The most interesting insect on the peninsula is the Great Green Bush Cricket. Here
it is very close to the northern limit of its range but it is quite common. The loud
buzzing sound of its stridulations can be heard in the late afternoon wherever there
are scruffy bits of hedgerow and bracken. On a suitable warm afternoon in August
or September you can hear a singing male about every 50 metres along the road west
of Marloes on the way to Martin’s Haven. Despite being huge - the size of a pea pod
- they are very hard to see and are almost always further away then you imagine.
The females are even more impressive with a large scythe-shaped ovipositor.
The grassy clifftops can be very good for butterflies. Common Blues can indeed be
very common, with Small Coppers in accompaniment. The Coast Path and especially the
dry stone walls can be good place for Wall Browns and Graylings - there is good spot
for all these butterflies to the east of St Brides beach where there is a grassy
cliff top then a beautiful flower-covered wall next to the path. In good years there
will be Painted Ladies and Clouded Yellows here too. The Deer Park in July can be
a very good spot for Dark Green Fritillaries.
As there are many pools and streams on the peninsula there is a good selection of
dragonflies. (The author has recorded 14 species in the garden!) Hairy Dragonflies
can be seen early in the year then the first Beautiful Demoiselles appear on suitable
streams. Ponds can be covered in ovipositing Azure Damselflies which here seem to
be more common then Common Blue Damselflies.Golden Ringed and Emperor dragonflies
patrol the ponds whilst Four-spotted Chasers and Broad-bodied Chasers compete for
perching rights. Settled quietly in the rushy stems there will be a few Emerald Damselflies.
Later in the year Migrant Hawkers are usually the most common hawker.
Photos by Peter and RosemaryRoyle
For information about moth sightings in Pembrokeshire have look at the Moths blog