Agrilus
Agrilus sp. by Reitter 16: A. biguttatus 17: A. Guerini 18: A. sinuatus 19: A.subauratus 20: A. viridis 21: A. caeruleus 22: A. Roberti 23: A. angustulus
Agrilus is a genus of beetles in the family Buprestidae ( Buprestidae ). It is with about 3,000 species, the largest genus of the subfamily of Agrilinae and even the largest genus in the entire animal kingdom. When Joy Harde - Lohse 39 species are enumerated for Central Europe, fauna Europaea leads about a hundred species.
Appearance and behavior of individual species vary considerably. The following statements relate to the Central European species of the genus.
Most species of the genus are legally well protected in accordance with Federal Species Protection Ordinance. An exception Agrilus biguttatus and Agrilus viridis.
Remarks about the name
The genus Agrilus was erected by the Englishman Curtis 1825. He characterized mainly by the construction of the sensor and the mouthparts. For the description of the rest of the body, he uses a different font. He takes the name of Megerle. The names of Megerle does not recognize, with few exceptions.
The declaration of the genus Agrilus name is uncertain. Schenkling provides its declaration ( AltGr. Άγρα Agra, hunting, prey, and είλω Eilo, gather ) with a question mark. A reference to characteristics of the species of the genus is not recognizable.
Characteristics of the genus
The genus Agrilus shows the morphological characteristics of the jewel beetle. The last section of the legs, the tarsi are five-membered ( Tarsenformel 5-5-5 ). Here, the first Hintertarsenglied is at least as large Agrilus together the following three Tarsenglieder. The claws on the last Tarsenglied have at the base of a tooth that is short in the females, broad and blunt. In the males, the teeth of the jaws are used for classification into different claw types.
The Vorderhüfthöhlen are not closed at the back, the front hips ( Praecoxa ) are spherical and by an extension of the front chest ( Prosternalfortsatz ) wide separated. In Agrilus this extension is stripped pointed, bridges the middle chest to the rear edge so that it is separated into two halves appears ( Figure 2).
The rear hips ( Metacoxa ) close to the lower breast to ( Metasternum ) and for the partial accommodation of the rear leg ( Metatibia ) eroded. Externally, the Metacoxen are strongly broadened in Agrilus ( Fig. 2).
Of the five sections on the underside of the abdomen ( sternite ), the first two are fused and form in Agrilus the widest and longest visible abdomen section. The following sternites narrowing a straight line, the last is rounded in the form of a circular cutout and has a groove on the edge.
The head is short, seen from above, more than twice as wide as long. The eyes are located laterally, its posterior edge is parallel to and at a short distance to the pronotum. The eleven-membered sensors are turned in at about the level of the eyes lower border. At least the middle limbs are sawed.
The side of the pronotum extends below the actual margin a keel- like elevation, which rises at the back angle or until further forward in the margin. This keel is as the side edge to the front edge of the pronotum, the distance between the edge and keel increases ( double side edge of the pronotum, Figure 1). Above the side edge runs alongside the rear angle usually another keel ( Fig. 3). The base of the pronotum is emarginate in front of both elytra and in front of the scutellum.
The scutellum is large and has almost always a cross keel. The elytra have lateral part of the abdomen uncovered. They extend from the shoulders initially parallel to inwardly swung backwards, then narrows linearly. The conclusion is different in different species. Often, the elytra are rounded rear and serrated individually.
Differentiating features for the species
For determining the number of types of the coloring is of minor importance. She is always metallic green, blue or purple and varies greatly within species. Among the Central European species, there are three that have the white spots on the wing covers. These are caused by dense fields of standing white hair.
The shape of the front chest extension between the front hips, the height of the inwardness of the sensor with respect to the eyes lower margin, the shape of the trough of the last sternite, the conclusion of the elytra and the shape of the financial statements of the front chest toward the head are important particulars.
The shape of the tooth on the claws are used in males to determine.
