Tomorrow I have a moth event at Blashford, we will be opening two moth traps and looking through at the catch, identifying and photographing them. Over the last few days we have caught three Clifden nonpareil moths, also known as the blue underwing, this is a spectacular species and probably the UK moth with the largest wing area. In fact there was one yesterday and another today, obviously it would be great if there was one tomorrow, but things being what they are I suspect there won’t be! It is also still quite rare nationally, having only recently recolonized the UK, luckily for us the New Forest area is probably their stronghold.
The caterpillars feed on aspen and probably other poplar species, as it happens we have a number of aspen at Blashford Lakes, which is probably why they seem to be established on the reserve. Aspen is an interesting tree as is has quiet a lot of insect species associated with it. It is a tree that can grow very tall, but also produces lots of suckers, so there can be niches for species that prefer the canopy and shrub layer provided for by a single tree. It is very prone to being browsed and the suckers are often eaten off, increasing numbers of deer are probably one reason that aspen is in decline in many areas.
We may not see a Clifden nonpareil, but I hope we will see a good few moths and one thing that I am fairly sure about is that a number of them will be yellow or orange, autumn is the season for yellow moths, probably because it is the time for yellow leaves.
Although autumn is well underway now there at still quite a lot of insects about when the sun comes out, southern hawker, migrant hawker and common darter dragonflies are still around in fair numbers and butterflies include red admiral, comma and a lot of speckled wood. As I was eating lunch yesterday I noticed a fly on the picnic table next to me and realised it was one of the snail-killing flies.
It is the larvae that kill the snails, in the case of this species , aquatic snails, which is probably why it was close to the Education Centre pond.