Still raining

The weather has continued to be very wet, with rain every day of May and an associated slowing-down of sightings. I have managed to sneak out in the less wet spells, however, and made the best of the bad light.

Lady's Mantle tends to sneak up and surprise you. One day it's invisible, and the next the flowers are out. The large folded leaves are ideal for insects such as micromoths to make their larval 'spinnings' for their shelter.

Lady's Mantle

The fronds of Male Fern have only just unfurled and the spore-bearing sori are already in place (although they will remain empty for quite some time, yet).)

Sori of Male Fern

The hedgerow has at least five species of Potentilla (and also the hybrid P. x mixta) in various places along its length. Silverweed is one of the easiest to identify, with its downy silver leaves:

Silverweed

The striking Marsh Cinquefoil is currently in bud, so I'll show pictures of that very soon, weather permitting.

The Orange Tip larva that I showed the other day is now about 4mm long. Note the damage to the seedpod, which the larva has caused by eating it. This is the only foodstuff that the larva will ever eat, moving from one pod to another as it finishes each one off.

Orange Tip larva showing pod damage

Bumblebee workers are busy in the gaps in the rain. They're still very small, so I suspect the rain has limited their pollen-gathering ability to quite an extent.

Bumblebee worker landing on Raspberry flower

Ichneumonids have started to appear in large numbers, which is no great surprise: their target moth and butterfly larvae are fattening up nicely, now.

Ichneumonid on Cow Parsley

Ichneumonid (left) and the hoverfly Syritta pipiens

The second shot also includes a rear view of a male Syritta pipiens hoverfly.

The next shot took me a couple of hours to tie down to species. It's a Lesser Dungfly which keys out to Cordilura rufimana. The Cordilura family is quite large, with some 22 species on the BI list. Most are dung-feeders as larvae, but C. rufimana appears to feed on the rootstock of various plants.

The Lesser Dungfly Cordilura rufimana

Surprisingly similar, but totally unrelated, is the Stilt Fly Neria cibaria. These have a strange habit of lowering their mouth to the upper surface of leaves and then rocking backwards and forwards on those long legs, shaving the upper surface of the leaf, presumably for food.

Neria cibaria - a Stilt Fly

A couple of sawflies next:

The first is on Broad Buckler fern:

Sawfly on Broad Buckler fern

And this is one of the Tenthredo sp.:

Tenthredo sp. Sawfly 

The Hoverfly Cheilosia albitarsis is an associate of Creeping Buttercup. The extremely similar (and only very recently segregated) Cheilosia ranunculi is thought to associate with Bulbous Buttercup.

The hoverfly Cheilosia albitarsis

Two shots of very small (6mm) soldier beetles from the Rhagonycha family: 

First, Rhagonycha limbata: 

Rhagonycha limbata

And secondly, Rhagonycha lignosa, which is associated with Hawthorn flowers during the early part of its season, and can be separated from the species above by the all-dark thorax:

Rhagonycha lignosa

Rhagonycha lignosa is a new species for my list.

A couple of weeks ago, I showed one of the pollen-stealing cuckoo bees. This one looks to be another member of the same family: Nomada flava.

The kleptoparasitic cuckoo bee Nomada flava

Rhagonycha section of this page has been updated to correct the identification of Rhagonycha lignosa.

More critical timings

The larvae of the Orange Tip butterfly eat only the seedpods of their host plants (Cardamine pratensis on my patch), so they need to hatch just after the seedpod has formed. This Orange Tip egg has been laid on the foodplant at exactly the right time, just as the flower is about to open:

Hatching will take place about a week from now, by which time the embryonic seedpod will be formed. (Gestation is around 10 days, but the egg is now orange, which means it was laid 2-3 days ago.)

A few insects are dependent on Buttercups, and the first local flower opened today. The larger insect in the following shot is the hoverfly Cheilosia albitarsis, which feeds as a larva on the rootstock of Creeping Buttercup. The smaller creatures are the micromoth Micropterix calthella:

The larvae of Micropterix calthella are unknown, but given the fact that they appear on the same day as the flowers open (and then stay very close to the same flowers for the next couple of months), then I'm sure there is a very tight relationship between the moth and the plant. This mating couple was photographed on the tendrils of Bush Vetch, so you can get an idea of scale:

Another Micropterix species is the wonderful Micropterix aureatella:

This little beauty is only 6mm. long, but is as beautiful as any other species on the planet. Again, the larval stage is unknown, but it is believed to live on Bilberry which is certainly close by.

It stopped raining

Photo location:

Hedgerow, Leg 2.

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I still haven't seen a female Orange Tip butterfly this year, but they're obviously around: most specimens of Cardamine pratensis have a single egg. I'll try to follow a few of them as the season progresses.


For the last few years, I've annotated this hoverfly as 'Cheilosia sp.' Today I took images from all angles and have now refined my identification to Cheilosia albitarsis. Most of the identification features are microscopic, although it turns out to be 'dependent on Creeping Buttercup in wet meadows'. Big surprise. The small beast is, of course, the micromoth Micropterix calthella.

And this is a pair of the same micromoth. When I find these 'in cop', one is always dark, the other more bronzy. Dunno which is which, though.


The caterpillar of the Garden Tiger moth is one of the most handsome that we have. No points for the plant.


I initially thought this click beetle was damaged, but the close-up reveals that it is cleaning its left antenna.


The fungal rust Triphragmium ulmariae is very obvious on the undersides of Meadowsweet leaves.