Twenty years ago you would be lucky to see this attractive metallic green and purple-striped beetle outside a greenhouse. The Rosemary Beetle Chrysolina americana was first discovered living outdoors in Surrey in 1994. Since then it has become widespread throughout southern England. They are commonly found on aromatic herbs, mainly rosemary but also on lavender, sage and thyme.
This one was found on rosemary whilst I was attending a course on bumblebees in Winchester, Hampshire.
Detail of Lego Dodo
On Saturday I attended another insect identification course, this time on Solitary Bees and Wasps. These informative courses are run the Hampshire Arts and Museum Service at Chilcomb House. One of the real treats for me is that the keeper, Christine, allows us a lunchtime peak at the natural science collections. This time she let me handle a femur (thigh bone) from a Dodo Raphus Cucullatus a flightless bird which although only ‘discovered’ in 1598 was extinct by 1662, just over 60 years later. This particular bone was probably recovered from the the Mare aux Songes swamp in Mauritius around 1860. I must say I did feel rather melancholy holding it in my hand.
Sadly many more beautiful creatures continue to join it or find themselves on the ever expanding critically endangered list. Despite the losses we really haven’t learnt much as a species.
Colias croceus – Male
The Clouded Yellow Colias croceus isn’t a butterfly most of us get to see every year. It’s a summer migrant from southern Europe. If you live near the coast in Devon or Dorset and you’re the type of person that looks then you might get to see one or two each year. But further north you can go for years without seeing one at all. In nine out of ten years it is scarce. Then for reasons that we don’t fully understand we get an invasion. A glorious ‘Clouded Yellow year’ where numbers can be exceptional and individuals can be seen throughout the country and if we are truly blessed as far as southern Scotland.
Sadly the year after, again for reasons we don’t fully understand, numbers can be extremely poor.
So having spotted a dozen or so on Saturday afternoon at Martin Down NNR in Hampshire, I did the only sensible thing and went back again on Sunday morning. Well, that and the fact that my photos from Saturday were truly shocking. In my defence they’re tricky to photograph in as much as when they land they immediately fold their wings, plus they are all too easily spooked.
As you can see the underside is attractive enough but you really need to get out there and see them flying to see the upperside which is rather stunning – something not lost on the Victorian collectors. Both upper wings are a warm sulphur yellow with black margins. The upper with a single black eye-spot, the lower with a double dark orange, yellow-edged eye-spot. For a change the female has the edge in colouration in that the black margin is sprinkled with bright yellow dots. These are absent in the male. The French have a good name for this butterfly ‘Le Souci’ (The Marigold) which is very descriptive of the upper wing colour.
I saw plenty of Clouded Yellows in Cyprus earlier in the year so it was great to see them here in good old blighty.