Diptera.info

Posted by Robert Heemskerk on 24-01-2009 23:59

hi ohter insectforum,

I found a parasitaric larvae (wasp) on Araniella spec.

Next to this spider, I found some kind of Ichneumonidae sp.

Is there a connection between larvae and wasp? or just accidental?

What kind of wasp are these? (the imago)
This wasp got a clear pterostigma and the foreside of the wing got many hairs.

Edited by Robert Heemskerk on 25-01-2009 00:02

Posted by Robert Heemskerk on 24-01-2009 23:59

next to this spider I found this imago:

Edited by Robert Heemskerk on 25-01-2009 00:00

Posted by Robert Heemskerk on 25-01-2009 00:00

dorsal view

Edited by Robert Heemskerk on 25-01-2009 00:00

Posted by Sundew on 25-01-2009 02:07

Your pics recall the parasitized spider of my thread http://www.dipter...d_id=15117. Chris suggested tribe Polysphinctini of Ephialtinae (= Pimplinae) of Ichneumonidae. I really wonder whether your imago might belong to this tribe.
Regards, Sundew

Posted by lagura on 25-01-2009 02:28

No, not Ichneumonidae. These are Tenthredinidae and most likely Nematinae. Further ID is not possible from photos, I'm afraid.

Posted by Robert Heemskerk on 25-01-2009 11:15

Thank you Sundew for your reaction on ecto-picture and Lars thank you for your explination of the Tenthredinidae sp. (pic2)

Posted by Robert Heemskerk on 25-01-2009 22:40

The Tenthredinidae sp. (pic2) was about 5-6mm

Today I collected another ecto-spider, I'll try to let it grow

The larvae (wasp) on Araniella spec.

Edited by Robert Heemskerk on 25-01-2009 22:47

Posted by cthirion on 25-01-2009 23:59

I find a resemblance with Braconidae to him, especially the antennas and the wing nervation with this large stigma! In more the head is very triangular and not transverse

Posted by Robert Heemskerk on 26-01-2009 17:38

#10

Thank you cthirion, for your comment.
I'll call it Braconidae

Hereby, one lateral close-up from the head

Edited by Robert Heemskerk on 26-01-2009 17:38

Posted by cthirion on 26-01-2009 23:44

#11

The wings of Nematinae on various photographs have a less lengthened, more flexible form and the more transverse head in the absence of being able to see other characters here!

Posted by Jan Willem on 27-01-2009 09:03

#12

I totally agree with Cthirion, this wasp should belong to the family Braconidae. If I had to guess I would say subfamily Braconinae. But you probably won't ask me to guess

Posted by cthirion on 27-01-2009 12:26

#13

Thank you Jan, I feel sometimes quite only in front of such cases!

Edited by cthirion on 27-01-2009 12:27

Posted by pierred on 27-01-2009 20:53

#14

Hello,
Sorry to be boring.
But does somebody have a reference for such exo-paratitic worms on a spider (if I may call them this name) ?

Posted by cthirion on 27-01-2009 22:31

#15

Christine Rollard published on the parasitism of the spiders!

Posted by pierred on 28-01-2009 08:41

#16

Camille,

Thanks for the pointer.
I only found an article by her on Geris parasiting spider eggs.

Posted by cthirion on 28-01-2009 12:48

#17

C. Rollard :Revision des insectes ecto-et endo-parasites d'araneides.
Bull.Soc. ENt. Mulhouse, 1990, (J-Sept, 33-44.