''Abraxas sylvata'', the clouded magpie, is a

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 ...

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 ...

that was named by

Giovanni Antonio Scopoli Giovanni Antonio Scopoli (sometimes Latinisation of names, Latinized as Johannes Antonius Scopolius) (3 June 1723 – 8 May 1788) was an Italians, Italian physician and natural history, naturalist. His biographer Otto Guglia named him the "first ...

in 1763.

Description

This moth is mostly white with brownish patches across all of the wings. There are small areas of pale gray on the

forewing Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly. They are found on the second and third thoracic segments (the mesothorax and metathorax), and the two pairs are often referred to as the forewings and hindwi ...

s and

hindwing Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly. They are found on the second and third thoracic segments (the mesothorax and metathorax), and the two pairs are often referred to as the forewings and hindw ...

s. They resemble

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

droppings Feces (also known as faeces or fæces; : faex) are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relatively small amount of ...

while resting on the upper surface of leaves. The wingspan is 38 mm. to 48 mm. The wings are thinly scaled and partially transparent, with a white ground colour. The forewings are yellow-brown at the base and have a large, yellow and black spot at the dorsal edge, otherwise scattered, light grey spots, some of which form a cross-band in the outer part of the wing. The hindwings have a yellow and black spot at the edge of the inner edge, otherwise scattered, light grey spots. The larva has black and yellow longitudinal stripes. (MHNT) Abraxas sylvata - Dříň (Kladno) Czech Republic - Male dorsal.jpg, ♂ (MHNT) Abraxas sylvata - Dříň (Kladno) Czech Republic - Male ventral.jpg, ♂ △ (MHNT) Abraxas sylvata - Dříň (Kladno) Czech Republic - Female dorsal.jpg, ♀ (MHNT) Abraxas sylvata - Dříň (Kladno) Czech Republic - Female ventral.jpg, ♀ △

Subspecies

*''Abraxas sylvata sylvata'' *''Abraxas sylvata microtate'' Wehrli, 1931 (Japan)

Biology

The adults fly from late May to early August. They are attracted to light. The moth is

nocturnal Nocturnality is a ethology, behavior in some non-human animals characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite. Nocturnal creatur ...

and is easy to find during the day. They are easy to find resting during the morning. The moth starts being active at early

dusk Dusk occurs at the darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before nightfall.''The Random House College Dictionary'', "dusk". At predusk, during early to intermediate stages of twilight, enoug ...

. The moths eat the plants ''

Betula A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech- oak family Fagaceae. The genus ''Betula'' contains 3 ...

Corylus Hazels are plants of the genus ''Corylus'' of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family, Betulaceae,Germplasmgobills Information Network''Corylus''Rushforth, ...

Fagus Beech (genus ''Fagus'') is a genus of deciduous trees in the family Fagaceae, native to subtropical (accessory forest element) and temperate (as dominant element of Mesophyte, mesophytic forests) Eurasia and North America. There are 14 accepted ...

Ulmus Elms are deciduous and semi-deciduous trees comprising the genus ''Ulmus'' in the family Ulmaceae. They are distributed over most of the Northern Hemisphere, inhabiting the temperate and tropical- montane regions of North America and Eurasia, ...

Prunus ''Prunus'' is a genus of flowering plant, flowering trees and shrubs from the family (biology), family Rosaceae. The genus includes plums, cherries, peaches, nectarines, apricots and almonds (collectively Drupe, stonefruit). The genus has a cosm ...

'', and ''

Frangula ''Frangula'' is a genus of about 35 species of flowering shrubs or small trees, commonly known as alder buckthorn in the buckthorn family Rhamnaceae. The common name buckthorn is also used to describe species of the genus '' Rhamnus'' in the same ...

''.

Caterpillar Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths). As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder ...

s appear from mid-July to early October. They

overwinter Overwintering is the process by which some organisms pass through or wait out the winter season, or pass through that period of the year when "winter" conditions (cold or sub-zero temperatures, ice, snow, limited food supplies) make normal activ ...

as a

pupa A pupa (; : pupae) is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages th ...

. The body of the caterpillar is distinctive because it is marked with longitudinal black and yellow stripes. The caterpillars feed on

wych elm ''Ulmus glabra'', the wych elm or Scots elm, has the widest range of the European elm species, from Ireland eastwards to the Ural Mountains, and from the Arctic Circle south to the mountains of the Peloponnese and Sicily, where the species reac ...

and European elm. The pupa hibernates underground. The caterpillars live on several deciduous trees such as ''

Fagus sylvatica ''Fagus sylvatica'', the European beech or common beech, is a large, graceful deciduous tree in the Fagaceae, beech family with smooth silvery-gray bark, large leaf area, and a short trunk with low branches. Description ''Fagus sylvatica'' i ...

Ulmus glabra ''Ulmus glabra'', the wych elm or Scots elm, has the widest range of the European elm species, from Ireland eastwards to the Ural Mountains, and from the Arctic Circle south to the mountains of the Peloponnese and Sicily, where the species reach ...

, and

Ulmus procera The field elm (''Ulmus minor'') cultivar 'Atinia' , commonly known as the English elm, formerly common elm and horse may, Republished 1978 by EP Publishing, Wakefield. and more lately the Atinian elm, was, before the spread of Dutch elm dis ...

''.

Distribution and habitat

The species can be found from Europe to

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. The moth can be found in forests, thickets, and sometimes parks on various

deciduous tree In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, after flo ...

Other

Abraxas grossulariata ''Abraxas grossulariata'' is a moth of the family Geometridae, native to the Palearctic realm and North America. Its distinctive speckled coloration has given it a common name of magpie moth. The caterpillar is similarly coloured to the adult, a ...

'' is similar to this species. In a group of specimens of this species, the largest one is 60 mm. while the smallest one is 31 mm. The moth is more common in the East

than in Europe. The species is listed as a priority species in the

United Kingdom Biodiversity Action Plan The United Kingdom Biodiversity Action Plan (UK BAP) was the UK government's response to the Convention on Biological Diversity, opened for signature at the Rio Earth Summit in 1992. The UK was the first country to produce a national Biodiversi ...

Gallery

Calospilos sylvata larva.jpg, Larva Calospilos sylvata pupa.jpg, Pupa Britishentomologyvolume6Plate515.jpg, Illustration from

John Curtis John Ream Curtis (born May 10, 1960) is an American politician serving since 2025 as the junior United States senator from Utah. A member of the Republican Party, Curtis served from 2017 to 2025 as the U.S. representative for Utah's 3rd congre ...

's ''

British Entomology ''British Entomology'' is a classic work of entomology by John Curtis (entomologist), John Curtis, Linnean Society of London, FLS. It is subtitled ''Being Illustrations and Descriptions of the Genera of Insects found in Great Britain and Ireland: ...

'' Volume 6

References

External links

Clouded Magpie on UKMothsBioLibLepiforum.deWaarneming.nl
{{Taxonbar, from=Q2126088 Abraxini Moths described in 1763 Moths of Europe Moths of Asia Taxa named by Giovanni Antonio Scopoli