In the Fauna Germanica the species of the genus are characterized as difficult and can only be distinguished with great attention
Biology
The larvae (Fig. 4) develop in all kinds of dicotyledonous plants (trees, shrubs, grasses ) and in all its parts (roots, rhizomes, stems, branches). The larvae of European species live both in and under the bark of live or injured plants. The laid eggs are coated with a secretion of the beetles to prevent drying. The beetles are host specific. Therefore, it can in many species in forestry and agriculture come to mass occurrence and damage to the host plant. Whether different feeding plants always correspond to different morphological forms and whether it is species or only to races, is still partially unknown.
The beetles can be found on the plants on which the eggs are laid, often gregarious. From here, perhaps the scientific name declares ( ( gr ) agrios "rural " ile " troop " ),
System
The genus Agrilus is represented in Europe with about 100 species.
- Agrilus acutus
- Agrilus alazon
- Agrilus albogularis
- Agrilus Andresi
- Agrilus angustulus
- Birch borer ( Agrilus anxius )
- Agrilus asiaticus
- Poplar borer ( Agrilus ater)
- Agrilus aurichalceus
- Small linden borer ( Agrilus auricollis )
- Agrilus australasiae
- Agrilus beauprei moriguesi
- Two Punk Tiger oak borer ( Agrilus biguttatus )
- Agrilus bilineatus
- Agrilus bonvouloiri
- Agrilus chrysostictus
- Edged narrow borer ( Agrilus cinctus )
- Agrilus Continuatus
- Agrilus convexicollis
- Agrilus cuprescens
- Agrilus cyaneoniger
- Agrilus cyanescens
- Agrilus curtulus
- Agrilus cytisi
- Blue narrow borer ( Agrilus delphinensis )
- Vine - borer ( Strong Hairy narrow jewel beetles, Agrilus derasofasciatus )
- Agrilis Desertus
- Agrilus detractus
- Agrilus discalis
- Agrilus dualis relegatus
- Agrilus elegans
- Agrilus Fortunatus
- Agrilus furcillatus
- Agrilus gestroi
- Agrilus giglii
- Haarstirniger narrow borer ( Agrilus graminis )
- Agrilus grandis
- Agrilus granulatus
- Guerin narrow borer ( Agrilus guerini )
- Agrilus hastulatus
- Agrilus hastulifer
- Agrilus hattorii
- St. John's narrow borer ( Agrilus hyperici )
- Agrilus imitans
- Agrilus impexus
- Daphne - borer ( Agrilus integerrimus )
- Agrilus italicus
- Agrilus Cuban
- Agrilus lacustris
- Agrilus laticornis
- Agrilus lecontei
- Agrilus lineola
- Agrilus liragus
- Agrilus macer
- Agrilus marozzinii
- Agrilus Mastersi
- Agrilus melonii
- Agrilus nubeculosus
- Agrilus obscuricollis
- Agrilus olivicolor
- Agrilus otiosus
- Agrilus perrieri
- Agrilus pilosovittatus
- Agrilus pistaciophagus
- Agrilus politus
- Red-blue poplar borer ( Agrilus pratensis)
- Agrilus pratensis meridionalis
- Agrilus pretiosissimus
- Agrilus pulchellus
- Agrilus purpuratus
- Currant narrow borer ( Agrilus ribesi )
- Agrilus roscidus
- Agrilus ruficollis
- Agrilus rugatulus
- Acute-angled narrow borer ( Agrilus salicis )
- Agrilus schoutedeni
- Agrilus shasamboe
- Birnprachtkäfer, flash worm or fruit tree borer ( Agrilus sinuatus )
- Agrilus Solieri
- Agrilus somniculosus
- Agrilus Squalus
- Gold Green narrow borer ( Agrilus subauratus )
- Agrilus subazureus
- Agrilus subcurtulus
- Agrilus subnubilus
- Agrilus subrobustus
- Agrilus sulcatus
- Suvorovs narrow borer ( Agrilus suvorovi )
- Agrilus tempestivus
- Agrilus thoracic
- Agrilus tibialis
- Agrilus torpedo
- Blue-green narrow borer ( Agrilus viridicoerulans )
- Agrilus viridiobscurus
- Book - jewel beetles or hardwood borer ( Agrilus viridis)
- Agrilus viscivorus