The flowers of an ivy bush. They are small flies (about 4 mm) with beautiful orange eyes.
There are some similar species.

     Photo 29-9-2010

       Photo 29-9-2010

The larva feeds on earthworms and larvae of other flies. 
Coenosia tigrina is a robber fly and catch flies. You would not expect that when you see this fly. In greenhouses they can be useful. 

   Photo 12-6-2010

This Coenosia is much smaller than the Coenosia tigrina. (About 3 - 4 mm) These small flies are not to determine from a photo.

    Photo 11-10-2010

This Coenosia is even smaller (about 3 mm), but is remarkable. I had not recognized it as Coenosia. (Thanks Niels-Jan )
A shiny black fly. The legs are black. The side of the thorax is pale.

 Photo 24-8-2011

Again about 3 mm. On the photo, it holds a prey. I had expected it would be spec. 
Explanation Joke van Erkelens (translated): The (dark thickened) Costa of  Coenosia agromyzina runs just a little further or R 4 +5 vein. 
For all other species Coenosia:  The costa runs to vein M1.

Explanation  (ader = vein. Verdikte donkere costa = dark thickened costa)

     Photos 2-10-2011   FPhtos 5-11-2011  

It is a shiny green fly like the Greenbottle. 
It also has black bristle-like hair on the thorax. But in the center are some hairs missing. That 's a difference.
Sometimes the Greenbottle  misses hairs in the center too. But less.

  Watch your head!!!

    Photos 7-3-2010

It was thought, that there were two very similar different species. Now it is assumed that it's the same species.
A beautiful fly. The colour is gray, to reddish brown.

  30-8-2009     21-9-2009   24-9-2011

In 2010 I have made clearer photos with a new camera.
There are three species in the Netherlands with different characteristics. Being such a small fly is that it is difficult to identify.

               Last three photos: May 2010                
If the halteres brown / black: Hebecnema nigra
If the halteres are yellow .....
With hairless eyes: Hebecnema vesper tina With hairy eyes: Hebecnema umbritica
The halteres are yellow. The eyes hairless. So Hebecnema vesper tina.
This information I have from Joke van Erkelens. (Thanks Joke) There were other features. But then it becomes very complicated.

  These two photos: 9-4-2010

  These two photos: 25-9-2010 In autumn!!

Tibia 1 has a posterior seta and tibia 2 has 2-3 posterior seta. 
H. confinis(female) has vague spots on the abdomen and the eyes are not hairy. 
Because I can't see the hairs on the bactibia , H. confinis is not entirely sure.
The differences of  Helina species are very small. Helina pertusa par example maybe would be possible .
Thanks for the information Joke van Erkelens. 

Tibia  means shin.
Seta means bristle
Posterior: Coming after in order; following.

I like the eyes.

Determined again by Joke van Erkelens. Very similar to Helina confinis.

Explanation of Joke van Erkelens:
The combination of crossveins obscured yellow legs + 3 + dorso exchange can only with H.depuncta
(at least from the Dutch species.)
H.impuncta + H. pertusa also have darkened the crossveins + yellow legs ... but both dorso Centrals 4.
According to Joke, there are  more differences in characteristics between the flies, but that's very complicated.

June - October.

See explanation: dorso centrals

Dark spots on the abdomen.

A black, shiny fly.
Native to the United States, Central and South America. In the 20th century, they moved to Europe.
The black dump fly is used as as a biological control agent for house flies. The larvae are predators of many larvae of house flies.
At the farms black dump flies tend to stay in the manure pits. They do not attempt to feed or rest on animals or humans.

Photos 22-6-2010     

   Photos 19-4-2009       Photos 15-5-2010

       Photos 15-5-2010

     Photos 8-8-2009

A small fly. About 4, 5 mm. 
A gray thorax, abdomen orange. Orange legs, but the thigh of the front legs is gray. The first segment of the antenna is orange,
About the lifestyle is not much known.
Central and southern Europe, North Africa.

Photos 20-3-2011

In the Netherlands, a general fly. Near Bergen (NH) it is not often observed. Two years ago I had seen it for the last time in the garden. (in autumn) I have no picture of the front. Therefore, the orange colored part of the face is not visible. The wing bases are coloured orange. The fly is shining black.
The fly you will often see in the sun.
The larvae are found in manure. They feed on other fly larvae.
Of the genus Mesembrina it is the only species in the Netherlands.

Length: 9 - 13 mm.
April - October.
      Photos 16-10-2011

Photo 22-8-2011

Morellia hortorum has three white stripes on the thorax. The thorax of Morellia aenescens and Morellia simplex is dark.

Photo 23-8-2009

Autumn house-fly, but not only in autumn. This fly I photographed in April. In winter you can find them in houses where they will overwinter. In spring they become active again.. 
In summer cattle and horses don't like them, because they feed on manure juices. But thy also feed on plant sugars. 
Two generations.   Larvae in fresh cattle manure.

  female Photo's 28-5-2010

  male Photos: 9-4-2010

Klick here for more information.

Antennea: black and red Legs: black

Klick here for more information.

In the wing of the Muscina prolapsa  the vein M1 has a sharp curve at the end. The vein of the wing of the similar M. pascuorum  not.

Other name: Mydaea scutellaris

An entirely yellow scutellum. The abdomen are a mixture of gray, yellow, brown.
Length: about 9 mm.

Foto 17-10-2010

Neomyia cornicina Genus Neomyia.

An other a shiny green housefly. You can recognize the neomyia on the shiny green top of the head.
In the Netherlands there are the similar species Neomyia cornicina and Neomyia viridescens.

Photos 21-9-2009
 

Photos 24-8-2009

   Photo 28-5-2010

On a kingcup, marsh marigold . 

Photo: 23-4-2010

  Photo 7-3-2010

Phaonia valida looks like Phaonia Erran. Vein R4+5 in the wing runs into an arc at the end and this vein of P.errans is straighter. (The vein, which ends at the top of the wing.)
The vein M1 has at the end a weak arc. In the wing of P. Erran M1 is straighter.

        Photo 3-7-2010

Black gray and white with a blue tint.

April - November.
Length 7.5 - 13 mm

The larvae can be found in the manure.

The larvae live in manure and decaying organic matter.

April - October

Here in the sun on the wall. I see this fly not often, whereas it is clearly recognized by the orange colour. On the thorax near the head it has white stripes. On the head between the eyes is a dark stripe.
He looks a bit like the Phaonia pallida. But that fly is on the head between the eyes orange
Palaearctic

    Photos 18-10-2011