Rare species discovered at ‘lost world’ estate near Loch Ness

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23rd February 2017, by Richard Bunting. Pictured: Pseudoscorpion or knotty shining claw (Lamprochernes nodosus) at Dundreggan

Surveys at Trees for Life’s Dundreggan Conservation Estate near Loch Ness have revealed a range of rare species, including a midge never recorded in the United Kingdom before – underlining the site’s growing reputation as a ‘lost world’ for biodiversity.

Parasitic wasp, Diphyus salicatorius

The discovery of the non-biting midge (Chironomus vallenduuki) by entomologist Peter Chandler last August brings the total of UK biodiversity firsts found at the estate in Glenmoriston in Inverness-shire to 11.

Other key findings during the charity’s 2016 survey season included two rare gnats whose larvae feed on fungi. One of these (Sciophila varia) is only known from four other UK sites. The other (Mycomya nigricornis) is only known in the UK from a handful of Scottish sites and had not been seen since 1990. 

“Dundreggan is a special part of the Caledonian Forest that keeps on revealing beautiful, interesting and rare species. The surprisingly rich wealth of life in this corner of the Highlands highlights the importance of concerted conservation action to protect and restore Scotland’s wild places,” said Alan Watson Featherstone, Trees for Life’s founder.

The charity also found two parasitic wasps (Homotropus pallipes and Diphyus salicatorius), for which there are very few Scottish records, and – for the first time in Scotland north of the River Tay – a pseudoscorpion called the knotty shining claw (Lamprochernes nodosus).

A micro-moth, the small barred longhorn (Adela croesella) – only documented at three other locations in Scotland, and never before this far north – was found by volunteer Richard Davidson. Richard had been taking part in one of Trees for Life’s popular volunteer Conservation Weeks at Dundreggan when he found the moth.

In total, more than 3,300 species have now been recorded at the forest restoration site. At least 68 of these are priority species for conservation.

“Our latest discoveries add to an already-remarkable range of rare and endangered species found at Dundreggan – some of which were previously unknown in the UK or Scotland, or which were feared to be extinct,” added Alan Watson Featherstone.

Peter Chandler sweep-netting for
fungus gnats at Dundreggan

New species for the UK discovered on the estate in recent years were three sawflies (Nematus pravus, Nematus pseudodispar and Amauronematus tristis), an aphid (Cinara smolandiae), two aphid parasitoids (Ephedrus helleni, Praon cavariellae), three fungus gnats (Brevicornu parafennicum, Mycomya disa, Sceptonia longisetosa), and a mite (Ceratozetella thienemanni).

Dundreggan has also revealed the second-ever British record of a waxfly species (Helicoconis hirtinervis); a golden horsefly (Atylotus fulvus) only seen once before in Scotland since 1923; and the juniper shieldbug (Cyphostethus tristriatus), thought to be the first Highlands record.

In total, more than 3,300 species have now been recorded at the forest restoration site. At least 68 of these are priority species for conservation.

Below are images of another non-biting midge, a Chironomid midge. Not the midge discovered at Dundreggan but extremely similar to the now famous non-biting midge (Chironomus vallenduuki).

A non-biting Chironomid midge

Non-biting midge (Chironomidae) on dwarf birch leaf

Male Chironomid midge

 

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