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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.
Male genitalia of Lepidoptera. The main component of the male reproductive system is the testicle, suspended in the body cavity by tracheae and the fat body.The more primitive apterygote insects have a single testis, and in some lepidopterans the two maturing testes are secondarily fused into one structure during the later stages of larval development, although the ducts leading from them ...
Order Thysanoptera includes 5,500 species classified into two suborders distinguished by the ovipositor. Terebrantia have a well-developed conical ovipositor, while the Tubulifera do not. Instead the abdomen is drawn out in the shape of a tube. These insects are called thrips.
Megarhyssa macrurus, also known as the long-tailed giant ichneumonid wasp [1] or long-tailed giant ichneumon wasp, [2] is a species of large ichneumon wasp. [3] It is a parasitoid, notable for its extremely long ovipositor which it uses to deposit an egg into a tunnel in dead wood bored by its host, the larva of a similarly large species of horntail.
The body of a female is c. 2 inches (50 mm) long, with an ovipositor c. 4 inches (100 mm) long. Females of the parasitoid wasp Neoneurus vesculus ovipositing in workers of the ant Formica cunicularia. Parasitized white cabbage larvae showing wasp larvae exiting its body, spinning cocoons. Playback at double speed.
In the majority, however, it is modified for piercing, and, in some cases, is several times the length of the body. In some species, the ovipositor has become modified as a stinger, and the eggs are laid from the base of the structure, rather than from the tip, which is used only to inject venom. The sting is typically used to immobilize prey ...
In all stinging Hymenoptera the sting is a modified ovipositor. [5] Unlike most other stings, honey bee workers' stings are strongly barbed and lodge in the flesh of mammals upon use, tearing free from the honey bee's body, killing the bee within minutes. [ 2 ]
The ovipositor is enclosed and guided by a flexible ovipositor sheath. As in several genera of parasitic wasp, the highly flexible sheath supports the ovipositor's tip during the initial stages of oviposition. [2] [6] In some species, such as Apocrypta westwoodi, the ovipositor has zinc-hardened drill bits. [7]