Audi A4

The front grill assembly has changed to be full height in the same manner as the Audi A6.
. A limited edition variant first introduced in late 2005, named "DTM Edition", was reintroduced in 2006 as a regular option, the 2.0 Turbo engine now engineered to 220 PS (162 kW) with standard quattro. There is a thriving industry in the collection of wild caught species for amateur and professional collectors. In addition to the carry-over S4, which remained unchanged on the technical side, Audi has reintroduced the RS4 to the lineup, for the first time on the sedan body and with a normally aspirated engine. See the list of list of notable coleopterists for more information. Quattro was available either as an option or standard on most mid- to high-end models, with Multitronic and Tiptronic automatic gearboxes available throught the entire lineup. The study of beetles is called coleopterology, and its practitioners coleopterists.

The new 2.0 TDI engine now combined pompe-düse technology with 16 valves for the first time, while the larger 2.5 TDI was increased to 3.0 L, with 204 PS (150 kW). "Le Scarabée Sacré", the opening essay in Jean-Henri Fabre's famous Souvenirs Entomologiques, deals with the insect. The engine lineup received many additions, the most notable of which was the introduction of Fuel Stratified Injection on the new 2.0 TSFI and 3.2 V6 FSI, respectively capable of 200 and 255 PS (147 and 188 kW), although these engines dropped the five-valve design in favor of the more widely known four valves per cylinder configuration. The amulets were often inscribed with a spell from the Book of the Dead which entreated the heart to, "do not stand as a witness against me.". Nonetheless, the B7 is really a revision of the outgoing B6, and not a ground-up redesign. During and following the New Kingdom, scarab amulets were often placed over the heart of the mummified deceased. Audi introduced a redesigned A4 in late 2004, now riding on the B7 platform, which is completely unique to Audi and not shared with Volkswagen. In many artifacts, the scarab is depicted pushing the sun along its course in the sky.

Borrowing from the Audi A6, the boot was redesigned to remove the extension of the top edge with a smoother fold line, and the taillight assembly now forms part of the top line. Many thousands of amulets and stamp seals have been excavated that depict the scarab. The transmission won considerable praise from the automotive press and is generally regarded as being the best of its type in the world, due to its light weight and promptness in response, but its use was limited to models with a maximum of 310 Nm (229 ft.lbf). The scarab beetle god Khepri was believed to push the setting sun along the sky in the same manner as the beetle with his ball of dung. Audi also introduced a continuously variable transmission developed by LuK, named Multitronic, which replaced the Tiptronic on front wheel drive models. The ray-like antennae on the beetle's head and its practice of dung-rolling caused the beetle to also carry solar symbolism. A year later, Audi reintroduced the S4, now powered by a 344 PS (253 kW) 4.2 L V8, as well as an A4 Cabrio convertible variant, finally replacing the 80-based Audi Cabriolet that had been discontinued in 1998. Therefore they were worshipped as "Khepri", which means "he who came forth." This creative aspect of the scarab was associated with the creator god Atum.

For 2002, Audi upgraded power in the 1.8 Turbo engines to 163 and 190 PS (120 and 140 kW respectively), and in the 2.5 TDI intermediate version to 163 PS. It seemed to the ancient Egyptians that young scarab beetles emerged spontaneously from the burrow where they were born. The Avant arrived in mid 2001. The scarab beetles (family Scarabaeidae) are coprophagous beetles. The 1.9 TDI engine was upgraded to 130 PS and was now available with quattro, while the 2.5 V6 TDI high-end model was introduced with 180 PS (132 kW) and standard quattro. Some farmers introduce beetle banks to foster and provide cover for beneficial beetles. The 1.8  20 valve Turbo was now available in two versions, with 150 or 180 PS (110 or 132 kW), this one with a standard six-speed gearbox, while the naturally aspirated 1.8 L straight-4 and 2.8 L V6 were replaced by 2.0 L and 3.0 L units, still with five valves per cylinder, the most powerful of which was capable of 220 PS (162 kW) and 300 Nm (221 ft.lbf) of torque. There are several serious agricultural and household pests represented by the order, these include :.

