[Taxacom] Unknown ectoparasitoid - any ideas?
releech at telus.net
Thu Sep 1 06:32:37 CDT 2011
You may have to keep the larva till the parasitoid pupates and becomes an
That way, you have the host and the parasite.
We get "little white things" frequently on spiders, and they are usually
From: taxacom-bounces at mailman.nhm.ku.edu
[mailto:taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Ekaterina Shevtsova
Sent: September-01-11 3:26 AM
To: taxacom at mailman.nhm.ku.edu
Subject: [Taxacom] Unknown ectoparasitoid - any ideas?
Need some expertise for my friend who sent this email below. Thanks a lot!
I am puzzled by some white things I found on a couple of larvae of
/Lithacodes fasciola/. (At first I thought they were /Euplectrus/, but
they aren't unless there is a species totally different than the
/Euplectrus/ I found earlier. Perhaps another type of ectoparasitoid?)
I wondered if you've run across anything like this. I find them here in
the wild often. The day I found this one I also found two others.
1.One larva has one white 'thing' on/in it. One end of the white thing
curls downward into the caterpillar. I haven't been able to take a good
clear photo of it because it is so small. In this image you can see how
the end of it to the right is curved downward into the moth larva.
2.The second larva is healthy, as far as I can tell.
3.The third larva had three white things.
·Side note: It was also parasitized by a large wasp. The night after I
found it, it molted and all that was left was the wasp larva inside a
membrane. It made a cocoon inside the membrane. It was fascinating --
I filmed it best that I could.
I am more interested in the white things. They are hard like a shell. I
picked at them with a dental tool to move them but they didn't budge
without moving the moth larvae. I didn't try to remove any of them
after I realized how tightly they were stuck to/in the larvae. The
larva with one white thing is clearly damaged at the point where it has
pierced the skin.
Do you have any idea what they are? Where should I begin looking?
Lund University, Department of Biology
SE-22362 Lund, Sweden
Ekaterina.Shevtsova at cob.lu.se <mailto:Ekaterina.Shevtsova at cob.lu.se>
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