[NatureNS] NNS AGM - Floodplain walk - Blister Beetle

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From: Rick Ballard <ideaphore@gmail.com>
Date: Mon, 31 May 2010 19:06:01 -0300
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Thanks Chris, I have updated the photo info.

On Mon, May 31, 2010 at 6:51 PM, Christopher Majka
<c.majka@ns.sympatico.ca>wrote:

> Hi Bob,
>
> There is no doubt that this is a beetle in the genus Meloe. It's certainly
> not *Meloe americanus* (which is not found in Nova Scotia). There are four
> species of *Meloe* found in Nova Scotia, the two very common ones being *Meloe
> angusticollis* Say and *Meloe impressus* Kirby (*Meloe dianellus* Pinto &
> Selander and *Meloe niger* Kirby are also found). It's not possible to
> tell which of these this female is since one needs to see details of the
> punctation on the head and pronotum to differentiate them. *M.* dianellus is
> the only species that has been recorded in Guysborough County, but all the
> species could potentially occur.
>
> These beetles dig in the sand since they lay eggs in the nests of
> ground-nesting bees, their larvae being parasitoids on the larvae and pupae
> of bees. They are also interesting in that the cantharidin is produced by
> the males and is transferred to females during copulation. Cantharidin is a
> significant toxin and a vesicating substance. It has, on occasion, been know
> to cause serious illness (and even deaht) in grazing animals such as horses.
>
> Should you be there again, it would be worth collecting one of these
> specimens to determine the identity of the species.
>
> All the best!
>
> Chris
>
> On 31-May-10, at 6:22 PM, Rick Ballard wrote:
>
> On the walk along the Glenelg, St. Mary's River floodplain with Bob
> Bancroft I took this photo<http://www.flickr.com/photos/ideaphore/4657582046/>of a large flightless Blister
> Beetle <http://en.wikipedia.org/wiki/Meloe> digging in the sand. In fact
> its head is buried in the sand. There was some discussion at the time as to
> whether it was a beetle, since it does not have the usual full wing covers.
> I sent a short note off to www.whatsthisbug.com last night and got an
> answer this morning.
>
> Luckily no one picked it up...Wikipedia says the following:
>
> "They are known as "oil beetles" because they release oily droplets of
> hemolymph from their joints when disturbed; this contains cantharidin, a
> poisonous chemical causing blistering of the skin and painful swelling."
>
> --
> Rick Ballard
> Dartmouth,Nova Scotia, Canada
> http://www.ideaphore.com
>
>
>
>
>    Christopher Majka  <c.majka@ns.sympatico.ca> | Halifax, Nova Scotia,
> Canada
>
> * Research Associate: Nova Scotia Museum |
> http://museum.gov.ns.ca/mnh/research-asfr.htm
> * Review Editor: The Coleopterists Bulletin | http://www.coleopsoc.org/
> * Subject Editor: ZooKeys |
> http://pensoftonline.net/zookeys/index.php/journal/index
> * Associate Editor: Journal of the Acadian Entomological Society |
> http://www.acadianes.org/journal.html
> * Editor: Atlantic Canada Coleoptera |
> http://www.chebucto.ns.ca/Environment/NHR/atlantic_coleoptera.html
>
> *"Whenever I hear of the capture of rare beetles, I feel like an old
> war-horse at the sound of a trumpet."* - Charles Darwin
>
>


