Date: Fri, 04 Aug 2000 09:56:48 +0100 From: "Stefan P. Wolf" <wolf@med2.uni-kiel.de> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg2348$foo@default> Subject: strange Nep pest, please ID!
Hi CP fans!
I just lost my N. pervillei :-((((
Some weeks ago it first slowed growing and then stopped. Adult
leaves began to get brown from the BASE, not the tip! Tips stayed
okay until the end. I have it in a very humid fishtank and I
thought it was a fungal problem when yesterday (I declared it
dead by yesterday) I cut a green half (from the tip) of an adult
leaf. On the bottom of the leaf I found what looked like insect
galls (these bladders that form when an insect puts an egg INTO
the leaf tissue by use of an "egg sting". They were next to the
leaf axis, some 10 per leaf, about one mm in diameter and quite
flat (0.1-0.2 mm) -- galls usually are round. When I touched them
with a knife tip they easily went off as they were stiff and only
on the surface - not in the tissue. Imagine a drop of glue/wax that
became hard on a leaf - it will come off just the same. The colour
was bright green, exactly as the leaf, bigger (older?) ones were
brown. On the leaf side they were open but the larvae were too small
to identify without a microscope which I don't have :-(
I guess they will not continue their growth on cut leaves..?
a) What are they?
b) Is it likely that they killed the Nep? They sat on INTACT leaf
parts (close to the tip).
c) Will they kill more? I have no more Neps in this tank but Drosera,
Ceph, VFT and Pings.
Best regards, Stefan.
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