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Tag Archives: sputnik-shaped egg sac

188/366 Arachnophilia

06 Monday Jul 2020

Posted by sconzani in nature, spiders

≈ Comments Off on 188/366 Arachnophilia

Tags

British spiders, Misumena vatia, Nursery web spider, Paidiscura pallens, Pisaura mirabilis, sputnik-shaped egg sac, White crab spider

I’m not a huge spider fan but, as I’ve been spying a few during recent meanders, I thought I should show them a little love, so …

200706 1 crab spider

White crab spiders (Misumena vatia) like this one are usually very good at camouflaging themselves, lurking on white or pale-coloured flowers, but this little one was being bold, and so made for a good subject for a photo.

200706 2 spider and eggs

A spot of leaf-turning revealed several Paidiscura pallens spiders and their weirdly shaped egg sacs. You can read more about these tiny creatures in my previous blog The sputnik spider, July 2017.

200706 3 spider and eggs

One of the meadows where I walk has a lot of long grass, some of which is now woven together by the silken threads of Nursery web spiders (Pisaura mirabilis). These spiders don’t spin webs to catch food; instead, their webs are constructed to keep their spiderlings safe while they grow in to adults.

200706 4 spider and eggs
200706 5 spider and eggs

The adult spiders are a pale brown in colour, with a pattern of darker brown and black stripes running vertically along their bodies.

200706 6 spider and eggs

The Wildlife Trust website has this fascinating information about Nursery web spiders:
‘Mating is a dangerous game for male Nursery web spiders, so they present a gift of food to the female while laying perfectly still and pretending to be dead. When the female investigates the food, the male will suddenly jump up and mate with her.’

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The sputnik spider

06 Thursday Jul 2017

Posted by sconzani in insects, nature

≈ 5 Comments

Tags

British arachnids, British spiders, egg sac, oddly-shaped egg sac, Paidiscura pallens, spider egg sac, spiders, sputnik-shaped egg sac

The weirdest thing I found when I was out square-bashing last week was this sputnik-shaped thing, stuck to the underside of an oak leaf. It was incredibly tiny, about 2mm across, and I had no idea what it might be.

170706 Paidiscura pallens egg sac (3)

Luckily, I belong to some really excellent wildlife groups on Facebook and, when I posted a photo on the Insects of Britain and Northern Europe page, I got an answer almost immediately. This is the egg sac of the spider Paidiscura pallens. At just 1.5mm, the spider is even smaller than its egg sac and, because of its tiny size, is rarely even noticed.

170706 Paidiscura pallens (1)

So, the next time I was out for a wander I decided to check the undersides of more leaves – they prefer stiff leaves, like oak, sycamore and holly – to see if I could find any others. And bingo, I quite quickly spotted three more egg sacs and their creators, sitting not far away on the leaves. So, next time you’re out for a walk, take a look under some leaves. You never know what you might find.

170706 Paidiscura pallens (2)

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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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