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Wavy-lined Zanclognatha - Hodges#8353 (Zanclognatha jacchusalis)
Photo#41505
Copyright © 2006
Janice Stiefel
Wavy-Lined Zanclognatha -
Zanclognatha jacchusalis
-
Town of Baileys Harbor, Hidden Corners Sanctuary, Door County, Wisconsin, USA
July 30, 2003
Adult came to night light. First time I ever got one to exhibit its hairy legs. ID made from specimen.
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Contributed by
Janice Stiefel
on 23 January, 2006 - 5:40pm
Last updated 8 June, 2017 - 9:25pm
Forelegs
There is another post now of dorsal and ventral views of this species with forelegs extended:
So yes, they are indeed legs. Note from the
ventral view
that the prothorax is highly reduced in size, making the forelegs as far forward as possible.
…
Edward L. Ruden
, 11 September, 2016 - 11:09pm
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Great shot as usual
Those feathery structures are amazing. Can you elaborate on what they are?
…
Beatriz Moisset
, 23 January, 2006 - 6:18pm
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Wavy-Lined Zanclognatha
Janice J. Stiefel That's a good question, Beatriz. I assumed they were legs, but maybe someone else has a better answer. I thought the other photos I have of this species, just weren't revealing their legs. There's a reason why I entitled my moth slide program, "Masters of Display, Deception and Intrigue." Every day brings another surprise!!
…
Janice Stiefel
, 23 January, 2006 - 6:40pm
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Pheromone pencils?
I'm guessing these are "pencils", hair-like extensible processes of the (usually) abdomen, but here on the legs? They exude pheromones, and are found in some female moths. I've seen just one example, from a Pyralid,
Diaphania
, in Costa Rica. One of our species in this genus is called "Melonworm" and has the pencils as well--see
this page
, and
the account
at the Univ. of Florida. I did not know they occurred in other families of moths. A very neat find.
This is an, I think, reasonable hypothesis.
Patrick Coin
Durham, North Carolina
…
Cotinis
, 23 January, 2006 - 9:23pm
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A couple of hints
This moth is a male! In England, members of the genus
Zanclognatha
are commonly called "Fan-foots".
…
A.W. Thomas
, 23 January, 2006 - 10:24pm
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Kinky Antennae
Is the kink on the antennae an indication that this is a male? Then Robin's specimen #24475 would also be a male.
What is the function of the fan legs? could it be that the male can smell the female pheromones with them? Lyn's image #27744 also seems to have feathery structures.
What about
Z. pedipilalis
? With that name I would expect them to have hairy legs .
…
Beatriz Moisset
, 24 January, 2006 - 8:30am
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Yes,
a male character seen on all species in the genus. Have never seen anyone attempting to assign a function to this structure descibed by Forbes (Leps. of NY): "male antennae heavily ciliate, with a knot and tuft at about a third its length and two or three segments bearing strong claws".
…
A.W. Thomas
, 24 January, 2006 - 4:48pm
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Ideas on function?
Any hypotheses on the function of these structures? Are they thought to be camouflage?
Doing a search on "fan-foot" I found another good photo on
this page
, of
Zanclognatha tarsipennalis
, showing the fan-feet.
Patrick Coin
Durham, North Carolina
…
Cotinis
, 24 January, 2006 - 3:35am
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Please see comments
here
…
A.W. Thomas
, 24 January, 2006 - 4:42pm
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