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Tag Archives: common knapweed

September Hillside

24 Sunday Sep 2017

Posted by theresagreen in British hoverflies, Bryn Euryn Nature Reserve, Butterflies of Wales, calcareous grassland, hoverflies, Nature of Wales, North Wales, slugs & snails, Wildflowers of Wales

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Tags

Arion flagellus, common carder bee, common knapweed, eyebright, green-soled slug, hemp agrimony, robin's pincushion, scabious, speckled wood, volucella zonaria, yarrow

September 8th-Bryn Euryn

As I’ve already said, it was mighty windy out here on the not-quite-summit of the hill; not the day for hanging around gazing at the views, no matter how stunning they may be.

Windswept not-quite-summit of Bryn Euryn

A quick look around showed there to be little left in the way wildflowers in bloom, but there was colour on a wild rose – a whole colony of bright red Robin’s Pincushion galls. I don’t recall ever having seen as many on a single plant. The fuzzy growths will gradually fade to brown and the little wasps that cause the growths will emerge in June. If I’m lucky, one of these days I’ll catch them coming out, although the galls also attract ‘squatters’ and there can be a dozen or more species lodging in there!

I was to keen to keep moving, but when I spotted this lovely patch of Eyebright I couldn’t resist stopping again.

The dip between this part of the hill and the slope up to the summit is usually sheltered and offers a brief respite from the wind and the noise of traffic from the A55 below, but not so today. Yarrow likes this spot and there was quite a good large patch of it still in flower here. As with Eyebright, Yarrow is a plant designed to withstand tough growing conditions and is pretty persistent, as anyone that has tried to eliminate it from a lawn will testify; you cut it down and it grows right back! Personally I prefer the ferny-leaved Yarrow to the boring grass! Funny how we discriminate against certain plants, this wildflower Yarrow’s taller-growing golden-yellow flowered relative, Achillea, is a cherished garden plant!

Some insects rather like its flowers too, I found a tiny bee motionless on a flower today and recalled I’d seen a similar looking insect on Yarrow in the Rhiwleddyn reserve a few weeks ago.

Tiny bee on Yarrow – enlarged

On the summit a patch of purple Knapweed was fuelling a few Common Carder bees that were managing to cling on and fly short distances despite the best efforts of the wind to dislodge them. The little bees had varying appearances; some were practically perfect, others a bit more battered, their ‘fur’ worn away and at least one that had a bleached appearance like it had spent too long out in the sun.

Common carder bee-practically perfect
Common carder bee-practically perfect
Common carder bee-a little faded
Common carder bee-a little faded
Common carder bee-fur worn from back
Common carder bee-fur worn from back
Common carder bee-bleached
Common carder bee-bleached

There was another lovely clump of Eyebright up here, this one framed by the distinctively-arranged pods that give the Bird’s-foot trefoil its name.

More Yarrow too, this plant sheltering a tiny fly.

I was hoping that the other side of the hill would be a bit more protected from the wind, but alas, most of it wasn’t. The sun was putting in sporadic appearances though, so at least it felt a bit warmer. Ironically, the sea looked to be calm, was coloured in shades of beautiful blue and its surface merely ruffled. The blades of the wind turbines were motionless.

Looking over in the opposite direction to te sea, the view to the oddly-shaped hill at Deganwy, was fairly clear, although beyond it, Anglesey and the Menai Strait were shrouded in a light haze. I’m not sure if I’ve mentioned it before, but the hill is named the Vardre and gets its unusual appearance from having two rocky summits. It has a little less height than Bryn Euryn, it being 108m, (354 feet) while the Bryn is 131m (365 feet). It was once home to fortifications that included Deganwy Castle.

On the woodland edge leaves are beginning to change colour. Hawthorn is one of the first to go

along with Silver birch as I mentioned in the previous post. Out here in the open it was easier to appreciate the combination of yellow leaves against a clear blue sky.

Next to the Silver birch is a single Whitebeam, which bears berries. The berries are orange in colour now but will gradually turn red.

In the short grass there are still a few Rock-roses in flower and here and there are big fat ‘penny-bun’, or Bolete mushrooms. At least they would have been big and fat before they were nibbled away. I like the different shades and textures such nibbling has left on this one; there was a little black spider on it too.

