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Tortoise Beetles and the Hispines (Cassidinae)
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Microrhopala rubrolineata
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Microrhopala rubrolineata rubrolineata
Photo#373113
Copyright © 2010
Andy Calderwood
Leaf Beetle on Composite -
Microrhopala rubrolineata
Santa Paula area, Toland Park, Ventura County, California, USA
February 23, 2010
Size: 5 mm
The plant is a composite shrub like Erigeron (?), but I found only one of these, so it may not be associated with this plant.
Images of this individual:
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Contributed by
Andy Calderwood
on 23 February, 2010 - 11:31pm
Last updated 5 October, 2017 - 12:03pm
Moved
Moved from
Microrhopala rubrolineata
.
…
Dennis Haines
, 5 October, 2017 - 12:03pm
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nice job, guys.
Moved from
Microrhopala
.
…
v belov
, 24 February, 2010 - 5:43pm
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Microrhopala rubrolineata
Also, according to Staines (2006), M. xerene is not in CA (but close, in NV an UT).
…
Blaine Mathison
, 24 February, 2010 - 5:39pm
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Oh well...
at least I got the genus right. :)
Incidentally, if
xerene
is not in CA, then we seem to have a couple of misidentified images in the Guide (
here
).
…
Ken Wolgemuth
, 24 February, 2010 - 5:53pm
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just because...
a species isnt recorded from a particular area doesnt mean it isn't there :-). It might be good to have a chrysomelid specialist double-check the CA records of M. xerene, though. I can try running some through the key, if the images show the right characters. Thanks!
…
Blaine Mathison
, 25 February, 2010 - 10:07am
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CA range?
I was just doing a bit of reading to see if I could figure out how one distinguishes
M. rubrolineata
from
M. xerene
. Ron and I found a few of these guys on a recent outing -- see his photos
here
. Now, I'm really curious about Blaine's comment that some of the literature doesn't seem to support there being a range for
M. xerene
within CA, especially after finding
this page
which
does
reference a range within our state. Curious to know whether any further information has come to light on this issue or whether a chrysomelid specialist could indeed be consulted on the matter...
…
Harsi S. Parker
, 8 June, 2010 - 12:43am
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Any updates in the past 7 years?
I'm going to encounter one of these sooner or later, would like to know what details need to be photographed.
…
James Bailey
, 18 February, 2017 - 12:14pm
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I am no more knowledgeable...
...than I was 7 years ago on the question of this tricky ID, except that I have now seen several sources corroborating records of
M. xerene
in CA.
I haven't done so myself, but if you register for a free account with JSTOR, you can read "A REVISION OF THE GENUS MICRORHOPALA (COLEOPTERA: CHRYSOMELIDAE) IN AMERICA NORTH OF MEXICO" online for free. From looking at the preview, I'm guessing it probably has some nuggets of wisdom regarding what distinguishes
M. xerene
from
M. rubrolineata
. Here's the link:
https://www.jstor.org/stable/41712020?seq=1#fndtn-page_scan_tab_contents
…
Harsi S. Parker
, 18 February, 2017 - 7:13pm
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Available freely here
https://archive.org/details/cbarchive_121887_arevisionofthegenusmicrorhopal1983
Details:
-Interstriae 9 undulate to slightly serrate; lateral profile angled; tarsal segment 3 cleft ventrally to about half length of segment; eye margined behind by a double row of punctures ...
xerene
-Serrations on interstriae 9 conspicuous; lateral profile of frons not prominent or angulate; tarsal segment 3 cleft ventrally to about 2/3 length of segment; punctures behind eye arranged in a single row, less often confused or arranged in a double row
... 9 (leading to rubrolineata)
Another mention:
[M. rubrolineata] differs from M. vittata and xerene, which are similarly marked with red or orange, by the frons that does not appear prominent, angled, or carinate in profile.
…
James Bailey
, 18 February, 2017 - 7:35pm
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Moved
Moved from
Microrhopala xerene
.
…
Andy Calderwood
, 24 February, 2010 - 2:54pm
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Moved
Moved from
Chalepini
.
…
Andy Calderwood
, 24 February, 2010 - 2:50pm
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Fools rush in...
Just taking a guess for fun until the experts stop by and tell us what it
really
is.
It seems to match both the general appearance and the description of
Microrhopala xerene
:
Of course, appearances can be deceiving... :)
…
Ken Wolgemuth
, 24 February, 2010 - 8:19am
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looks good...
I have Staines' Hispines of North America and can try to run it through the keys later tonight, if someone doesn't get to it first.
…
Blaine Mathison
, 24 February, 2010 - 1:47pm
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ID
How about M. rubrolineata?
…
Andy Calderwood
, 24 February, 2010 - 2:55pm
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