Mae’n hawdd peidio â gweld ein glöyn byw brodorol lleiaf i gyd, yn rhannol oherwydd ei faint a’i liw tywyll, ond yn rhannol hefyd oherwydd na ddeuwn o hyd iddo’n aml ond ar glytiau bach o laswelltir cysgodol lle mae ei unig blanhigyn bwyd, sef Meillion Melyn (Bysedd Mair), i’w weld yn tyfu.

The Tissue moth has a slightly glossy appearance to the upperside and often has a purplish tinge.

Flight Times

Flies in August and September, overwintering in this stage, reappearing in April and May.

Size and Family

  • Family – Geometridae

  • Medium Sized

  • Wingspan Range – 34-48mm

Conservation Status

  • UK BAP: Not listed

  • Local

The English name of the Twenty-plume Moth is something of a misnomer, as each wing is separated into 6 'plumes'. The scientific name is more accurate, meaning 'six-fingered'.

The only British member of its family, the moth is nocturnal and attracted to light.

Flight Times

Flies all-year-round.

Size and Family

  • Family – Alucitidae

  • Small Sized

  • Wingspan Range – 14-16mm

Conservation Status

  • UK BAP: Not listed

  • Fairly common

The females of the Pale Brindled Beauty are completely wingless, or apterous, a feature which is often found in moths which emerge in the winter months.

This species shows marked melanism, the black form f. monacharia being commoner than the typical form in certain parts.

Flight Times

Males fly from January to March, searching for the females which have climbed up tree-trunks.

Size and Family

  • Family – Geometridae

  • Medium Sized

A species of autumn and spring, the Red-green Carpet can be seen in September and October before hibernating as an adult and flying again in the early spring.

The adult moth has a subtle combination of reddish and green colours which can sometimes appear to change, depending on the light.

Flight Times

Flies in September and October, hibernating as an adult and flying again in early spring.

Size and Family

  • Family – Geometridae

  • Small/Medium Sized

A migrant species that can sometimes arrive in large influxes with other migrants.

The Rusty Dot Pearl has multiple generations each year, usually spending winter as a pupa in the soil.

Caterpillars can reach a length of 10–15 millimetres (0.39–0.59 in. The adult moth flies at night and is attracted to light.

Flight Times

Primarily a migrant species to the UK but can be found at almost any time of the year.

Size and Family

  • Family – Crambidae

  • Small Sized 

One of our more common winter moths, especially during mild spells, and can be found feeding at sallow blossom in early spring

Flight Season

Flies from September through to May.

Size and Family

  • Family – Noctuidae
  • Small Sized
  • Wingspan Range – 28-36mm

Conservation status

  • UK BAP: Not listed
  • Common

Caterpillar Food Plants

Caterpillars feed on the foliage of a range of trees, including birch (Betula) and oak (Quercus).

A variable species but most often encountered as a reddish-brown ground colour with white or orange reniform stigmata. The small 'satellites' either side of the stigma can be obscure, especially in worn individuals.

Adult moths are attracted to sugar and light.

Flight Season

Flies from September through to April in one generation.

A variable species, with some strongly-banded individuals, others plain brownish with darker speckling. The females are completely wingless. Overwinter as an egg.

Flight Season

Flies from October into December in one generation.

Similar to other species and can be very difficult to separate on markings alone, especially as some show marked melanism.

Caterpillars can be found in late spring.

Flight Season

Flies from late September to November in one generation.

Size and Family

  • Family – Geometridae
  • Medium Sized
  • Wingspan Range – 38-44mm

Conservation status

  • UK BAP: Not listed
  • Common

Caterpillar Food Plants

Caterpillars feed on a variety of trees and shrubs.

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