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Tetraopini
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Milkweed Longhorn Beetles (Tetraopes)
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femoratus or sublaevis (Tetraopes femoratus or sublaevis)
Photo#654628
Copyright © 2012
Robyn Waayers
- -
Tetraopes
Lake Sutherland, San Diego County, California, USA
June 9, 2012
Size: ~15 mm
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Contributed by
Robyn Waayers
on 9 June, 2012 - 7:17pm
Last updated 31 December, 2016 - 5:38pm
Which Asclepias?
It is probably too late to find out but knowing the plant we would know the beetle.
T. femoratus
feeds only on
Asclepias speciosa
and
T. sublaevis
on
A. erosa
…
Beatriz Moisset
, 14 October, 2013 - 7:42pm
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This was...
... Asclepias eriocarpa. That is the "common" milkweed of the county, especially in the foothills and mountains. What does that say about which Tetraopes this is? A. erosa is the "desert" milkweed. Much less pubescent leaves.
…
Robyn Waayers
, 14 October, 2013 - 11:57pm
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T. basalis?
T. basalis feeds on A. eriocarpa. I have that information but don't know enough to recognize any Tetraopes. I wish an expert on these beetles would chime in.
…
Beatriz Moisset
, 15 October, 2013 - 7:00am
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T. basalis is on A. eriocarpa
but has purely black legs and bolder elytral markings. So this should be femoratus or sublaevis.
These milkweed species discussed here are all closely related, so it doesn't surprise me to see "host switches".
…
James Bailey
, 25 May, 2017 - 6:41pm
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I have some specimens collected on this milkweed species.
When I have a little more free time, I can photograph them and post the images. Then maybe it could be nailed down.
…
Robyn Waayers
, 15 October, 2013 - 11:25am
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Moved
Moved from
Milkweed Longhorns
.
…
v belov
, 22 October, 2012 - 9:21pm
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Tetraopes all right,
but the red femurs and scape point to either
T. femoratus
or
T. sublaevis
. The lighting is such that I can't make out the shape of the thoracic umbone or whether it is sharply deliniated.
T. sublaevis
is the common species of southern California, and I believe that's what this is. While you can't see the umbone very well it doesn't look sharply defined, and the basal elytra punctures look distinct and sparse.
…
Dennis Haines
, 22 October, 2012 - 5:14pm
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