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Wasps are any of the CRI insects of Hymenoptera and suborder, neither bees nor ants. Apocrita has a common evolutionary ancestor and forms an evolutionary branch. As a whole, wasps do not form evolutionary branches, but they are relative to bees and ants.
The most common wasps, such as the yellow jacket and the Bumblebee, belong to Vespidae. They are sociable and live in a nest with the queen after spawning and non breeding workers. The unusual haploid sex determination system in Hymenoptera is biased towards the real world, because it makes sisters more intimate. However, most wasps are solitary, and each adult female lives and breeds independently. Females usually have an ovipositor, which is used to lay eggs in or near the larva's food source, although in aculeata, ovipositors are often modified into ST's for defense or capture of prey. Wasps play many ecological roles. Some are predators or pollinators, whether they feed themselves or build nests. Many (especially azalea wasps) are scale parasites that lay eggs in the nests of other wasps. Many solitary wasps are parasitic, which means they lay their eggs on other insects (any stage of life from egg to adult) or other insects, and often nest in their hosts. Unlike real parasites, wasp larvae eventually kill their hosts. The solitary wasp parasitizes almost every kind of pest, which makes the wasp play an important role in controlling biological pests such as whitefly in tomato and other crops in horticulture.
Wasps first appeared in the Jurassic Fossil Record, and changed from Cretaceous to many surviving superfamily. They are successful and diverse insects with thousands of descriptive species. In addition to the polar regions, wasps have spread all over the world. The largest social wasp is the Asian Bumblebee, which can be up to 5 cm (2.0 in) long. Among the largest solitary wasps are a group called tarantula chickpeas and megascolia procer in Indonesia. The smallest wasp is the only wasp in the Mymaridae family, including the world's smallest insect, whose body length is only 0.139 mm (0.0055 inch), while the smallest flying insect is only 0.15 mm (0.0059 inch).
Wasps have appeared in classical literature. As the chorus of the same name of the elderly in Aristophanes' 422 B. The name "wasp" has been used in many warships and other military equipment.
Wasps are a diverse group with an estimated 100000 described species worldwide and many more that have not yet been described. For example, there are more than 800 kinds of fig trees, most of them in the tropics, almost all of which have their own specific fig wasps (CHALCIDOIDEA) to pollinate.
Megarhyssa macrurus, a parasite. The female body is C. 2 inches (51 mm) long with ovipositor C. 100 mm (4 in) long
There are many kinds of wasps, all of which are parasitic. Females lay eggs on or in arthropods, and then forage on them. Some larvae are parasitic at first, but at a later stage they become plant tissues that consume their host's food. In other species, these eggs are placed directly in plant tissues and form galls, thus protecting the developing larvae from predators, but not necessarily from other parasitic wasps. In some species, the larvae themselves are predatory. Wasp eggs are deposited in the egg clusters of other insects, and then consumed by the developing wasp larvae.
Tarantula's wasp drags an orange tarantula into the cave. The species has the most painful sting of all wasps.
The largest social wasp is the Asian Bumblebee, which can be up to 5cm (2.0in) long. All kinds of tarantulas, hawks and wasps are similar in size, which can make spiders self weight many times, and can move spiders to caves. This sting will bring great pain to human beings. The only giant side bend with a wingspan of 11.5 cm has subspecies in Sumatra and Java. It is a parasite of chalcosoma atlas, an atlas beetle. The female giant merosaur wasp megarhyssa macrurus is 12.5 cm (5 inches) long and includes a very long but slender ovipositor that can be used to drill into wood and insert eggs.
The smallest wasp is the only wasp in the Mymaridae family, including the world's smallest known insects, dicopomorpha echmepterygis (139 microns long) and kikikiki Huna, whose body length is only 158 microns, which is the smallest known flying insect.
It is estimated that there are 100000 species of fish wasps in the Braconidae and ICHNEUMONIDAE families. These are almost all parasites, mainly using other insects as hosts. Another family, pompilidae, is a parasite of spiders. Some wasps are even parasites of parasites. The eggs of euceros are placed next to the larvae of Lepidoptera, while the larvae of wasps feed on their haemolymph. However, if the parasite appears in the host, the superparasite will continue its life cycle. Parasites maintain their extreme diversity through narrow expertise. In Peru, only 18 species of wasps were found in two kinds of climbing pumpkins, which live on 14 species of flies.
Like all insects, wasps have a hard exoskeleton that protects their three main parts, the head, mesoderm (including the first parts of the chest and abdomen), and edema. Waist narrow, petiole, connecting the first and second parts of the abdomen. Two pairs of membranous wings are fixed together by small hooks, and the front wing is larger than the back wing. In some species, females have no wings. In females, there is usually a rigid ovipositor, which can be modified to inject venom, pierce or cut. It can not only stretch freely, but also retract, and can develop into anti-virus stab, which can defend and paralyze prey.
In addition to their compound eyes, wasps have several simple eyes, called ocelli, which are usually arranged in front of the vertex of the head in the form of a triangle. Wasps have jaw bones that are suitable for biting and cutting, just like those of many other insects (such as the grasshopper), but their other mouthparts form a long snout shaped nose, enabling them to drink nectar.
The larva of wasp is similar to that of wasp, which is suitable for living in a protected environment. It may be a cell in the body or nest of the host organism, in which the larva eats the rest of the food or is fed by adults in the adult species. The larva has a soft body, no limbs, and a cecum (presumably, they don't stain cells).
