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Torpedo Bug (Siphanta acuta)
Photo#588224
Copyright © 2011
R. Berg
Eggs on loquat leaf -
Siphanta acuta
Alameda County, California, USA
September 30, 2011
On fallen, dry loquat leaf. Egg mass was 5.9 mm from end to end.
Images of this individual:
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Contributed by
R. Berg
on 17 October, 2011 - 9:44pm
Last updated 29 October, 2011 - 12:11pm
Moved
Moved from
Flatid Planthoppers
.
…
Charley Eiseman
, 29 October, 2011 - 12:11pm
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Moved
Moved from
Planthoppers
.
…
R. Berg
, 27 October, 2011 - 11:18am
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Covering
Can you describe the substance that's covering the eggs? I'm curious whether it's waxy or resinous, sticky or not, etc...
…
Charley Eiseman
, 18 October, 2011 - 9:02am
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I suspect it's wax
The eggs looked very fresh when found, and the covering looked almost wet. I didn't disturb it enough to get a feel for its texture ("You can look but don't touch"). During incubation, when I misted the leaf fragment with water, droplets beaded on the surface and didn't soak in. Not sticky, I think; it didn't accumulate dust particles. I may be able to tell you more when I can retrieve it from the rearing container without letting too many nymphs escape.
Incidentally, the first linked photo of hatchlings shows material that might be exuviae sticking out of some of the eggshells. This is clearer in the older photo:
. I wonder, do these creatures molt before/during hatching?
…
R. Berg
, 18 October, 2011 - 10:44am
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It's available now
The leaf fragment is out of the container. The eggy patch is so small that all I can say after running a finger over it is, it's dry and smooth. Can you suggest any tests, like seeing how it responds to heat or trying different household chemicals to dissolve it?
…
R. Berg
, 21 October, 2011 - 9:43pm
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I think I've got it...
Compare with
this
egg mass of
Siphanta acuta
, which you've observed on loquat before. The eggs are described
here
, and are said to be glued together with colleterial fluid... not a familiar term to me, but according to
this
it would be a sticky substance when wet; evidently not when dry. I'm satisfied with your description of its consistency--thanks for the follow-up.
…
Charley Eiseman
, 21 October, 2011 - 10:21pm
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Probably S. acuta, then
I followed links from Google. Evidently, colleterial fluid is the stickum that attaches eggs to plants, and some insect species may secrete two kinds.
…
R. Berg
, 22 October, 2011 - 10:49am
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