Rare dragonfly in southern Netherlands

This video from the USA says about itself:

Finding Uncommon Dragonfly Species

Mud Lake is a subalpine fen near Skalkaho Pass, Montana. Fens are infrequent, as such the community of species using this habitat are
uncommon to rare. I have visited this site several times looking for two particular dragonfly species found here: Lake Darner (Aeshna
eremita) and Subarctic Darner (Aeshna subarctica) [aka Bog Hawker]. This video captures the adventure and my happiness in finally finding and photographing them on September 9, 2013.

Translated from the Vlinderstichting in the Netherlands:

Monday, October 5th, 2015

In 2013 there already was a sighting of a bog hawker in the Kampina nature reserve in North Brabant province and this year they are seen again. That seems like this rare dragonfly is establishing itself there. They are otherwise only found in the northern half of the Netherlands.

California sister butterfly at feeder, video

This video from the USA says about itself:

California Sister Butterfly visits the Feeder, September 29, 2015

The upper surfaces of the wings of Adelpha californica is a dark brown to black. It has two large orange patches near the tip of the forewings and wide postdiscal creamy white bands on both wings. The ventral surfaces of the wings are generally similar but with blue bands along the edges of both wings, as well as blue and orange patterns on the corners near the body. Like other members of the genus, the butterfly is named “sister” for its black and white markings on the forewing that resemble a nun’s habit.

Spider removes dewdrops, video

This video shows a male Metellina segmentata spider, which has become wet because of dewdrops.

These dewdrops cause much extra weight and may hinder breathing.

So, the spider removes the drops from his legs, letting them slide down reed stems.

Marijke Scheffer from the Netherlands made the video.

Dung beetle pushing its burden, video

In this video, a Geotrupes stercorarius dung beetle pushes its dung ball.

Mark Scheper from the Netherlands made the video.

New butterfly species arrives in the Netherlands

Southern small white

Translated from the Dutch Vlinderstichting entomologists:

Monday, September 28th, 2015

The experts already expected it, and on Sunday, September 27th, 2015 was the day: the first southern small white butterfly was observed at the Fort Sint Pieter in Maastricht by Pieter Vantieghem. A new butterfly species for the Netherlands.

Rare water insects in Dutch river

Aphelocheirus aestivalis, photo: Marianne Müller

Translated from Dutch conservationist ARK:

Sunday, September 27th, 2015

In the Geul river at Wijlre Aphelocheirus aestivalis river bugs have been found. The rare aquatic insects live on the gravel bottom of the Geul. In Wijlre, municipality Gulpen-Wittem, ARK Nature works with various parties together to improve the natural environment in and along the river.

Good porcelain crab news

This is a long-clawed porcelain crab video.

Translated from the Dutch marine biologists of Stichting ANEMOON:

Autumn is just beginning, but we can already now for many species take stock of the observations in 2015. For the salt water and in particular the Zeeland delta, for both porcelain crab species, results are clear. In the central and western Oosterschelde the broad-clawed porcelain crab has been an increasingly observed species. This year, the long-clawed porcelain crab joined in. The attractive, but unfortunately small crabs are being encountered in this area more often and in increasing numbers.