-- 
Rick Ballard
Dartmouth,Nova Scotia, Canada
http://www.ideaphore.com

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Thanks Chris, I have updated the photo info.<br><br><div class=3D"gmail_quo=
te">On Mon, May 31, 2010 at 6:51 PM, Christopher Majka <span dir=3D"ltr">&l=
t;c.majka@ns.sympatico.ca&gt=
;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; borde=
r-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div style=3D"wor=
d-wrap: break-word;">Hi Bob,<div><br></div><div>There is no doubt that this=
 is a beetle in the genus Meloe. It&#39;s certainly not <i>Meloe americanus=
</i> (which is not found in Nova Scotia). There are four species of <i>Melo=
e</i> found in Nova Scotia, the two very common ones being=A0<i>Meloe angus=
ticollis</i> Say and=A0<i>Meloe impressus</i> Kirby (<i>Meloe dianellus</i>=
 Pinto &amp; Selander and=A0<i>Meloe niger</i> Kirby are also found). It&#3=
9;s not possible to tell which of these this female is since one needs to s=
ee details of the punctation on the head and pronotum to differentiate them=
. <i>M.</i>=A0<span style=3D"font-style: italic;">dianellus</span>=A0is the=
 only species that has been recorded in Guysborough County, but all the spe=
cies could potentially occur.</div>

<div><br></div><div>These beetles dig in the sand since they lay eggs in th=
e nests of ground-nesting bees, their larvae being parasitoids on the larva=
e and pupae of bees. They are also interesting in that the cantharidin is p=
roduced by the males and is transferred to females during copulation. Canth=
aridin is a significant toxin and a vesicating substance. It has, on occasi=
on, been know to cause serious illness (and even deaht) in grazing animals =
such as horses.</div>

<div><br></div><div>Should you be there again, it would be worth collecting=
 one of these specimens to determine the identity of the species.</div><div=
><br></div><div>All the best!</div><div><br></div><div>Chris</div><div>

<div></div><div class=3D"h5"><div><br><div><div>On 31-May-10, at 6:22 PM, R=
ick Ballard wrote:</div><br><blockquote type=3D"cite">On the walk along the=
 Glenelg, St. Mary&#39;s River floodplain with Bob Bancroft I took this <a =
href=3D"http://www.flickr.com/photos/ideaphore/4657582046/" target=3D"_blan=
k">photo</a> of a large flightless <a href=3D"http://en.wikipedia.org/wiki/=
Meloe" target=3D"_blank">Blister Beetle</a> digging in the sand. In fact it=
s head is buried in the sand. There was some discussion at the time as to w=
hether it was a beetle, since it does not have the usual full wing covers. =
I sent a short note off to <a href=3D"http://www.whatsthisbug.com" target=
=3D"_blank">www.whatsthisbug.com</a> last night and got an answer this morn=
ing.<br>

 <br>Luckily no one picked it up...Wikipedia says the following:<br><br><di=
v style=3D"margin-left: 40px;">&quot;They are known as &quot;oil beetles&qu=
ot; because they release oily droplets of hemolymph from their joints when =
disturbed; this contains cantharidin, a poisonous chemical causing blisteri=
ng of the skin and painful swelling.&quot;<br clear=3D"all">

</div><br>-- <br>Rick Ballard <br>Dartmouth,Nova Scotia, Canada <br><a href=
=3D"http://www.ideaphore.com" target=3D"_blank">http://www.ideaphore.com</a=
><br></blockquote></div><br></div><br><br></div></div><div> <span style=3D"=
border-collapse: separate; color: rgb(0, 0, 0); font-family: &#39;Times New=
 Roman&#39;; font-size: 14px; font-style: normal; font-variant: normal; fon=
t-weight: normal; letter-spacing: normal; line-height: normal; text-indent:=
 0px; text-transform: none; white-space: normal; word-spacing: 0px;"><div s=
tyle=3D"word-wrap: break-word;">

<span style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family:=
 &#39;Times New Roman&#39;; font-size: 14px; font-style: normal; font-varia=
nt: normal; font-weight: normal; letter-spacing: normal; line-height: norma=
l; text-indent: 0px; text-transform: none; white-space: normal; word-spacin=
g: 0px;"><div style=3D"word-wrap: break-word;">

<span style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family:=
 &#39;Times New Roman&#39;; font-size: 14px; font-style: normal; font-varia=
nt: normal; font-weight: normal; letter-spacing: normal; line-height: norma=
l; text-indent: 0px; text-transform: none; white-space: normal; word-spacin=
g: 0px;"><div style=3D"word-wrap: break-word;">