I have often wondered what nibbled the mushrooms. A picture I took a few weeks ago, at the end of July may have the answer. The sight amused me and I wondered if it was a romantic al-fresco lunch for two? Of course there is more to slugs than meets the eye. No gardener is ever going to welcome them onto their plot, but out in the wild they are another important cog in the wheel of the natural waste-disposal system. Although one slug may look rather like another, there are rather a lot of different species of them in our British Isles. I submitted this image to the very helpful folk that run the Slugs and Snails of the British Isles Facebook Group, who responded that to be accurate they need to see the undersides of the slugs too, but from other features that it is likely they are juvenile Arion flagellus – the Green-soled slug.

poss. Arion flagellus- the Green-soled slug

The bottom of the grassy ‘downland’ hill was still flowery with Hemp Agrimony, Knapweed, touches of Scabious and a sprinkling of Ragwort.

I walked down to where it meets with the woodland edge and lo and behold, for a few glorious minutes the sun came out. Suddenly it was warm and bright and the scene came alive with a whole host of insects vying with one another for the best blossoms.

Speckled wood on Hemp agrimony

I hardly knew where to look first, but then couldn’t resist the sight of a pristine Speckled wood feasting on Hemp agrimony. There were several of them, all looking freshly beautiful; most were nectaring on various flowers while some rested on the leaves of nearby trees basking in the sunshine. The only other butterflies in evidence were Red Admirals which unusually stayed out of range of the camera.

Speckled wood on ragwort

There was a good variety of hoverflies,large and small, a Common wasp and more Common carder bees too.

Hoverfly - Eristalis sp
Hoverfly – Eristalis sp
Hoverfly - Eristalis sp
Hoverfly – Eristalis sp
Hoverfly-Helophilus sp
Hoverfly-Helophilus sp
Common wasp
Common wasp

Common Carder bee on Scabious

Volucella zonaria

A beautiful cast of insects, but the star of today’s show was a big handsome hoverfly, which surprisingly doesn’t have a common name, but whose scientific name, Volucella zonaria makes it sound a bit like an Italian pasta dish. This is the largest British hoverfly and is quite a recent addition to our native list, appearing on the south coast of England during the late 1930s. According to my Hoverfly bible, from there it has spread upwards and outwards across the country as far as Cheshire and Humberside and South Wales in the West. We’re not so far from the Cheshire border here, so they must still be spreading, this is the second one I’ve seen this year, the other was in my daughter’s garden a few weeks ago.

170908-1510-BEICT-Hoverfly-Volucella zonaria 3
170908-1510-BEICT-Hoverfly-Volucella zonaria 5

The spell of sunshine didn’t last long and the wind was still blowing relentlessly; time to set off in the direction of home.

Wind-blown ash tree

 

 

 

 

 

 

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Life in the long grass

10 Sunday Aug 2014

Posted by theresagreen in Bryn Euryn Nature Reserve, bumblebees, Butterflies of Wales, day-flying moths, hoverflies, Nature, Nature of Wales, nature photography, spiders, wildflowers, Wildflowers of Wales

≈ 2 Comments

Tags

Aricia agestis, Brown Argus, butterflies in long grass, common blue, common knapweed, insects in long grass, keeled garlic, moths in the grass, Nursery Web spider, pisaura mirabilis, Polyammatus icarus, small hoverfly with snout, spider that makes web tents in grass

First week

The weather up here in our part of North Wales has been variable this week. We have had a good bit of rain which has freshened everywhere up and just  about enough warm sunshine to allow us to keep the faith that this is indeed high summer. It may not be the perfect weather for people here on holiday, but the local wildflowers and insects seem to be appreciating it.

Habitat: Long meadow grass

There is a whole other world existing in areas where grass is allowed to grow long and during the past couple of weeks I’ve begun to appreciate its importance as a home and a refuge for wildlife, particularly insects and spiders.

All journeys need a starting point and the following journey of discovery into the dimension of long grass began when I went to Bryn Euryn to see if a particular plant was in flower.

I’ve mentioned before that we have a few less-usual species of wildflowers growing in our locality and on Bryn Euryn this is the time to find one of them; the pink/purple flowered Keeled Garlic. I headed for the spot I had seen it in previous years and there it was, buzzing with bumblebees and more surprisingly attracting several beautiful little Common Blue butterflies.

