[NatureNS] Fall Dandelion, ants

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Date: Thu, 7 Aug 2014 06:39:25 -0700
From: Paul MacDonald <paulrita2001@yahoo.com>
To: "naturens@chebucto.ns.ca" <naturens@chebucto.ns.ca>
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I was out on a river the other evening and was standing beside a=A0 bed of =
Pickerel Weed ( Pontederia cordata ). It was in full bloom and was covered =
with bees and other insects. As it is plentiful in NS it may be an importan=
t food source for pollen insects.=0AEnjoy the summer=0APaul=0A=0A=0AOn Wedn=
esday, August 6, 2014 10:12:26 PM, Stephen Shaw <srshaw@Dal.Ca> wrote:=0A=
=A0=0A=0A=0A=0AHi Dave * 2 and others, =0AEarlier, last year, Fred Schueler=
 mentioned a fly that makes galls in golden rod stems, and that has an inte=
resting life history.=A0 The larva overwinters in the gall during the freez=
e-up, but according to the Storeys makes protective antifreezes, so is able=
 to survive, eventually pupate and emerge successfully the following spring=
.=A0 The adult is figured in Steve Marshall's recent compendious 'Flies' bo=
ok, that I'd also endorse enthusiastically.=A0 The Golden Rod Fly can't fly=
 very well or at all, so if its clump of golden rod is an isolated stand it=
 may remain confined there as if marooned on an island.=A0 Last year I exam=
ined a very large interconnected stand of the plant on the seaward side of =
York Redoubt (old fort outside Halifax) that looked like prime real estate =
for the fly,=A0 but didn't find any galls at all.=0A=0AIn the Mt Uniacke Ho=
use grounds the weekend before last the golden rod flowers (popular with fl=
ies) were just coming out, and I examined ~15 isolated stands of the plant,=
 probably averaging 20-30 feet separation.=A0 Only one had a number of gall=
s (8), another had one, and the rest had none.=A0 Has anyone in their local=
 travels come across larger numbers of galls anywhere?=A0 They are quite ob=
vious, greenish-yellow like the stem and placed about 3/4 of the way up it,=
 and about 1.5 cm in diameter.=A0  I'd like to collect a few specimens but =
don't want to decimate the small group of 8 at Mt Uniacke.=A0 I don't know =
if it is at all realistic, but a few weeks with the gall in the fridge migh=
t possibly be enough to simulate winter and hasten development of the larva=
 to pupa, and stimulate emergence in a month or so, without me having to wa=
it until next Spring.=A0 =0ASteve (Hfx)=0AP.S.=A0 The only other insect-att=
ractive flowerhead abundant at Mt U was the purplish thistle-like 'Ironweed=
' (the name I was given).=A0 Whether or not it is the same species, shouldn=
't Knapweed be spelled with a 'K'?=0A______________________________________=
__=0A=0AFrom: naturens-owner@chebucto.ns.ca [naturens-owner@chebucto.ns.ca]=
 on behalf of David & Alison Webster [dwebster@glinx.com]=0ASent: Wednesday=
, August 6, 2014 7:12 PM=0ATo: NatureNS@chebucto.ns.ca=0ASubject: [NatureNS=
] Fall Dandelion, ants=0A=0ADear All,=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Aug 6, 2014=0A=
=A0 =A0 Gnapweed (Centaurea nigra) is just about over now in the yard and W=
ild Carrot (Daucus carota) is half spent so Fall Dandelion (Leontodon autum=
nalis) has become a prefered spot for feeding; 4-5 species of small Bees lo=
aded with pollen this morning. White Clover continues to feed the odd Bumbl=
e Bee.=0A=0A=A0 =A0 I don't recall having noticed this previously but the m=
ost recently expanded umbels of WC (which also had more insects than older =
umbels) were facing the sun. Also late this afternoon all of the L. autumna=
lis flowers were closed up tight; presumably they will open again tomorrow.=
=0A=0A=A0 =A0 I saw flying ants twice today; a small swarm emerging from th=
e ground at 68 Campbell and one ant ~3 hours later at 16 Overlook.=0A=0AYt,=
 Dave Webster, Kentville
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:He=
lveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;fo=
nt-size:14pt"><div><span>I was out on a river the other evening and was sta=
nding beside a&nbsp; bed of Pickerel Weed ( Pontederia cordata ). It was in=
 full bloom and was covered with bees and other insects. As it is plentiful=
 in NS it may be an important food source for pollen insects.</span></div><=
div><span>Enjoy the summer</span></div><div><span>Paul</span></div><div cla=
ss=3D"qtdSeparateBR"><br><br></div><div class=3D"yahoo_quoted" style=3D"dis=
play: block;"><div><font face=3D"Arial" size=3D"2">On Wednesday, August 6, =
2014 10:12:26 PM, Stephen Shaw &lt;srshaw@Dal.Ca&gt; wrote:<br>&nbsp;</font=
></div><div style=3D"font-family: HelveticaNeue, Helvetica Neue, Helvetica,=
 Arial, Lucida Grande, sans-serif; font-size: 14pt;"><div style=3D"font-fam=
ily: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-s=
erif;
 font-size: 12pt;">   <br><br> <div class=3D"y_msg_container">Hi Dave * 2 a=
nd others, <br clear=3D"none">Earlier, last year, Fred Schueler mentioned a=
 fly that makes galls in golden rod stems, and that has an interesting life=
 history.&nbsp; The larva overwinters in the gall during the freeze-up, but=
 according to the Storeys makes protective antifreezes, so is able to survi=
ve, eventually pupate and emerge successfully the following spring.&nbsp; T=
he adult is figured in Steve Marshall's recent compendious 'Flies' book, th=
at I'd also endorse enthusiastically.&nbsp; The Golden Rod Fly can't fly ve=
ry well or at all, so if its clump of golden rod is an isolated stand it ma=
y remain confined there as if marooned on an island.&nbsp; Last year I exam=
ined a very large interconnected stand of the plant on the seaward side of =
York Redoubt (old fort outside Halifax) that looked like prime real estate =
for the fly,&nbsp; but didn't find any galls at all.<br clear=3D"none"><br
 clear=3D"none">In the Mt Uniacke House grounds the weekend before last the=
 golden rod flowers (popular with flies) were just coming out, and I examin=
ed ~15 isolated stands of the plant, probably averaging 20-30 feet separati=
on.&nbsp; Only one had a number of galls (8), another had one, and the rest=
 had none.&nbsp; Has anyone in their local travels come across larger numbe=
rs of galls anywhere?&nbsp; They are quite obvious, greenish-yellow like th=
e stem and placed about 3/4 of the way up it, and about 1.5 cm in diameter.=
&nbsp;  I'd like to collect a few specimens but don't want to decimate the =
small group of 8 at Mt Uniacke.&nbsp; I don't know if