<span style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family:=
 &#39;Times New Roman&#39;; font-size: 14px; font-style: normal; font-varia=
nt: normal; font-weight: normal; letter-spacing: normal; line-height: norma=
l; text-indent: 0px; text-transform: none; white-space: normal; word-spacin=
g: 0px;"><div style=3D"word-wrap: break-word;">

<span style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family:=
 &#39;Times New Roman&#39;; font-size: 14px; font-style: normal; font-varia=
nt: normal; font-weight: normal; letter-spacing: normal; line-height: norma=
l; text-indent: 0px; text-transform: none; white-space: normal; word-spacin=
g: 0px;"><div style=3D"word-wrap: break-word;">

<span style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family:=
 &#39;Times New Roman&#39;; font-size: 14px; font-style: normal; font-varia=
nt: normal; font-weight: normal; letter-spacing: normal; line-height: norma=
l; text-indent: 0px; text-transform: none; white-space: normal; word-spacin=
g: 0px;"><div style=3D"word-wrap: break-word;">

<div><font size=3D"3"><span style=3D"font-size: 12px;">Christopher Majka =
=A0&lt;<a href=3D"mailto:c.majka@ns.sympatico.ca" target=3D"_blank">c.majka=
@ns.sympatico.ca</a>&gt; |=A0Halifax, Nova Scotia, Canada</span></font></di=
v><div><font size=3D"3"><span style=3D"font-size: 12px;"><br>

</span></font></div><div><font size=3D"3"><span style=3D"font-size: 12px;">=
* Research Associate: Nova Scotia Museum |=A0<a href=3D"http://museum.gov.n=
s.ca/mnh/research-asfr.htm" target=3D"_blank">http://museum.gov.ns.ca/mnh/r=
esearch-asfr.htm</a></span></font></div>

<div><font size=3D"3"><span style=3D"font-size: 12px;">* Review Editor: The=
 Coleopterists Bulletin |=A0<a href=3D"http://www.coleopsoc.org/" target=3D=
"_blank">http://www.coleopsoc.org/</a></span></font></div><div><font size=
=3D"3"><span style=3D"font-size: 12px;">* Subject Editor: ZooKeys |=A0<a hr=
ef=3D"http://pensoftonline.net/zookeys/index.php/journal/index" target=3D"_=
blank">http://pensoftonline.net/zookeys/index.php/journal/index</a></span><=
/font></div>

<div><font size=3D"3"><span style=3D"font-size: 12px;">* Associate Editor: =
Journal of the Acadian Entomological Society |=A0<a href=3D"http://www.acad=
ianes.org/journal.html" target=3D"_blank">http://www.acadianes.org/journal.=
html</a></span></font></div>

<div><font size=3D"3"><span style=3D"font-size: 12px;">* Editor: Atlantic C=
anada Coleoptera |=A0<a href=3D"http://www.chebucto.ns.ca/Environment/NHR/a=
tlantic_coleoptera.html" target=3D"_blank">http://www.chebucto.ns.ca/Enviro=
nment/NHR/atlantic_coleoptera.html</a></span></font></div>

<div><font size=3D"3"><span style=3D"font-size: 12px;"><br></span></font></=
div><div><font size=3D"3"><font size=3D"3"><span style=3D"font-size: 12px;"=
><i>&quot;Whenever I hear of the capture of rare=A0beetles, I feel like an =
old war-horse at the sound of a trumpet.&quot;</i></span></font><span style=
=3D"font-size: 12px;"><span>=A0</span>- Charles=A0Darwin</span></font></div=
>

</div></span></div></span></div></span></div></span></div></span></div></sp=
an> </div><br></div></blockquote></div><br><br clear=3D"all"><br>-- <br>Ric=
k Ballard <br>Dartmouth,Nova Scotia, Canada <br><a href=3D"http://www.ideap=
hore.com">http://www.ideaphore.com</a><br>



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