Diptera.info

Posted by Robert Heemskerk on 21-04-2007 22:08

hi flyforum,

This tiny fly remembers me a bit of Sphaeroceridae sp. (it's attitude)
But the legs are not strong and it's got white spots in the wing..
any suggestion?

place: Amsterdam Forest
size: ~3mm

Robert,

Posted by Robert Heemskerk on 21-04-2007 22:23

thanks Kahis!

that fits, it was sitting on some wood on the shore of a lake..

Posted by Tony Irwin on 22-04-2007 20:44

Hi Robert
This is Scatella tenuicosta. The shape of the distal spot in the wing is distinctive.

Posted by Robert Heemskerk on 22-04-2007 21:13

Thank you Tony

I can not find these specie in the dutch specie-list...??

Are you sure it is Scatella tenuicosta?

Perhabs the list is not complete..?

1. Scatella Robineau-Desvoidy, 1830 [geslacht]
2. Scatella lutosa (Haliday, 1833) [soort]
3. Scatella paludum (Meigen, 1830) [soort]
4. Scatella stagnalis (Fall?n, 1813) [soort]
5. Scatella subguttata (Meigen, 1830) [soort]

Posted by Tony Irwin on 26-04-2007 20:24

I am sure it is tenuicosta, and I am sure it has been found in The Netherlands before, even if no-one has recognised it!

Posted by Robert Heemskerk on 09-05-2007 15:22

Hello, me again..

It would be nice if Paul or any other specialist (for the Netherlands) can confirm this?! or deny it!?

It is not Scatella stagnalis?, that one is on the Dutch Specielist.

Robert,

Edited by Robert Heemskerk on 09-05-2007 15:22

Posted by Tony Irwin on 09-05-2007 21:33

Hi Robert
I would be very surprised if tenuicosta does not occur in every country in Europe! This photo is tenuicosta for sure, but I'll be happy to examine any Scatella specimens from the Netherlands, so that Paul has a specimen-based record to add it to the official list. Many entomologists have assumed that any small anonymous Scatella is stagnalis, but often they have confused this species with tenuicosta.

Posted by Kahis on 09-05-2007 22:11

Here in Finland both species occur, but S. tenuicosta is everywhere, S. stagnalis is by no means rare but clearly less common than S. tenuicosta.

Posted by Paul Beuk on 10-05-2007 08:11

#10

Well, maybe tenuicosta does occur in the Netherlands, but if it does, no-one ever bothered to report it under that name.

Posted by crex on 10-05-2007 11:51

#11

Paul Beuk wrote:
Well, maybe tenuicosta does occur in the Netherlands, but if it does, no-one ever bothered to report it under that name.

First record by Robert then ... Whohoo

Posted by Paul Beuk on 10-05-2007 11:57

#12

Well, let Robert collect a few specimens for final confirmation.

Posted by Robert Heemskerk on 10-05-2007 12:51

#13

I will try to find some of these..

It are no escaped Vulture's which are easier to collect

Posted by Paul Beuk on 10-05-2007 13:05

#14

Well, that vulture required several days, so it was not that easy.

Posted by Robert Heemskerk on 14-05-2007 22:00

#15

I collect a Scatella sp. on this place but It looks like a different sp. then Sc. tenuicosta..

I'll show you some pictures of this Scatella sp.

Edited by Robert Heemskerk on 14-05-2007 22:01

Posted by Robert Heemskerk on 14-05-2007 22:01

#16

pic 2

Edited by Robert Heemskerk on 14-05-2007 22:02

Posted by Robert Heemskerk on 14-05-2007 22:02

#17

pic 3

Edited by Robert Heemskerk on 14-05-2007 22:02