Gwelir y glöyn byw mawr grymus hwn fel rheol yn hedfan yn chwim uwchben y rhedyn neu’r tyfiant isel mewn llennyrch yn y coed. Tra’u bod yn hedfan mae hi bron yn amhosibl gwahaniaethu rhwng gwrywod y rhywogaeth hon a rhai’r Fritheg Werdd, sydd yn aml yn cydrannu’r un cynefinoedd. Ond mae’r ddwy rywogaeth yn ymweld yn aml â blodau megis Ysgall a Mieri, lle mae’n bosibl gweld y marciau gwahaniaethol ar du isaf yr adennydd. Nid oes gan y Fritheg Werdd y ‘perlau’ â chylch lliw oren o’u cwmpas sydd ar du isaf adenydd cefn y Fritheg Frown.
Can be similar to Dark Crimson Underwing, but is usually smaller with a lighter and more variegated forewing.
Like most other British Catocala species, this moth can be attracted to light as well as sugar.
Flight Season
Flies between July and August.
Size and Family
- Family: Underwings
- Large Sized
- Wing Span Range (male to female) - 60-65mm
Caterpillar Food Plants
Caterpillars feed on Oak (Quercus)
Habitat
Oak woodland.
A large-winged, sombre-coloured moth, the adults are not readily attracted to light but are frequent at sugar.
Flight Season
Flies from July to August in one generation.
Size and Family
- Family – Noctuidae
- Large Sized
- Wingspan Range – 55-65mm
Conservation status
- UK BAP: Not listed
- Local
Caterpillar Food Plants
Caterpillars feed on blackthorn (Prunus spinosa) and other trees and shrubs.
Not found in the UK.
Size and Family
- Family: Swallowtails
- Size: Large
- Wing Span Range (male to female): 70-90mm
Conservation Status
- Butterfly Conservation priority: N/A
- European Status: Vulnerable
Caterpillar Foodplants
Caterpillars feed on stonecrop (Sedum species)
Habitat
Diverse - rocky and stony places and vineyards in hills and mountains.
Extinct from the UK. The Black-veined White was first listed as a British species in 1667 but this large butterfly became extinct in the British Isles around 1925 with its last remaining stronghold in the south-east of England.
It was always considered a rarity in the British Isles but on the continent, it is often very common.
The female is known to rub her wings together and loses many of her scales by doing so, resulting in an almost-transparent look when compared with the white wings of the male. The reason behind this unusual behaviour is not known.
Not found in the UK.
Size and Family
- Family: Nymphalids
- Size: Large
- Wing Span Range (male to female): 65-90mm
Conservation Status
- Butterfly Conservation priority: Low
- European Status: Not threatened
Caterpillar Foodplants
Caterpillars feed on leaves of the Strawberry tree (Arbutus unedo)
Habitat
Wooded hillsides with plenty of foodplant but can sometimes be found in town centres.
Not found in the UK. There have been several records of this butterfly in the UK from over the past 150 years but the species is not considered to be migratory and their presence has been attributed to passage by ship.
Not found in the UK. There are two forms of this magnificent butterfly - the blue form ilia and the orange-brown form clytie, the latter is more commonly encountered in southern regions of its distribution.
This is a large and distinctive butterfly, even in flight, as the white wing borders are unmistakable. The adults live solitary and, as such, migrate singly rather than in the swarms associated with other migrant species.
The Rosy Underwing is superficially similar to the native Red Underwing but is slightly smaller and paler looking. Comes to sugar and sometimes to light.
No evidence of breeding in the British Isles but in Europe, the caterpillars can be found between May and June.
There are less than two dozen records from the UK with the first from Shoreham, Sussex in 1875. First recorded on the Channel Islands in 2002 where it is now thought to be resident.
Flight Season
Flies from July to September in one generation, immigrants to the UK can be seen from August.