Diptera.info

Posted by Robert Heemskerk on 10-01-2008 22:16

hi otherinsektforum,

Is this larva Hemerobiidae?

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

Posted by jorgemotalmeida on 10-01-2008 22:31

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 23:40

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 difficulties;)

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 23:42

Posted by Robert Heemskerk on 10-01-2008 23:43

total view (I turned the picture upsidedown)

Edited by Robert Heemskerk on 10-01-2008 23:44

Posted by jorgemotalmeida on 10-01-2008 23:45

it was a typo. IT IS "TAPERED" not tappered. Tapered abdomen means:
to become gradually narrower or thinner toward one end... ;)

Posted by jorgemotalmeida on 10-01-2008 23:50

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 11-01-2008 00:18

:@ I got only dorsal view.., that's a pitty

Edited by Robert Heemskerk on 11-01-2008 00:19

Posted by jorgemotalmeida on 11-01-2008 00:58

i see warts on the backs. if this confirms, so Chrysopidae. If not.. it must be Hemerobiidae. :) It would be great if you managed to rear this larva. :) The imago are much more easy. ;)

Posted by Paul Beuk on 11-01-2008 09:11

Based on the shape of the antennae I'd say Chrysopidae. The ones we get in our samples at the office have tapering antennae (;)), 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 13:07

#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 16:43

#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 16:16

#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,