Siller Y

The **Siller Y** (*Autographa gamma*) is a migratory moch o the faimily Noctuidae which is namit for the sillery Y-shapit merk on each o its forewings.

## Description
The Siller Y is a middlin-sized moch wi a wingspan o 30 tae 45&nbsp;mm. The wings are intricately patterned wi various shades o broun an grey providin excellent camouflage. In the centre o each forewing thare is a siller-coloured merk shaped lik a letter Y or a Greek letter Gamma. Thare are several different fuirms wi varyin colours dependin on the climate in which the larvae grow.

## Distribution
The species is widespread athort Europe, pairts o Asie, an North Africae. It is resident in the sooth o its range an adults flee amaist throuoot the year. In Hairst variable nummers migrate north reachin as far as Iceland, Greenland, an Finland wi huge invasions takkin place in some years. A seicont wave o migrants arrives in the Simmer. In central Europe an the Breetish Isles adults are present in significant nummers frae Mey onwairds wi nummers dwindlin in late Ware as thay are killed aff bi frosts. Some indwallers flee sooth again tae winter aroond the Mediterranean an Black Seas.

It occurs in a wide variety o habitats, pairticularly open auries. It regularly visits gardens tae tak nectar frae the flouers.

## Life history
Siller Y motcs can produce twa or three generations in a year wi a fowert generation when condeetions are pairticularly guid. The eggs are laid on the upper or lawer surface o leaves. Thay are whitish in colour an hemispherical in shape wi deep ribbin. Thay hatch efter three tae fower days (langer in ceul condeetions).

The larvae are aboot 30&nbsp;mm lang, hae three pairs o prolegs an are uisually green wi whitish markins. Thay feed on a wide variety o law-growin plants an hae been recordit on ower 200 different species includin crops sic as the garden pea (*Pisum sativum*), succar beet (*Beta vulgaris*) an cabbitch (*Brassica oleracea*). Thay can reduce crop yields bi damagin leaves an are aften considered tae be a pest.

The pupa is green at first, gradually darkenin tae black. The adults mate ane or twa days efter emergin frae the pupa an stairt layin eggs ane tae five days later. Thay dee three tae nineteen days efter emergence.

## Ronaldo's moch

Siller Y became famous as Ronaldo's moch, when ane o thaim laundit durin UEFA Euro 2016 Feenal on Portuguese starn fitbaa player Cristiano Ronaldo's face tae drink frae his tears.

## Gallery

File:Autographa gamma-01 (xndr).jpg|*A. gamma* profile
File:Autographa gamma.o1.jpg|*A. gamma* muntit specimen
File:Gamma-uil op wortel zijkant (Autographa gamma on Daucus carota).jpg|Caterpillar on carrot (*Daucus carota*) stem
File:Autographa gamma - 2013-08-04.webm|video o *Autographa gamma* in Hesse, Germany


## References

* Sarah Brook Silver Y ''Autographa gamma'' Linnaeus  Butterfly Conservation (retrieved 06/02/07)
* Robert C. Venette, Erica E. Davis, Holly Heisler, & Margaret Larson (2003) ''Mini Risk Assessment - Silver Y Moth, Autographa gamma (L.)''  (retrieved 29 MAR 2012)
* Paul Waring & Martin Townsend (2004) *Field Guide to the Moths of Great Britain and Ireland*, Breetish Wildlife Publishing, Hampshire.

## Freemit airtins
*Lepiforum 
*Funet Taxonomy
*Fauna Europaea