''Idaea rusticata'', the least carpet, is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

of the family

Geometridae The geometer moths are moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyleti ...

. The species was first described by

Michael Denis Johann Nepomuk Cosmas Michael Denis, also: ''Sined the Bard'', (27 September 1729 – 29 September 1800) was an Austrian Catholic priest and Jesuit, who is best known as a poet, bibliographer, and lepidopterist. Life Denis was born at Schärdin ...

and

Ignaz Schiffermüller Jeremias "Johann" Ignaz Schiffermüller (; 2 November 1727 – 21 June 1806) was an Austrian naturalist and Jesuit teacher who took a special interest in the Lepidoptera. In order to describe the colours of butterflies, he also looked for a syste ...

in 1775.

Distribution

This species can be found in most of Europe, in the

Near East The Near East () is a transcontinental region around the Eastern Mediterranean encompassing the historical Fertile Crescent, the Levant, Anatolia, Egypt, Mesopotamia, and coastal areas of the Arabian Peninsula. The term was invented in the 20th ...

and in

North Africa North Africa (sometimes Northern Africa) is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region. However, it is sometimes defined as stretching from the Atlantic shores of t ...

. From the Balkan Peninsula, the occurrence continues across the

Palearctic The Palearctic or Palaearctic is a biogeographic realm of the Earth, the largest of eight. Confined almost entirely to the Eastern Hemisphere, it stretches across Europe and Asia, north of the foothills of the Himalayas, and North Africa. Th ...

though Ukraine, southern Russia and Asia Minor to the Caucasus and from there via northern Iran, Afghanistan, Turkmenistan, Kyrgyzstan to the Central Asian mountains as far as Mongolia. Of all moths in Britain it showed the greatest percentage increase in abundance between 1968 and 2007, and expanded its range beyond the vicinity of London.

Habitat

These moths inhabit wastelands, open places, parks and well exposed gardens.

Description

''Idaea rusticata'' has a

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

of 19–21 mm. The length of the forewings is 9–11 mm. The edges of the wings are fringed. The basic colour is whitish or cream, sometimes with a very light brownish tone. The upperside of the forewings shows in the midfield a dark brown to red-brown transverse drawing, with a point-shaped black spot, always within the dark field. This brown marking runs from the front to the rear edge. The upperside of the hindwings is light grey, with darker grey transversal lines. The base of the anterior margin is darkened brown. Also in the hindwings is presents a black point in the discal cell.Gianluca Dorem
Altervista
/ref> The eggs are oval and relatively small. The caterpillar is rather short, becomes thinner towards the hind end, and shows distinct constrictions. It is grey brown or brown and has a narrow, light line on the back. The abdomen is brightly coloured. The head is small and black coloured. The pupa is light brown and has a glossy surface.

Biology

It is usually a

univoltine Voltinism is a term used in biology to indicate the number of broods or generations of an organism in a year. The term is most often applied to insects, and is particularly in use in sericulture, where silkworm varieties vary in their voltinism. ...

species. In southern Europe, under favourable circumstances, a second generation can also be formed. The second generation is significantly smaller. The adults fly at night from July to August, and are attracted to light. The larvae mainly feed on ivy (''

Hedera ''Hedera'', commonly called ivy (plural ivies), is a genus of 12–15 species of evergreen climbing or ground-creeping woody plants in the family Araliaceae, native to Western Europe, Central Europe, Southern Europe, Macaronesia, northwestern ...

'') and traveller's joy (''

Clematis vitalba ''Clematis vitalba'' (also known as old man's beard and traveller's joy) is a shrub of the family Ranunculaceae. Description ''Clematis vitalba'' is a climbing shrub with branched, grooved Plant stem, stems, deciduous leaves, and scented green ...

''). and withered leaves of other herbaceous plants. #''The flight season refers to the

British Isles The British Isles are an archipelago in the Atlantic Ocean, North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner Hebrides, Inner and Outer Hebr ...

. This may vary in other parts of the range.''

References

*Axel Hausmann: The Geometrid moths of Europe, 2. Sterrhinae. In A. Hausmann ''The Geometrid Moths of Europe 2''. Apollo Books, Stenstrup 2004,

External links

''Moths and Butterflies of Europe and North Africa''''Lepiforum e.V.''''De Vlinderstichting''

''Lot Moths''''Nature Spot''
{{DEFAULTSORT:Idaea Rusticata Idaea Moths described in 1775 Moths of Africa Moths of Asia Moths of Europe Taxa named by Michael Denis Taxa named by Ignaz Schiffermüller