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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 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 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 ] They are capable of folding their metasoma up against their head and thorax, covering most of their legs and lower head.
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 ...
A female can lay 100–200 eggs in her lifetime. [14] Aedes females drop their eggs singly, on damp mud or other surfaces near water; their eggs hatch only when they are flooded. [ 19 ] Females in genera such as Culex , Culiseta , and Uranotaenia lay their eggs in floating rafts.
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Segments 8 and 9 bear the genitalia; segment 10 is visible as a complete segment in many "lower" insects but always lacks appendages. Most female insects have an egg-laying tube, or ovipositor; it is absent in termites, parasitic lice, many Plecoptera, and most Ephemeroptera. Ovipositors take two forms: