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Symmetrischema striatella - Hodges#2039 (Symmetrischema striatella)
Photo#624734
Copyright © 2012
Shawn Wainwright
Unknown Moth -
Symmetrischema striatella
Toms River, Ocean County, New Jersey, USA
March 29, 2012
Size: tiny
Contributed by
Shawn Wainwright
on 29 March, 2012 - 6:01pm
Last updated 5 April, 2012 - 11:36am
Moved
Moved from
ID Request
.
…
Maury J. Heiman
, 5 April, 2012 - 11:36am
M. plutella vs. S. striatella
According to the images on this site, this moth could be either
Megacraspedus plutella
or
Symmetrischema striatella
.
There seems to be a mixup regarding those two species, because it looks to me as though all of the moths pictured under both of those names on BugGuide (BG) and Moth Photographers’ Group (MPG) are the same species, the question being, to which of the two names (if either) do they properly answer?
From Chambers’ original 1874 description of
Megacraspedus plutella
(Canadian Entomologist 6: 244): "head, thorax and the dorsal margin of the primaries to a point beyond the beginning of the ciliae, creamy white, the primaries otherwise dark gray brown, except that the extreme costa is creamy white and the costal margin is obscurely streaked with the same hue..." Given that description, then,
M. plutella
should look something like the related
M. oxyphanes
(an Australian species) as shown in the photo on the left-hand end of the row
here
(BOLD does not have any representatives of
M. plutella
in the taxonomy browser, even though MPG shows a Mark Dreiling photo of a moth identified as
M. plutella
here
). At any rate, Chambers’ description certainly does not match the moths shown as
M. plutella
on BG and MPG.
From Murtfeldt’s original 1900 description of
Symmetrischema striatella
(Canadian Entomologist 32: 163): "A subcostal black, longitudinal line extends from base to apex, curving upward slightly and intensifying at the latter; beneath this, two more or less definite blackish striations, the one on inner margin being quite broad and diffused, while the discal streak is variable, not continuous, often consisting of two or three dashes..."
This is much more in line with the moth that is being shown as both
M. plutella
and
S. striatella
on BG and MPG, and in fact, one of these moths (see
here
) has been DNA barcoded and found to align with
S. striatella
.
Given all of this, it seems most likely that all of the moths being shown as
M. plutella
and
S. striatella
on BG and MPG are in actuality
S. striatella
, and if so, then
S. striatella
would be the determination for the moth in this photo.
…
Terry Harrison
, 3 April, 2012 - 7:14am