Thread subject: Diptera.info :: Hemerobiidae ?

Posted by Robert Heemskerk on 10-01-2008 21:16
#1
hi otherinsektforum,

Is this larva Hemerobiidae?

place: Amsterdam forest, bridge over water
date: 9-01-2008

Posted by jorgemotalmeida on 10-01-2008 21:31
#2
stout and curved mandibles... it seems it has no tubercles. Tell me if the abdomen is tappered in its extremity.
I agree with Hemerobiidae.
I wait for more opinions.

Posted by Robert Heemskerk on 10-01-2008 22:40
#3
Thank you for your reaction Jorge, I preciate it.
These group of insekts are not easy, so I can learn a lot of it's difficultiesWink

On the inside of the madibles I can see some kind of tubercles, a bit underneath and inside of the mandibles. I give you a magnification of the mouthparts.

I don't know what you meant with 'tappered', distributed ?
Edited by Robert Heemskerk on 10-01-2008 22:42

Posted by Robert Heemskerk on 10-01-2008 22:43
#4
total view (I turned the picture upsidedown)
Edited by Robert Heemskerk on 10-01-2008 22:44

Posted by jorgemotalmeida on 10-01-2008 22:45
#5
it was a typo. IT IS "TAPERED" not tappered. Tapered abdomen means:
to become gradually narrower or thinner toward one end... Wink


Posted by jorgemotalmeida on 10-01-2008 22:50
#6
In Hemerobiidae the body is very slender. In Chrysopidae the body is more stout and it has tubercles and warts in the backs... show me a lateral view of this larva, please. I think I see warts in the back... if so, Chrysopidae.


Posted by Robert Heemskerk on 10-01-2008 23:18
#7
Angry I got only dorsal view.., that's a pitty
Edited by Robert Heemskerk on 10-01-2008 23:19

Posted by jorgemotalmeida on 10-01-2008 23:58
#8
i see warts on the backs. if this confirms, so Chrysopidae. If not.. it must be Hemerobiidae. Smile It would be great if you managed to rear this larva. Smile The imago are much more easy. Wink

Posted by Paul Beuk on 11-01-2008 08:11
#9
Based on the shape of the antennae I'd say Chrysopidae. The ones we get in our samples at the office have tapering antennae (Wink), whereas those of Hemrobiidae are almost club-like at the tip (not really swollen but certainly not getting narrow in a very gradual way like in the images above). I have never seen that character being used in keys, however.

Posted by John Bratton on 12-01-2008 12:07
#10
For what it is worth, the head pattern fits several Hemerobius larvae and none of the other genera as depicted in Killington's 1936/37 Ray Society books.

John Bratton

Posted by Andy Chick on 12-01-2008 15:43
#11
my initial thought was a coleopteran larvae, carabidae but the lack of cerci seems to rule it out

Posted by Robert Heemskerk on 15-01-2008 15:16
#12
Thank you all for your reactions.

I'll say it is mostlike Chrysopidae sp., if you do not agree feel free to tell.

Robert,