The 1.6 L base model remained unchanged, but most other gasoline engines received either displacement increases or power upgrades. See the article subgroups of the order Coleoptera for a complete list of families. An all-new A4 debuted in late 2000, now riding on the B6 platform. The extraordinary number of beetle species poses special problems for classification, with some families consisting of thousands of species and needing further division into subfamilies and tribes. In 1994, Audi debuted an even higher performance model, the RS4, like its predecessor RS2 available only in the Avant body. Their phylogenetic relationship is uncertain, with the most popular hypothesis being that Polyphaga and Myxophaga are most closely related, with Adephaga an outgroup to those two, and Archostemata an outgroup to the other three. In mid 1998, the 1.8T engine available outside Europe had its power output raised to 170 PS (125 kW), while the 12-valve V6 was replaced by the 30 valve unit that had been available in Europe for two years. These suborders diverged in the Permian and Triassic.

New taillights, headlights, door handles, and other minor exterior/interior changes rounded out the cosmetic updates. The four extant suborders of beetle are these:. Besides the introduction of a 2.4 L 30-valve V6 (replacing the outdated 2.6 V6), the most important additions to the range were the 2.5 L V6 TDI engine with 150 PS (110 kW) and standard quattro and a 6-speed gearbox, as well the new high-performance S4, now part of the A4 lineup (the previus S4 had been a Audi 100). Beetles entered the fossil record during the Lower Permian, about 265 million years ago. Audi refreshed the model in the 1997 Frankfurt Motor Show, with sales beginning in Europe in early 1998. Many species, including lady beetles and blister beetles, can secrete poisonous substances to make them unpalatable. The transmission is a "manumatic", meaning it offers the driver a choice of driving the car as either an automatic or a clutchless manual. Large ground beetles by contrast will tend to go on the attack, using their strong mandibles to forcibly persuade a predator to seek out easier prey.

Audi also debuted their new Tiptronic transmission on the B5 platform, based on the unit Porsche developed for their 964-generation 911. A number of longhorn beetles (family Cerambycidae) bear a striking resemblance to wasps, thus benefitting from a measure of protection. This technology was added to the V6 family in 1996, starting with the 2.8 L V6 30V, which now pumped 193 PS (142 kW). These include the leaf beetles (family Chysomelidae) that have a green colouring very similair to their habitat on tree leaves. A turbocharged version produced 150 PS (110 kW) and 210 Nm (155 ft.lbf) of torque. Many employ simple camoflage to avoid being spotted by predators. At the time, besides Audi, the Ferrari F355 was the only production automobile in the world with a five-valve head design. Beetles and larvae have evolved to employ a variety of different strategies for avoiding being eaten.

The Audi A4 was the first model in the Volkswagen Group to feature the new 1.8 L 20V motor with five valves per cylinder, based on the unit Audi Sport had developed for their Supertouring race car. Generally the number of eggs laid is an indicator of the level of parental care subsequently employed, as they are inversely proportional. A wide range of engines were available to European customers, ranging between 1.6 L and 2.8 L, including a 1.9 L Diesel available with VW's new "pumpe-düse" technology, capable of achieving a then high power value of 110 PS (81 kW), although Audi's 2.8 L V6, carried over from the old 80/90 was the only engine option in North America until 1998. There are other notable ways of caring for the eggs and young, such as those employed by leaf rollers, who bite sections of leaf causing it to curl inwards and then lay the eggs, thus protected, inside. The Avant station wagon arrived a year later. It ranges from the simple laying of eggs under a leaf to scarab beetles, which construct impressive underground structures complete with a supply of dung to house and feed their young. Like the Passat, it had a longitudinally-mounted engine and standard front wheel drive, although the vast majority of A4s Audi sells come optioned with their quattro all wheel drive system. As befitting such a large order, the parental care between species varies widely.

