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~ a celebration of nature

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Category Archives: insects

The gliders of Slade Wood

09 Tuesday Jul 2024

Posted by sconzani in insects

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British butterflies, butterfly, Limenitis camilla, Slade Wood, White admiral

Last Thursday I took my annual train trip to Severn Tunnel Junction to look for White admirals in nearby Slade Wood, one of the few sites for this butterfly in Wales and the closest to me.

240709 white admirals (1)

And, despite it being very windy and not particularly warm, I was not disappointed.

240709 white admirals (2)

Three of these gorgeous gliders were seen along a side track where it was somewhat sheltered, but I saw none at all along the main ride, probably because of the weather conditions (seven White admirals had been seen the previous weekend when it had been sunny and still).

240709 white admirals (3)

The White admiral (Limenitis camilla) adults feed on the blossom of Brambles and on honeydew, whereas their caterpillars feed on Honeysuckle so both plants are essential for a colony of these gliding beauties to thrive.

240709 white admirals (4)

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Heterotoma planicornis

08 Monday Jul 2024

Posted by sconzani in insects

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British bugs, British insects, Heterotoma planicornis, Heterotoma planicornis nymph, plant bugs

Though I had never seen one of these before, with those flattened parts of its antennae there was no mistaking this little insect. This is Heterotoma planicornis, a tiny member of the Miridae family of plant bugs. It can be found throughout Britain, on various plant species – mine was on the leaf of an Alder tree. The NatureSpot website reports that the eggs hatch in May and the nymphs develop in to adults from June onwards. The tiny bug I found was still a nymph so I guess it will be making its final change fairly soon.

240708 Heterotoma planicornis

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Small and precious

06 Saturday Jul 2024

Posted by sconzani in insects

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British butterflies, butterfly, skipper butterflies, Skippers, Small skipper

Back in the summer of ’22, I blogged about how few Small skippers I had been seeing (Skippers, small but few, 27 June 2022), and how some of the local sites where they’d previously been abundant had been spoiled by human interference. Sadly, the situation has not improved and, this year, the very wet Spring weather seems to have made things worse, so I’m seeing very few Small skippers during my daily nature walks. It saddens me but also makes me appreciate how precious my few sightings are and value them all the more.

240706 small skipper

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Metallic green beetles

03 Wednesday Jul 2024

Posted by sconzani in insects

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British beetles, British insects, Cryptocephalus aureoles, green beetles, metallic green beetles

There are other species of similar metallic green beetles in Britain, but the UK Beetles website says only one (Cryptocephalus hypochaeridis) is likely to cause confusion, so I think I’ve got my identification right here. Meet Cryptocephalus aureoles, a beetle that is reasonably common in much of southern Britain, particularly in sunny, open, dry environments, like woodland and countryside footpath edges, roadsides, embankments and, in my case, the south-facing slope of a coal spoil tip.

240703 Cryptocephalus aureolus (1)

Though the adults can be seen from April through to September, they are particularly active in June and July, when they are often to be found feeding on various species of plants with yellow flowers – hawkweeds (Hieraceum sp.) and cat’s-ears (Hypochaeris sp.) are particular favourites.

240703 Cryptocephalus aureolus (2)

Somewhat surprisingly, their exact life cycle has not been confirmed. The UK Beetles website explains that, after mating,

oviposition occurs from late spring; each egg being coated with faecal matter and secretions and dropped to the ground by the female. Larvae emerge after three or four weeks, depending on the temperature, and develop through the summer, it is not known which stage overwinters but young larvae have been recorded late in the summer and so it is likely to be as larvae which complete their development and pupate in the spring

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Third time’s the charm

02 Tuesday Jul 2024

Posted by sconzani in insects

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Aberbargoed Grasslands, British butterflies, butterfly, fritillaries, Small Pearl-bordered Fritillary

It took three train trips up a Welsh valley and a lot of stomping around cow-pat filled fields to see my first Small pearl-bordered fritillary of the year. On the first two visits, the ‘conservation’ cattle had been in the two fields at Aberbargoed Grasslands National Nature Reserve where I usually find these locally scarce butterflies, which did rather restrict my explorations – the cattle were large, had calves with them, blocked several of the paths across the fields, and there was constant loud bellowing between the herds in the two fields, which wasn’t exactly reassuring as to the safety of the situation. (One of my Twitter followers suggested I just loudly shout ‘Boo’ at them and was certain they’d then move away but every year there are news stories of walkers being trampled by cows so, as an elderly woman walking alone, I was not prepared to risk it.)

