Showing posts with label Melangyna. Show all posts
Showing posts with label Melangyna. Show all posts

Sunday, 11 April 2010

Hot Spot

I went to a spot that's usually very good at this time of year (south-west facing vertical banking below a hawthorn hedge) . It proved to be a good choice.

As soon as I saw this little (12mm) hoverfly, I knew she was new to me. She appears to be a female Melangyna, and a couple of microscopic features suggest Melangyna lasiopthalma. Since this would be a first Irish record, I need to go back and get some more solid evidence.


This Small Tortoiseshell was basking and feeding on the Lesser Celandines. It seems in pretty good condition, considering it has overwintered in those freezing conditions:


Common Fumitory - Fumaria officinalis - adds a splash of pink to the predominantly yellow verge:


A couple of weeks ago, I mentioned the tight threads that pull the Coltsfoot head into a downward-facing position. Here's a shot that shows the process:

Primroses were visible in a more sheltered part of the bank:


The queen bumblebees are getting very heavy already, and this B. cryptarum was clumsily crashing from flower to flower. Some appeared unable to fly at all and simply crawled from one flower to the next. I presume her nest is within walking distance!

The fungal rusts don't waste any time. The leaves are quite fresh and already the yellow spots of Uromyces dactylidis are clearly visible on Celandine leaves:


Yet another new member of the Orthosia family, the Clouded Drab - Orthosia incerta - came to light last night. Guess which pollen it eats....


Wednesday, 5 August 2009

Bad light

Even when it isn't raining at the moment, any light that we do get is horrible, but we do what we can.

The Angelica is currently covered with insects of all kinds. Most are nectaring, but a few of them use the nectaring insects as a source of their own food in a similar way that crocodiles and lions use watering-holes as prime feeding ground.


The above shot shows:

A) Ichneumonids
B) Tenthredo sp. Sawfly
C) Ectemnius Wasp
D) Tree Wasp

This nectaring Ichneumonid poses a bit of a problem. I've seen this upward-curved ovipositor a few times, but I can't really work out the purpose of that curve. Maybe it reverses into a hole and lays its egg backwards?


Sometimes you see something and you intuitively know it's new. This Leafhopper was a bit larger than the usual ones and slightly more rounded. A quick check through the references reveals that it's Aphrophora alni, and is new to me.


Similarly, this hoverfly shouted "I'm new, too", and I managed to get a few shots before it flew off. It's certainly a Melangyna sp., but that's as close as we can get without capturing it.


These are scarce at the best of times: the larvae are specialist eaters of specific aphids.