Audi debuted the model in 1995 on Volkswagen's B5 platform, which it shared with the fifth generation Volkswagen Passat. During pairing sperm cells are transferred to the female to fertilise the egg. . Pairing is generally short but in some cases will last for several hours. It was introduced in 1995, replacing the Audi 80 (called the Audi 4000 in North America) and Audi 90. Many beetles are territorial and will fiercly defend their small patch of territory from intruding males. The Audi A4 is a midsize luxury car made by Audi. Conflict can play a part in the mating rituals for example in species such as burying beetles (genus Nicrophorus) where localised conflicts between males and females rage until only one of each is left, thus ensuring reproduction by the strongest and fittest.

Smell is thought to play significant importance in the location of a mate. Beetles may display some extremely intricate behaviour when mating. Adults have an extremely variable lifespan, again, from weeks to years. The larval period of beetles varies between species but can be as long as several years.

Predaceous diving beetles (family Dytiscidae) may be the most common example, they employ a technique of retaining air when diving between the abdomen and the elytra. Various techniques are employed by many species for retaining both air and water supplies. The beneficial impact to the general ecology of these two activities is huge. Decaying organic matter is a primary diet for many species, this can range from dung which is consumed by coprophagous species such as the scarab beetles (family Scarabaeidae), to dead animals which are eaten by necrophagous species such as the carrion beetles (family Silphidae).

Ground beetles (family Carabidae) and rove beetles (family Staphylinidae) are entirely carnivorous and will catch and comsume small prey such as earthworms and snails. Others are generalists, eating both plants and animals. Some beetles are highly specialised in their diet; for example, the Colorado potato beetle (Leptinotarsa decemlineata) opts almost entirely to colonize plants of the potato family (Solanaceae). There are few things that a beetle somewhere will not eat, even inorganic matter may be consumed.

In some cases there are several transitory larvae stages and this is known as hypermetamorphosis; examples include the blister beetles (family Meloidae). As with lepidoptera, beetle larvae pupate for a period, and from the pupa emerges a fully formed beetle or imago. Once the egg hatches the larvae tend to feed voraciously, whether out in the open such as with Ladybird larvae, or within plants such as with leaf beetle larvae. The eggs of beetles are minute but may be brightly coloured, they are laid in clumps and there may be from several dozen to several thousand eggs laid by a single female.

The larva of a beetle is often called a grub and represents the principal feeding stage of the life-cycle. Beetles are endopterygotes with complete metamorphosis. Although beetles have blood, it is not used for oxygen transference, although a heart is present. Pumping movements of the body force the air through the system.

Oxygen is taken in via a tracheal system: this takes air in through a series of tubes along the body which is then taken into increasingly finer fibres. Antennae can vary greatly and may be filiform, claviform, flabellate or genticulate. The dorsal appendage aids the beetle in stalking prey. The eyes are compound, and may display some remarkable adabtability, as in the case of the Whirligig beetles (family Gyrinidae), in which the eyes are split to allow a view both above and below the waterline.

The bodies of beetles are divided into three sections, the head, the thorax, and the abdomen, and these in themselves may be composed of several further segments. In a few families, both the ability to fly and the wing-cases have been lost, with the best known example being the "glowworms" of the family Phengodidae, in which the females are larviform throughout their lives. After landing, the hindwings are folded below the elytra. In some cases the ability to fly has been lost, characteristically in families such as Carabidae and Curculionidae.

The elytra are not used in flying, but generally must be raised in order to move the hindwings. Beetles are generally characterised by a particularly hard exoskeleton, and the hard wing-cases (elytra) which tend to cover the hind part of the body and protect the second wings, the alae. Bearing in mind the wide diversity and number of species the anatomy of beetles is quite uniform. .