240702 small pearl bordered fritillary (1)

Fortunately, during my third visit the cattle were in adjoining fields, which meant I could more easily wander all the pathways. Unfortunately, butterfly numbers were still very low compared to previous years so, although I saw perhaps six Small pearl-bordered fritillaries in total, I was only able to get close enough to photograph one of them. And, as you can see, the photos are not my best. Still, I was pleased to see at least a few of these magical butterflies flitting about the paddocks, and can only hope their numbers will bounce back next year.

240702 small pearl bordered fritillary (2)

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A thistle muncher

29 Saturday Jun 2024

Posted by sconzani in insects

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Agonopterix arenella, British moths, larva on thistle, moth caterpillar, moth caterpillar eating Spear thistle, moth larva

Yesterday, at a local park, as our mini heatwave had passed and the weather was once again overcast, I was doing a little leaf-bothering, as one of my Twitter friends calls it, and noticed that some small mystery creatures had been munching on the leaves of Spear thistle (Cirsium vulgare). I saw similar leaf damage on several plants but it wasn’t easy turning over the leaves to look for the culprits – my skin kept getting punctured by the vicious spines. Eventually, when I turned this leaf over, a little caterpillar poked its head – or possibly its bottom – out of the cosy little hideaway it had spun for itself to check what was happening, and I managed to get some photos. Turns out this is the caterpillar of the moth Agonopterix arenella, and you can see the adult moth it will eventually develop into on the UK Moths website.

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A Ringlet rests

28 Friday Jun 2024

Posted by sconzani in insects

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Tags

British butterflies, butterfly, Ringet

This was not my first Ringlet of the year but it was the first to stay still long enough for me to get a few photographs. It looks restful, reposed but looks can be deceptive. Within moments of me taking this image, it was off once again, patrolling the woodland edge, spreading its pheromones, looking for a female to mate with.

240702 ringlet

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More Red-eyed damsels

26 Wednesday Jun 2024

Posted by sconzani in insects

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British damselflies, damselfly, Erythromma najas, Odonata, Red-eyed damselfly

At the beginning of the year I’d never seen Red-eyed damselflies before. Then I found them along the River Ely in Cardiff in May (Lifer: Red-eyed damselflies, 24 May). And last Friday I had a wonderful time watching them flitting about on Cardiff’s inner city canals.

240626 red-eyed damseflies (1)

According to the NBN Atlas records for Erythromma najas, they were first reported in that location last August. I had been meaning to check the site but hadn’t got around to it before a local birder reported seeing them last Thursday.

240626 red-eyed damseflies (2)

Friday was a dull day (it’s usually easiest to see dragon- and damselflies in warm sunshine) but more pleasant for me walking to the area so I thought I’d take a chance.

240626 red-eyed damseflies (3)

At this time of year, the canals are almost covered by weed and lily pads, where the Red-eyed damselflies might be expected to be seen sitting, but they also like to use waterside vegetation to perch on and that’s where I eventually found them. What gorgeous creatures they are!

240626 red-eyed damseflies (4)

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Large white larvae

25 Tuesday Jun 2024

Posted by sconzani in insects

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Tags

British butterflies, butterfly, Large white butterfly, Large white caterpillars, Large white larvae

If you’re a gardener living in Britain, you’re probably familiar with today’s creatures, the caterpillars of the Large white butterfly (Pieris brassicae), munching on your cauliflowers or broccoli, but I’d never seen them until last week. I think they’re rather attractive but I can certainly understand why the gardeners amongst you might not think so well of them.

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Leafmines: Scolioneura betuleti

24 Monday Jun 2024

Posted by sconzani in insects, leaves, trees

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British leafminers, British sawflies, leaf-mining sawfly larvae, leafminers on Birch, sawfly larvae on Birch

Staring at the leaves of young Birch trees paid off once again when I recently spotted these large blotches.

240624 Scolioneura betuleti (2)

They were made by the larvae of Scolioneura betuleti, a small black sawfly – you can see a photo of the adult on The Sawflies of Britain and Ireland website. The larvae are active in early summer and again in the autumn – the British Leafminers website has images of the distinctive larvae.

240624 Scolioneura betuleti (1)

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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