Butterfly Islands: June 2016

Saturday, 25 June 2016

Back to Bouldnor.

Following the brief sighting of a Silver-washed Fritillary at Bouldnor Forest yesterday, I decided to have another attempt to get a better look at this butterfly today.Things did not look good as shortly after I arrived it started to rain.This has been the way of the weather recently with regular thunderstorms.Eventually the rain stopped and blue sky appeared.It was not to last long, but just long enough for the sun to shine and tempt out some butterflies.Several Silver-washed Fritillaries made for the bamble flowers as did a White Admiral which is a first sighting of the year.

Friday, 24 June 2016

More First Sightings.

The weather continues to remain unsettled and today on the Isle of Wight it was generally cloudy with brief sunny spells and a brisk wind. So perhaps the best place to minimise the effects of that wind was to visit my local forest at Bouldnor.When the sun did appear one or two butterflies took to the wing and I was happy to see my first Silver-washed Fritillary of the season.He was feeding on the ample bramble flowers that are in the forest now, but unfortunately for me he decided to disappear over the hedge and was not to be seen again.However another first of the year was not too far away, for close by a male Ringlet fluttered around hoping to find a good basking place.Along the forest tracks were good numbers of Meadow Brown nectaring on the bramble flowers.

Monday, 13 June 2016

Under The Olive Trees.

Find an olive grove carpeted in wildflowers on any Greek Island and it is certain that a good selection of butterflies will be encountered.The mix of butterflies may depend on the altitude, and the particular spot I came across on Lefkada recently was at sea level.The dominant species were Common Blue along with a favourite of mine, the Clouded Yellow.Other butterflies included Small Copper,Meadow Brown,Brown Argus,Painted Lady,and various Whites.The dark Small Copper below is apparently a form commonly seen in Greece.

Friday, 10 June 2016

Up To West High Down.

At this time in the season a walk up to West High Down via a bridleway can be a chance to see the first Dark Green Fritillaries of the year.There was a report of two Dark Greens on nearby Brook Down a few days ago.However despite my best efforts none was in evidence today.

The bridleway that leads to the Down is sided by brambles and bushes to the north and more open ground to the south which perhaps are old quarry workings.Here, plenty of chalk downland plants grow and bloom which attracts a variety of butterflies due too to its sheltered aspect.The most common species today were Common Blue and Brown Argus although I was surprised to see a pristine Glanville Fritillary.It is somewhat out of its usual area which is a short way down the coast but they do get around and can turn up quite a way inland.As on the Down, there were good numbers of Large Skippers and I also came across a Small Tortoiseshell uploading salts from the track.

Thursday, 9 June 2016

Villa Garden Visitors.

Although butterfly friendly plants were very limited in the extensive garden of our holiday villa on the Greek Island of Lefkada last week, up to fifteen species were noted either in the garden or passing through it.Fortunately the grounds were sided by olive groves and pasture pens,both with a profusion of wildflowers so there was plenty to interest the butterflies.

The villas vast lawn had patches of clover which attracted Long-tailed Blues and Common Blues while a large fig tree at the front housed a couple of Lattice Browns and Speckled Woods.The former nectared from any damaged half ripe fruits while the Speckled Woods competed for the dappled sunny spots around the base of the tree.A small honeysuckle plant on the porch was favoured by a Southern White Admiral and the magnificent flowering geraniums along the length of the rear veranda were visited by Cleopatra's as well as that Geranium Bronze already mentioned in the previous blog entry.

Tuesday, 7 June 2016

Pelargonium Princess.

Or sometimes Pelargonium Pest as the Geranium Bronze butterfly is native of South Africa and has an attraction to this plant either cultivated or wild.It is the only food plant of Cacyreus marshalli and was thought to have been accidentally imported to Europe on geraniums in the late 1980's.Since then it has spread and a few years ago was recorded on the Greek Island of Corfu.Well now it has progressed to Lefkada somewhat south of Corfu as I witnessed last week when I observed a female egg laying in the garden of our holiday villa.

The Adonis Blue

The Large Tortoiseshell

It seems the general view on the status of the Large Tortoiseshell in Britain is that it is now extinct as a breeding butterfly.
It is a butterfly of woodland edges and hedgerows that abound in willows,elms,and poplars.These trees are used by the adult to lay its eggs and this single brood appears in July and August.The emerging butterfly then hibernates over the winter in log piles and hollow trees until the next spring.
On the Isle of Wight sightings are more often than not made from early March to April.Have these butterflies overwintered on the Island or have they come from the continent where it is common?
Any sightings made in July/August pose the same question.Another explanation could be that captive-bred releases are responsible.Only the discovery of eggs and caterpillars will probably answer these questions.

I can now report that evidence has been found of breeding just along the coast at Portland in Dorset (June 2020) and again at the same location in the summer of 2021.

The Glanville Fritillary

This elegant butterfly is mainly confined to the crumbling undercliffs and chalk downs of the Isle of Wight.It is also found on the Channel Islands and at one or two isolated colonies on the British mainland.In Britain the Glanville Fritillary is at the extreme north-western edge of its range.On the continent it is readily found in flowery habitats.
Around the southern shores of the Isle of Wight the cliffs constantly erode causing them to slip away and provide perfect conditions for new growths of the butterflies laval host plant,Ribwort Plantain.
The eggs are laid to the underside of the leaves of this plant and normally hatch after about three weeks.The resulting caterpillars live together in communal webs spun over the plantain.In the autumn they hibernate and recommence feeding in the spring,eventually dispersing to prepare for pupation.
The adult butterfly is on the wing from May to the end of June with the female being larger than the male.They will feed on,amongst other things, Birds-foot Trefoil and Thrift.

The Wall Brown

On the Isle of Wight in particular,the Wall Brown is a butterfly of field edges,coastal cliffs and dunes,and rabbit-grazed downland.
The male is territorial and spends much of the time patrolling and basking on the ground.
The female,which lacks the males conspicuous dark sex brand across the forewings,is larger.The undersides of both sexes are beautifully cryptic when at rest.
The Wall Brown generally produces two broods a year,the first from late April until late June and the second from mid-July to mid-September.