Certain species are agricultural pests in some areas, for example the Colorado potato beetle (Leptinotarsa decemlineata), while other species are important controls of agricultural pests, for example the lady beetles (family Coccinellidae) consume aphids, fruit flies, thrips, and other plant-sucking insects that damage crops. They have a major impact on the ecosystem in three ways: feeding on plants and fungi, breaking down animal and plant debris, and eating other invertebrates. Beetles can be found in almost all habitats, but are not known to occur in the sea or in the polar regions. Haldane, a British geneticist, was asked what his studies of nature revealed about God, he replied, "An inordinate fondness for beetles".

S. B. This is why, when J. Estimates put the total number of species — described and undescribed — at between 5 and 8 million.

Forty percent of all described insect species are beetles (about 350,000 species), and new species are regularly discovered. Their order, Coleoptera (meaning "sheathed wing"), has more species in it than any other order in the entire animal kingdom. Beetles are one of the main groups of insects. The Coleopterist (UK).

Harde, A Field Guide in Colour to Beetles ISBN 0706419375 Pages 7-24. W. K. Thomas, American Beetles (CRC Press, 2001-2).

and Michael C. Arnett, Jr. Ross H. Engel, Evolution of the Insects ISBN 0521821495.

David Grimaldi, Michael S. Entomological Society of America, Beetle Larvae of the World ISBN 0643055061. Poul Beckmann, Living Jewels: The Natural Design of Beetles ISBN 3791325280. Large ground beetles (family Carabidae) are predators of caterpillars and, on occasion, adult weevils, whereas smaller species attack eggs, small caterpillars, and other pest insects.

While both adult and larval lady beetles found on crops prefer aphids, they will, if aphids are scarce, use food from other sources, such as small caterpillars, young plant bugs, aphid honeydew, and plant nectar. The larvae of lady beetles (family Coccinellidae) are often found in aphid colonies. Citrus long-horned beetle. Asian long-horned beetle.

It is most usual for death watch beetle attacks to originate in timber of large dimensions, and it is thought that the actual introduction of the pest into buildings takes place at the time of construction. It attacks hardwoods such as oak and chestnut, and always where some fungal decay has taken or is taking place. The death watch beetle (Xestobium rufovillosum) is of some considerable importance as a pest of wooden structures in older buildings in Britain. The spread of the fungus by the beetle has led to the devastastation of elm trees in many parts of the Northern Hemisphere, notably North America and Europe.

They are important elm pests because they carry Dutch elm disease (the fungus Ophiostoma ulmi) as they move from infected breeding sites to feed on healthy elm trees. The elm bark beetles, Hylurgopinus rufipes and Scolytus multistriatus (in the family Scolytidae) attack elm trees. Crops are destroyed and the beetle can only be treated by employing expensive pesticides, many of which it has begun to develop immunity to. As well as potatoes, this can be any one of a number of plants from the potato family (Solanaceae) such as nightshade, tomato, aubergine and capsicum.

Adults mate before overwintering deep in the soil, so that when they emerge the following spring, females can lay eggs immediately, once a suitable host plant has been found. The Colorado potato beetle (Leptinotarsa decemlineata) is a notorious pest of potato plants. Myxophaga contains about 100 described species in four families, mostly very small, including skiff beetles (Hydroscaphidae) and minute bog beetles (Sphaeriusidae). Archostemata contains four families of mainly wood-eating beetles, including reticulated beetles (Cupedidae) and telephone-pole beetles (Micromalthidae).

In these beetles the testes are tubular and the first abdominal sternum (a plate of the exoskeleton) is divided by the hind coxae (the basal joints of the beetle's legs). Adephaga contains about 10 families of predatory beetles, includes ground beetles (Carabidae), predacious diving beetles (Dytiscidae) and whirligig beetles (Gyrinidae). These beetles can be identified by the cervical sclerites (hardened parts of the head used as points of attachment for muscles) absent in the other suborders. Polyphaga is the largest suborder, containing more than 300,000 described species in more than 170 families, including rove beetles (Staphylinidae), scarab beetles (Scarabaeidae), blister beetles (Meloidae), stag beetles (Lucanidae), and true weevils (Curculionidae).