Sunday, 10 July 2011

Kilpatrick Hills, West Dunbartonshire

The route I followed on today's (short) walk was: Duntocher to the Test (OS map grid reference: NS 475 743) via Little Round Top Wood (NS 476 735), this time crossing the marshland meadow above it.

Bittersweet Solanum dulcamara
Bittersweet (Solanum dulcamara)

Bittersweet (also known as Woody Nightshade) was growing through a hedge at the side of Beeches Road (field boundary near crossroads).

Bittersweet is a close relative of Potato, Tomato and Aubergine (all these plants belong to the genus Solanum and all have poisonous foliage). Unlike its partially edible relations: all parts of Bittersweet (including the attractive fruits) contain the glycoalkaloid poison solanine and cause nausea and stomach cramps if consumed.

I found 3 Six-spot Burnet moths in the rough grassland above Little Round Top Wood, they all looked a bit worn (probably the end of their flight period).
These day-flying moths produce cyanogenic glucosides and can also sequester those produced by their foodplant (Common Bird's-foot Trefoil). When broken down, the cyanogenic glucosides release poisonous hydrogen cyanide: their crimson-spotted wings are an aposematic warning to predators.

Six-spot Burnet Zygaena filipendulae
Six-spot Burnet (Zygaena filipendulae)

Hairy Thyme Thymus praecox
Hairy Thyme (Thymus praecox)

Surprisingly few bees around at the moment - I've scarcely seen any this summer, even the dense clumps of thyme were empty.

At the Test I found a Sparrowhawk kill: a clump of feathers which probably belonged to a Meadow Pipit.

I also found this large female Drinker moth:

Drinker moth Euthrix potatoria female
Drinker moth (Euthrix potatoria) female

Drinker moth Euthrix potatoria female
Drinker moth (Euthrix potatoria) female

Drinker moth Euthrix potatoria female laying eggs
Drinker moth (Euthrix potatoria) female, laying eggs

Drinker moth Euthrix potatoria female laying eggs
Drinker moth (Euthrix potatoria) female, laying eggs

Difficult to photograph due to the blustery wind!
The irritatingly hairy caterpillars of this moth feed on wild grasses and reeds: these eggs will hatch in a month's time and the larvae will spend the winter in their larval stage (pupating the following summer).

In the sheep-grazed grassland south of the Test, I found the diminutive white flowers of Fairy Flax (Linum catharticum): a non-edible, wild relative of Flax (the plant from which linseed is obtained).

Fairy Flax Linum catharticum
Fairy Flax (Linum catharticum)

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