Springtails and rust

21 Friday Apr 2023

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British springtails, Dog's mercury, Melampsora populnea, Merculiaris perennis, rust fungus, rust on Dog's mercury, springtail, springtail feeding on rust fungus

We’ve seen springtails and slime a couple of times previously on this blog; now here’s the next instalment in the springtails series: springtails and rust fungi. I spotted this rust, Melampsora populnea, on Dog’s mercury (Merculiaris perennis) during yesterday’s walk. From the top of the leaf, all you see is a small area of puckering and some pale spots (near the hole on the leaf in the lower part of the first photograph below). But, on the underside of the leaf, it’s a different story, with the orange blobs typical of a rust fungus.

230421 dogs mercury and rust

At the time, I didn’t notice the tiny creatures munching on the fungus, neither the minuscule orange ones nor the relatively large pale orange ones. I presume the smaller ones are the offspring of the larger, which are definitely springtails, though I don’t know which species of Collembola these are, and my photos aren’t precise enough to identify them more precisely.

230421 rust and springtails

Springtail and slime

17 Friday Feb 2023

Posted by sconzani in fungi, insects, leaves

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British springtails, Dicyrtomina ornata, insects on Sycamore, leaf litter, slime, slime mould, slime on Sycamore leaf, springtail, Sycamore leaves

My most recent leaf-diving session in my favourite slimy Sycamore leaf spot turned up these two tiny treasures. This first is a miniscule springtail with a very hairy bottom which I think is Dicyrtomina ornata. There is another very similar springtail, Dicyrtomina saundersi, but that has distinct orange patches on its antennae and I’m not seeing that in my photos of this little critter.

230217 springtail

The second treasure was a lovely bit of slime, which may or may not be Metatrichia floriformis. Slime moulds can be tricky to identify accurately and I’m well out of practice.

230217 slime

On the fence

14 Wednesday Dec 2022

Posted by sconzani in insects

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British springtails, harlequin ladybird, hoverfly larvae, ladybirds, springtail, Syrphus sp larvae, Syrphus species

Last week, before our current cold snap (though we’ve had no snow, it was -8C in the bitter easterly wind today), I was amazed at how many insects I found on and around a black metal fence that borders a local park.

221214 fence

I was initially checking for hoverfly larvae, as I was alerted a couple of years back to the fact that they can often be found on fences and other objects under trees like Sycamore – I think they fall when the leaves fall, then stay on the fence rails gobbling up any aphids that also fall. The four hoverfly larvae I found (shown below the lovely blue-bodied fly) are all from the Syrphus genus (but it’s not possible to identify them to species level), but I was surprised to also find an abundance of Springtails and more than 20 ladybirds, almost all Harlequin. I don’t know why the fence attracted them all – it felt cold to the touch but perhaps the black paint meant the surface was warm when the sun did actually shine.

221214 insects on the fence

A spring in its tail?

17 Thursday Feb 2022

Posted by sconzani in insects

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British insects, British springtails, insects under logs, Neanura muscorum, springtail

I’ve been log-diving again, checking under small rotting branches and logs to see what might be seen. Woodlice and slugs, small spiders and snails there were a’plenty but the only creature I found with even a modicum of colour was this little springtail. I think this is Neanura muscorum, an insect which couldn’t be less true to its name if it tried – no tail to be seen and certainly not very springy.

220217 Neanura muscorum

Sitting on the fence

06 Sunday Jan 2019

Posted by sconzani in 365DaysWildin2019, nature

≈ 3 Comments

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British hexapods, British springtails, Collembola, Dicyrtoma fusca, Dicyrtomina saundersi, Entomobrya multifasciata, Hexapod, Pogonognathellus flavescens, springtail

No, it wasn’t me sitting on the lichen on the fence posts. If you have keen eyes, you may have been able to spot a tiny creature in that last image I posted. It was a Springtail – not an insect, but a hexapod and, with around 250 species found in Britain, Springtails form the largest group of hexapods, the Collembola.

190106 unidentified springtails (1)

These creatures are tiny – no more than 6mm long, but extremely abundant. They mostly eat rotting leaves and bacteria so, as well as being found amongst the lichen on fence posts, they can also be discovered, in their millions, in the soil, in compost heaps, in fact anywhere there’s rotting vegetation. According to the Naturespot website, it’s estimated there can be as many as 100,000 Springtails in each cubic metre of top soil. (Some species also eat live plants and so are considered pests by farmers and gardeners.)

Pogonognathellus flavescens

Springtails are so named because they have a tail-like appendage (the furcula) under their abdomen. This ‘tail’ is held in place with a latch, which, when they think they’re in danger, they can simply release to catapult themselves into the air and escape.

Dicyrtoma fusca

The Collembola are of two types, the round-ish ones (globular) and long-ish ones (linear), and, as you can see from my photos here, I’ve managed to find some examples of both types.