''Hemistola chrysoprasaria'', the small emerald, is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

of the family

Geometridae The geometer moths are moths belonging to the family Geometridae of the insect order Lepidoptera, the moths and butterflies. Their scientific name derives from the Ancient Greek ''geo'' γεω (derivative form of or "the earth"), and ''met ...

. The species can be found in all

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

including the

Iberian Peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...

and

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

East to the

Ural Mountains The Ural Mountains ( ; rus, Ура́льские го́ры, r=Uralskiye gory, p=ʊˈralʲskʲɪjə ˈɡorɨ; ba, Урал тауҙары) or simply the Urals, are a mountain range that runs approximately from north to south through western ...

North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

Asia Minor Anatolia, tr, Anadolu Yarımadası), and the Anatolian plateau, also known as Asia Minor, is a large peninsula in Western Asia and the westernmost protrusion of the Asian continent. It constitutes the major part of modern-day Turkey. The re ...

Transcaucasia The South Caucasus, also known as Transcaucasia or the Transcaucasus, is a geographical region on the border of Eastern Europe and Western Asia, straddling the southern Caucasus Mountains. The South Caucasus roughly corresponds to modern Arme ...

and the mountains of Eastern Asia (

Russian Far East The Russian Far East (russian: Дальний Восток России, r=Dal'niy Vostok Rossii, p=ˈdalʲnʲɪj vɐˈstok rɐˈsʲiɪ) is a region in Northeast Asia. It is the easternmost part of Russia and the Asian continent; and is admini ...

Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part of ...

), (

Amur The Amur (russian: река́ Аму́р, ), or Heilong Jiang (, "Black Dragon River", ), is the world's List of longest rivers, tenth longest river, forming the border between the Russian Far East and Northeast China, Northeastern China (Inne ...

Ussuri The Ussuri or Wusuli (russian: Уссури; ) is a river that runs through Khabarovsk and Primorsky Krais, Russia and the southeast region of Northeast China. It rises in the Sikhote-Alin mountain range, flowing north and forming part of the Si ...

) and China

Tian Shan The Tian Shan,, , otk, 𐰴𐰣 𐱅𐰭𐰼𐰃, , tr, Tanrı Dağı, mn, Тэнгэр уул, , ug, تەڭرىتاغ, , , kk, Тәңіртауы / Алатау, , , ky, Теңир-Тоо / Ала-Тоо, , , uz, Tyan-Shan / Tangritog‘ ...

(as form ''lissas'')

Description

The

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

is 28–32 mm. Both forewings and hindwings are light-green coloured, but fade with increasing life span to yellow-green to yellow-white. There is an outer and a fainter inner, slightly curved and continuous, white cross line on the front wings. The inner (antemedian) is strongly curved and usually with two small, slight teeth directed distad, the outer (postmedian) is nearly parallel with distal margin, not dentate. The outer line continues on the hindwing. There is no discal stain. The antennae of the males are slightly combed, those of females short ciliate. In Amur and Ussuri the specimens are often large and with the lines rather widely separated. ''Lissas'' differs in the shape of the hindwing, which is rounded instead of elbowedProut , L.B. 1912–16. Geometridae. In A. Seitz (ed.) The Macrolepidoptera of the World. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart. The fresh egg is green color and discolours into dark tints just before hatching. It is very flattened on both sides. The egg pole is lateral The caterpillars show a variable cryptic coloration. They are green at first, then brownish during hibernation and green again in spring. The pupa has a green colour.

Biology

The moths fly in one generation from June to August. . The larvae feed on ''

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 stems, deciduous leaves, and scented greeny-white flo ...

''. Habitats include edges of woods, hedges areas as well as gardens and parks. It prefers warm slopes.

Subspecies

*''H. c. chrysoprasaria'' Central Europe, South Europe, South Russia, South Urals - SouthEast Siberia, Turkey, Caucasus, Georgia, *''H. c. lissas'' Prout, 1912 Tianshan *''H. c. intermedia'' Djakonov, 1926 mountains (South Siberia) *''H. c. occidentalis'' Wehrli, 1929 South Spain, South Portugal, Morocco, Algeria, Tunisia

Sister species

Allopatric Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from ...

with '' Hemistola siciliana'' (Prout, 1935) (Middle and South Italy, Sicily)

Notes

#''The flight season refers to the

British Isles The British Isles are a group of islands in the 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 and Outer Hebrides, the Northern Isles, ...

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

References

External links

Small emerald on UKmothsLepiforum.de
Hemitheini Moths of Europe Moths of Asia Taxa named by Eugenius Johann Christoph Esper Moths described in 1794 {{Geometrinae-stub