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Happy spider’s discovery in Tisvilde Hegn forest

Leticia Bossi
May 24th, 2023


This article is more than 1 year old.

Xysticus lineatus spiders (photo: Frederik Lick Fisher )

Two male Xysticus lineatus spiders – AKA the North European crab spider – were recently discovered in a forest in Tisvilde Hegn in north Zealand.

Specialists are currently looking for females of the same species to firmly establish the presence of a population on Danish soil.

It’s an exciting wait for Frederik Lick Fisher, a graduate biologist from the University of Copenhagen who did his master’s thesis on crab spider sensory physiology, as it could mean he has discovered a species never recorded in Denmark before – a culmination of four years of work.

Spiders unlikely to be invasive
“Given that the species of spider is very rare, we know little about it, but we know that it focuses on a restricted niche so there is not much impact on other species,” Lick Fisher told CPH POST.

Hitherto, no spider species has ever been recognised as invasive in Denmark, and Fisher believes the same will be true of Xysticus lineatus.

In fact, to the contrary, he asserts “it will be high value for the nature field if we can still find rare species here,” as it would further encourage the conservation of biodiversity at national scale.

Not dangerous to humans
No spider species is dangerous to humans in Denmark.

Contrary to what the photos suggest, the female spider of this species measures 7mm and the risk of bites is extremely low.


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Moreover, 21 percent of those surveyed admitted to medicating their kids with paracetamol, such as Panodil, before sending them to school.

The FOLA parents’ organisation is shocked by the findings.

“I think it is absolutely crazy. It simply cannot be that a child goes to school sick and plays with lots of other children. Then we are faced with the fact that they will infect the whole institution,” said FOLA chair Signe Nielsen.

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At Børnehuset there are fears that parents prefer to pack their kids off with a pill without informing teachers.

“We occasionally have children who that they have had a pill for breakfast,” said headteacher Susanne Bødker. “You might think that it is a Panodil more than a vitamin pill, if it is a child who has just been sick, for example.”

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Parents, when confronted, often cite pressure at work as a reason for not being able to stay at home with their children.

Many declare that they simply cannot take another day off, as they are afraid of being fired.

Allan Randrup Thomsen, a professor of virology at KU, has heavily criticised the parents’ actions, describing the current situation as a “vicious circle”.

“It promotes the spread of viruses, and it adds momentum to a cycle where parents are pressured by high levels of sick-leave. If they then choose to send the children to daycare while they are still recovering, they keep the epidemic going in daycares, and this in turn puts a greater burden on the parents.”