Diptera.info

Posted by dguzman58 on 23-09-2011 19:25

I posted an image of this organism before. They are back this year. Here is another image. Can someone ID?

Edited by dguzman58 on 11-11-2011 16:22

Posted by dguzman58 on 23-09-2011 19:26

by the way, not the mosquito larvae. The mosquito larvae provide a size reference.
I have posted more images in the following link, with additional notes...
http://www.flickr.com/photos/entomopixel/6171754483/
here is 1 more image showing ventral prolegs, and lateral view of mouth section. This was taken under a compound microscope.

Edited by dguzman58 on 11-11-2011 16:17

Posted by dguzman58 on 08-11-2011 17:26

A US Dipterist has ID this to Ephydridae.
Another image showing mouth area papillae?

Edited by dguzman58 on 11-11-2011 16:19

Posted by Tony Irwin on 09-11-2011 22:21

Brilliant! - I'm always prepared to believe that wierd-looking larvae are ephydrids, but I'm intrigued to know which genus was suggested. Did the US dipterist say which, or can you put me in touch with him/her, please?

Posted by dguzman58 on 11-11-2011 03:10

The ID was made by Gregory W Courtney
gwcourt@iastate.edu<gwcourt@iastate.edu>;
No ID to genus was given,
We will eventually figure this one out..

Edited by dguzman58 on 11-11-2011 03:11

Posted by Cranefly on 11-11-2011 06:13

It is intersting to know
where (what region) was it collected?
Are there some posterior appendages or some ventral structures except these 2 anal papillae?
the water - very salt or fresh?
is it possible to see lateral view?

Edited by Cranefly on 11-11-2011 06:16

Posted by Cranefly on 11-11-2011 06:26

I looked through the previous images - if it is Nearctic or Hawaiian, or Neotropical
if it is from very salt water
try to check Ephydra gracilis Packard (possibly some young - not mature age)

Edited by Cranefly on 11-11-2011 06:26

Posted by dguzman58 on 11-11-2011 16:06

These were found in Raleigh, NC USA. Fresh but stagnant water. Water had been sitting on a container for several weeks.
There are some type of projections in the mouth region. There are prolegs on ventral side. Appear to have 6 to 7 prolegs. I added some images in above comments.

Edited by dguzman58 on 12-11-2011 13:23

Posted by Cranefly on 12-11-2011 07:15

#10

I looked through Ephydridae literature which I have. The only known species with extracted papillae Ephydra gracilis (=E.cinerea), salt waters. However Ephydra larvae have 3(4) branches of anterior spiracles. We see here at least 6. Some larvae of Parydra and Cirrula have 6 branches, but Parydra has no well developed hooks on ventral creeping welts which I see here. So among known larvae we can think about Cirrula only, but all of them are in salt water and nobody has written about extracted anal papillae in Cirrula. I have read that papillae may be extracted more or less if the salinity of water changes but never observed this myself in Ephydridae.
So, I am sorry, but can not determine this larvae better than it is Ephydridae and subfamily Ephydrinae.

Posted by dguzman58 on 12-11-2011 13:21

#11

The water where I found these was pretty nasty, very bad smell. As you can see however, mosquito larvae were also able to breed in this water. I also saw Chironomid larvae. Thank you so much for your comments. Next year I will collect some samples.

Posted by dguzman58 on 12-11-2011 16:24

#13

Thanks John! These are hard to come by... I do not have a copy. I'll have to take a trip to the Entomology Dept at NCSU.

Posted by Tony Irwin on 13-11-2011 21:39

#14

The Brachydeutera adult in the other thread looks very freshly emerged, so I'm inclined to this this may be its larva - but it's not quite like any Brachydeutera larvae I've seen figured. Well worth preserving some adults and larvae (and puparia if you can find them).

Edited by Tony Irwin on 13-11-2011 21:40

Posted by rafael_carbonell on 13-03-2020 14:58

#16

Hi, I found this larvae very similar to these in a water container in Badalona (near Barcelona, Spain, autumn 2019): https://www.dropb...a.mp4?dl=0
Does anybody have the clue to what it was ?

Edited by rafael_carbonell on 13-03-2020 15:00

Posted by Tony Irwin on 13-03-2020 16:46

#17

If you see them again this summer, could you collect some and try to rear them? And keep a couple in ethanol - it should be possible to extract DNA and identify them that way.