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View Thread :: Identification queries :: Diptera (eggs, larvae, pupae)
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Larvae for ID
#1 Print Post
Posted on 02-09-2008 20:30

Location: Israel
Posts: 172
Joined: 01.09.08

Habitat is locally shallow salty puddles from drainage thermomineral water from local spa.
Due the high evaporation the salts concentration is high
The water r rich with algae and small microorganisms
Amir attached the following image:

My insects album
Assorted flies from china
#2 Print Post
Posted on 02-09-2008 20:32

Location: Israel
Posts: 172
Joined: 01.09.08

2th photo
Amir attached the following image:

My insects album
Assorted flies from china
Paul Beuk
#3 Print Post
Posted on 02-09-2008 20:53
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Super Administrator

Location: Netherlands
Posts: 17954
Joined: 11.05.04

I'd say Ephydridae but I'll wait for Tony to confirm.

- - - -

Paul Beuk on
#4 Print Post
Posted on 18-09-2008 11:14

Location: Moscow, Russia
Posts: 577
Joined: 17.09.08

If the size of the larvae is about 10-11 mm and they have well developed pseudopodia with hooks then it may be some species of Ephydra, most probably Ephydra flavipes ? the picture of black dorsal spinules on the second photo, left larva, is typical for this species. If the larvae are larger then it may be Halmopota mediterranea.
#5 Print Post
Posted on 18-09-2008 12:28

Posts: 21
Joined: 31.07.08

May be a silly question.. But isn't the simplest way to identify larvae, to catch a few and keep them alive long enough for them to become adults?
Paul Beuk
#6 Print Post
Posted on 18-09-2008 13:18
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Location: Netherlands
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Strictly speaking, yes. But one does not always have the means to collect the larvae and bring them to a place where you can rear them. Neither do all larvae act kindly to the attempts to rear them, as they can be very picky to the conditions they are kept it (too moist, too dry, airing, etc.) or don't like the food you may supply (if you can find it). And then again, some may need a diapause of some kind of which we know too little to get them though it alive.

- - - -

Paul Beuk on
Tony Irwin
#7 Print Post
Posted on 18-09-2008 21:16
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Location: Norwich, England
Posts: 6220
Joined: 19.11.04

Oddly enough, I'm rearing Ephydra at the moment with little problem - but I agree with Paul - it's not always easy - maggots can be very temperamental! Often, the difficulty is keeping them cool enough in captivity, but in this case that shouldn't be a problem!
As for the identification, they do look like Ephydra, but there are other similar species. Halmopota tends to have all the prolegs the same, and Ephydra and Setacera tend to have the last proleg much bigger than the others, but this is not always evident in younger larvae. As Moo suggests, keeping some larvae and rearing them is the safest method (until we know the life-history of all the species Wink). If you have the opportunity, visit the site at a later date and collect puparia - it's much easier to rear from them!
Tony Irwin
#8 Print Post
Posted on 11-10-2008 15:14

Location: Israel
Posts: 172
Joined: 01.09.08

Thank to all
rearing is not option at the moment
but I'll try to be in the place before the nearest rain (next week) and photo them out of the water
My insects album
Assorted flies from china
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13.10.20 17:16
You can edit your own thread - button "Edit" below.

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