producing 15–20 egg sacs in its lifetime. [citation needed] The spiderlings remain in the mother's web for several days after coming out of the egg sac. [5]
The female deposits her eggs in a globular silken container in which they remain camouflaged and guarded. A female black widow spider can produce four to nine egg sacs in one summer, each containing about 100–400 eggs. Usually, eggs incubate for twenty to thirty days. It is rare for more than a hundred to survive this process.
While the layout of internal genital ducts and openings of the female genitalia depends upon the taxonomic group that insect belongs to, the internal female reproductive system of all Lepidopterans consists of paired ovaries and accessory glands which produce the yolks and shells of the eggs. Female insects have a system of receptacles and ...
Female egg sacs are also greyish-white, closely felted, and open towards the anal end. [3] Eriococcus orariensis female dorsal (upper) and ventral (lower) body surfaces are membranous and irregularly covered in small, inconspicuous, bristle-like structures called setae; although the setae extend in semi-regular rows along the abdominal segments ...
Most insects are oviparous, where the young hatch after the eggs have been laid. [4] Insect sexual reproduction starts with sperm entry that stimulates oogenesis, meiosis occurs and the egg moves down the genital tract. Accessory glands of the female secrete an adhesive substance to attach eggs to an object and they also supply material that ...
While the layout of internal genital ducts and openings of the female genitalia depends upon the taxonomic group that insect belongs to, the internal female reproductive system of all lepidopterans consists of paired ovaries and accessory glands which produce the yolks and shells of the eggs. Female insects have a system of receptacles and ...
Females lay their eggs most commonly in the middle of the summer; these hatch after 3.5 weeks. [3] Females usually die very soon after their eggs have hatched, during their second winter. [20] Young undergo one molt within the egg sac, and emerge after hatching as second instars. They can sustain themselves for a few days with the nutrients ...