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It is a tradition of the Telfer family to hold a biennial gathering in the Brecon Beacons. The naturalist in me wishes that this family tradition had come to be based in a hotspot for wildlife like Purbeck or the New Forest. But the pan-species lister in me knows that I can find species I’ve never seen before wherever I go. Last time I tackled the whitebeams of the Brecon Beacons. This time I got in touch with Chris Owen to see if it might be possible to meet up and look for two of his local specialities: the Ghost Slug Selenochlamys ysbryda and the harvestman Sabacon viscayanum. Chris gave it the thumbs up and I’m so glad he did because the three hours we had in the field on Sunday 28th September will be long remembered.
Jo, Bradley and I pulled in to the car park in Bargoed to meet Chris for the first time. Dave Gibbs was there too which was a nice surprise and made it a proper pan-species listers’ gathering. In emails, Chris had mentioned a few other highly desirable species that he might be able to show us and after dropping down the valley into a jungle of Japanese Knotweed we were soon seeing one of them, the flat-back millipede Propolydesmus testaceus, in good numbers. Ghost Slug took a bit more work, turning logs and stones and rummaging in leaf-litter but Dave eventually found a tiny one, before Chris located a couple of adults. They are uncannily like shelled slugs but from an unrelated family, with an extremely reduced shell and with a bizarre narrow foot like a monorail train. Bradley got this one on his “Poked it!” list.
Chris is very good on his slugs and also showed us presumed individuals of Arion distinctus, hortensis and oweni which gave Dave and I some dissection work for later. But with no sign of Sabacon, Chris decided to take us on to a nearby woodland where he was more confident of finding it. We just rolled a couple of logs and there it was! It’s one of the more unusual harvestmen and one with a restricted range.
Deeper into the wood, we searched in beech leaf-litter for the Lemon Slug Malacolimax tenellus and the centipede Lithobius tricuspis. We saw both species in some numbers. Dave and I were reeling with all these new species in such a short space of time, and all the while Chris kept mentioning other highly desirable species we might find: the three-pronged bristletail Dilta chateri, the slugs Arion cf. iratii and Arion cf. fagophilus (both recent additions to the British list) and the nemertine worm Argonemertes dendyi. My limited time was running out but I already knew that Chris’s patch was worth a much longer visit and that I’d be back to do it justice.
Driving home, I reckoned Chris had shown me 7 or 8 ticks, and I was well pleased with that. I had a few specimens to confirm or identify but no inkling at this stage that my tubes contained two species new to Britain! Read on in part 2.
With much less of my time available for natural history since 24th December, I’m making the best of it by staying local and broadening my taxonomic horizons. In fact, today I have spent the whole day studying the wildlife of our back garden and didn’t even make it down to the far end until just before dark! But I have literally left no stone unturned. I have been spurred into action by Andy Musgrove’s “1000 1ksq challenge“: the challenge being to find 1000 species in your chosen 1km square during 2013. It’s a pan-species challenge: invertebrates, vertebrates, plants, fungi, the lot.
I’ve been seriously impressed at how many species people have already racked up for their squares, with Seth Gibson topping the table at the end of January with a mighty 248 species. I’ve also been seriously impressed at the way so many of the participants are taking a truly pan-species approach and boldly tackling Britain’s biodiversity in its entirety. So, the 1000 1ksq challenge has aroused my competitive spirit, and shamed me into trying to identify things that I normally ignore (like lichens, mosses, earthworms, springtails, etc.). Here are today’s results.
First a few photos, then my species lists for today.
Just the ‘famous five’: Armadillidium vulgare, Oniscus asellus, Porcellio scaber, Philoscia muscorum and Trichoniscus pusillus/ provisorius.
Geophilus insculptus – a tick! Common and widespread species.
Microplana terrestris – identified by comparing to Brian Eversham’s photos on flickr. Pretty sure Brian has shown me this species in the past but it wasn’t on my list, so a tick!
Earthworms: identified using the iSpot keys. A completely new group for me and I was amazed at how many species occur in the garden. I identified three but saw at least two others which defied confident identification.
Lumbricus castaneus Chestnut Worm
Lumbricus rubellus Redhead Worm
Eisenia fetida Brandling Worm. A banded worm, common in our compost bin, and curiously malodorous when handled.
Slugs: the MolluscIreland site is very useful for slug identification, with Roy Anderson’s expert ID tips and his photos.
Deroceras invadens (was panormitanum) – thanks to Christian Owen for bringing me up to date!
Arion hortensis/distinctus – still not sure about these.
Arion rufus – with a bright orange foot fringe. Exhibiting a rocking response, which should be less strong than Arion ater though I’m in no position to judge that.
Leistus spinibarbis (Carabidae)
Notiophilus biguttatus (Carabidae)
Tachyporus hypnorum (Staphylinidae)
Lobrathium multipunctum (Staphylinidae)
Xantholinus linearis (Staphylinidae)
probably Tomocerus minor (thanks to Dr Peter Shaw)
Bryum capillare – leaves became “corkscrew-like” when dry.
Brings me up to a mere 117 species for my square.