Keeled Garlic

Keeled Garlic

I wondered at the attraction of this particular flower to the butterflies and thought perhaps they were just resting on the tiny flowers to sunbathe. A little later though I came upon another patch of the flowers with more Common Blues fluttering over and settling upon it, so maybe they were taking nectar from them. I was more than happy to see this many of the butterflies in the same place at the same time; I haven’t seen that for a long time.

Male Common Blue butterfly on Keeled Garlic flower

Male Common Blue butterfly on Keeled Garlic flower

Female Common Blue butterfly, looking a bit more worn

Female Common Blue butterfly, looking a bit more worn

I was not the only one to recognise the attraction of insects to the garlic flowers. Lurking on top of her tent-like web, built to protect her eggs and then babies, sat a long-legged Nursery Web spider.

Nursery-web spider-

Nursery Web spider-

Nursery Web spiders are the spinners of the many web ‘tents’ seen in grassy places at this time of year. They take their common name from the way in which they care for their offspring. The female carries her large egg sac beneath her body, held in her jaws. Before the eggs hatch she spins the silken tent around the egg sac and stands guard over them. She remains on duty until the spiderlings are big enough to live independently. The spiders are active hunters and search for prey amongst grasses and low vegetation.

A neighbouring Nursery-web Spider

A neighbour

Walking carefully through the long grass, every step seems to disturb a dry-grass coloured moth. They are so well camouflaged that should you manage to keep track of where they land, it’s not easy to find them again; then if you manage a picture of sorts identifying them afterwards is even harder. The one below, which landed on the pupa of a 6-Spot Burnet moth which I would otherwise not have spotted, maybe Crambus pascuella (?) As always, I’m more than happy to be corrected.

This one landed on the pupa of a 6-spot Burnet Moth

This one landed on the pupa of a 6-spot Burnet Moth

In places amongst the grass knapweed is beginning to open up it tight dark knots of buds to allow the purple brush-head of petals to escape. Knapweed is a hugely important source of nectar for a wide variety of insects, but more about the plant and its visitors later.

Knapweed

Knapweed in long grass

Long grass on dry slope of ‘downland’

The area of long grass at the bottom of the summit slope on the drier, chalkier downland side of the Bryn has a different character to the flatter, damper meadow area. Some species of butterfly you may see here, although found in other parts of the Reserve, show a definite preference for the conditions it offers and may be more numerous. It is especially good for seeing the smaller species that gain protection from predators amongst the grass stems and include Small Heath, Small Skipper, Common Blue and the less-common Brown Argus.

The larval host plant of the Brown Argus is Rock Rose, which has been prolific in its flowering here this year and the leaves of the plants are still evident in the ‘under-story’ of this grassy forest. I was once again lucky with the timing of my visit this week; after a few minutes of pursuing little butterflies through the tangle of dry grass laced across with long outreaching bramble runners, I spotted a newly emerged Brown Argus balanced on top of a dry stem.

Brown Argus-

5/8/14 – Brown Argus- Aricia agestis

It stayed perfectly still, wings outstretched for quite a long time and made no attempt to fly off although I was very close and holding the camera lens just a few inches from it. I was almost certain this was in fact a Brown Argus and not a female Common Blue, but was compelled to wait and hope it would close its wings for me to see its underside. It eventually obliged and although the angle it presented wasn’t the best, thankfully it did confirm its identity with its diagnostic pattern of spots.

Brown Argus underside with 'figure of 8' spots on forewing

My Brown Argus underside with ‘figure of 8’ spots on hind wing

Common Blue male underside

4/8/14-Common Blue male underside

Spot the difference:

Text & diagram from the UK Butterflies web site demonstrates the differences:

Of the two sexes, it is the female Common Blue that causes most confusion with the Brown Argus. The blue present in a female Common Blue is highly variable, with individuals ranging from almost completely blue through to completely brown. It is this latter colouring that causes the most confusion. Even so, the Brown Argus has no blue scales, but may give off a blue sheen from the wings and the hairs found on the thorax and abdomen. Another diagnostic is that the Brown Argus normally has a prominent dark spot in the centre of the forewings.

Brown Argus - Common Blue undersides

Brown Argus on left & Common Blue on right of image

 

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‘But it is the common species that keep the living world ticking over and provide most of our experiences of wildlife, and I would argue that maintaining the abundance of these is as important a conservation priority as maintaining the existence of rarities’. Richard Mabey

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