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Ovipositor of long-horned grasshopper (the two cerci are also visible). The ovipositor is a tube-like organ used by some animals, especially insects, for the laying of eggs.In insects, an ovipositor consists of a maximum of three pairs of appendages.
The terminalia of adult female insects include internal structures for receiving the male copulatory organ and his spermatozoa, and external structures used for oviposition (egg-laying). Most female insects have an egg-laying tube, or ovipositor; it is absent in termites, parasitic lice, many Plecoptera, and most Ephemeroptera.
The internally retracted metasomal segments are genital or egg-laying tubes. [2] The female sting apparatus has been modified into an egg-laying tube and they cannot sting in defense. [2] The metasoma acts as a mechanism for protection when entering a host nest. [5]
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.
The sperm, when released from the capsule, swims directly into or via a small tube (the 'ductus bursae') into a special seminal receptacle (the 'spermatheca'), where the sperm is stored until it is released into the vagina for fertilisation during egg laying, which may occur hours, days, or months after mating. The eggs pass through the ovipore ...
The egg is not retained in the body for most of the period of development of the embryo within the egg, which is the main distinction between oviparity and ovoviviparity. [1] Oviparity occurs in all birds, most reptiles, some fishes, and most arthropods. Among mammals, monotremes (four species of echidna, and the platypus) are uniquely oviparous.
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Once the spider is ready to lay eggs, the C. brunnea larva will quickly move into the sticky fluid the spider is using to construct the egg sac and thus the larva becomes trapped within the sac. Inside, the larva will use its specially adapted sucking tube (made from its maxilla and mandibles) to feed off the spider eggs within the sac. [3]