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Showing posts with label Carabid. Show all posts
Showing posts with label Carabid. Show all posts

NORWICH: Catton Park ground beetle

14th September 2017

After work I headed to Catton Park. There had been strong winds for the past few days, and I was interested to see if many branches had come down, possibly bringing species usually above head height down to the ground. Before entering the park I checked out the road verge nearby, where I confirmed some naturalised Soapwort that I had tentatively identified from the car a few weeks ago.

Going along an area of woodland edge I noticed some black fungal spots on Elm leaves, which Tony Leech kindly identified as Dothidiella ulmi, which has five previous Norfolk records. I then cut across the grassland and found a ground beetle buried head down in a Knapweed head. It turned out it was just feeding on the seeds, and was quite speedy when disturbed. It turned out that it was Curtonotus aulicus, and this behaviour is quite typical. A range of common Oak galls completed the evenings recording.




NORTH NORFOLK: Bank holiday part 2 - Weybourne

Adam & I had arranged our day out in advance, and had hoped that the last week of August might yield a few migrant birds, but the wind direction had largely out paid to this. Instead we decided to head to the coast but concentrate on bees instead.

Our morning destination was Weybourne Cliffs, where I had heard that there was a colony of Heather Bees (Colletes succinctus) over a thousand strong. My previous experience of this species was of a few skittish bees flying about the heather, so this would be a good chance to observe them closer up. In addition, they were likely to be attended by the cleptoparasitic Red-thighed Epeolus (Epeolus cruciger), a species I'd not seen before (I saw the closely related Black-thighed Epeolus at the start of the month at Titchwell).

Starting off on the top of the cliff, we found some Lasioglossum sp and a few Heather Bees nesting in some sandy outcrops. It soon became evident that the main colony was in an area of sandy cliff, about two-thirds of the way up. The best way to view was evidently from the beach, so we went back down and round. Most of the bees were above head height, but enough came down lower for us to get some good views.



We were successful finding the Red-thighed Epeolus too. As well as finding several males and females, there was a dead one, which allowed for close examination. Given that many bees require close (often microscopic) examination, it was useful to get close up views to compare against the other species in the genus. Adam also located a large beetle, which as I hoped turned out to be one of the coastal specialists, Broschus cephalotes.




After spending a while at the colony, we moves across to the western cliffs. These seemed to have nothing nesting in them, so we moved on to scanning Weybourne Camp. I remarked that there should at least be a Wheatear about, at which point Adam found one. That was it for migrants though, so we headed back to the car and onwards.