Roesel's bush-cricket
Encyclopedia
Roesel's bush-cricket is a European bush-cricket, named after August Johann Rösel von Rosenhof
, a German
entomologist.
Its song is very similar to that of Savi's Warbler
.
the bog bush-cricket).
Its forewings usually reach midway along its abdomen at rest. However there is a macropterous form of this insect (f. diluta), in which the wings reach beyond the tip of the abdomen. This form appears predominantly during hot summers and enables the species to extend its geographical range rapidly while conditions are suitable; such migrations may also be in response to local over-population.
but since about 1980, has spread further than this, colonising as far inland as Buckinghamshire (several colonies spotted around Haversham, Buckinghamshire, in July 2006, which included the macropterous (long-winged) form)
August Johann Rösel von Rosenhof
August Johann Rösel von Rosenhof was a German miniature painter, naturalist and entomologist. With his accurate, heavily detailed images of insects he was recognised as an important figure in modern entomology.-Life:Descendant of a "noble family of Austria", Rösel was born August Johannes Rösel...
, a German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
entomologist.
Its song is very similar to that of Savi's Warbler
Savi's Warbler
The Savi's Warbler, Locustella luscinioides, is an Old World warbler in the grass warbler genus Locustella. It breeds in southern Europe into temperate western Asia. It is migratory, wintering in sub-Saharan Africa....
.
Morphology
Adult insects
Its body length as an adult insect is 15 to 18 mm (0.6–0.7 in). It is brown with a pale margin to the sides of the pronotum (this margin is entire, unlike its congenerCongener
Congener has several different meanings depending on the field in which it is used. Colloquially, it is used to mean a person or thing like another, in character or action.-Biology:In biology, congeners are organisms within the same genus...
the bog bush-cricket).
Its forewings usually reach midway along its abdomen at rest. However there is a macropterous form of this insect (f. diluta), in which the wings reach beyond the tip of the abdomen. This form appears predominantly during hot summers and enables the species to extend its geographical range rapidly while conditions are suitable; such migrations may also be in response to local over-population.
Status in Britain
The species was formerly found only near coasts of southeast and eastern EnglandEngland
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
but since about 1980, has spread further than this, colonising as far inland as Buckinghamshire (several colonies spotted around Haversham, Buckinghamshire, in July 2006, which included the macropterous (long-winged) form)