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Date: Wed, 24 Jun 2020 14:00:18 -0700
From: Dennis Paulson <dennispaulson...>
Subject: Re: [EXTERNAL] [CalOdes] More on Santa Barbara's Black Spreadwings

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Hi Nick,

I think the only genera in North America that have species that use this b=
reeding strategy are Lestes, Aeshna, and Sympetrum. Examples in California =
would be L. unguiculatus (possibly others), A. constricta (well, maybe in C=
A), and S. internum, madidum, obtrusum and pallipes.=20

Obviously this would be something more typical of the uplands of northern =
California.

Dennis

> On Jun 24, 2020, at 1:13 PM, Lethaby, Nick via groups.io <nlethaby=3Dti.=
<com...> wrote:
>=20
> Dennis,
>
> Are there any other =E2=80=98resident=E2=80=99 species in CA (e.g. not r=
ainpool gliders, etc.) that employ this strategy. Hitherto, I had assumed t=
hat seasonal ponds were a bad place to look for resident ode populations be=
cause the populations would be killed off when the pond dried out. We may n=
eed to be paying more attention to these habitats.
>
> Regards, Nick
> =C2=A0 <>
> From: <CalOdes...> <mailto:<CalOdes...> [mailto:CalOdes@group=
s.io <mailto:<CalOdes...>] On Behalf Of Dennis Paulson
> Sent: Wednesday, June 24, 2020 12:04 PM
> To: Hugh Ranson
> Cc: <CalOdes...> <mailto:<CalOdes...>
> Subject: [EXTERNAL] Re: [CalOdes] More on Santa Barbara's Black Spreadwi=
ngs
>
> As Jim said, this is SOP for many spreadwings. Indeed, when the rains co=
me they=E2=80=99ll flood the basin, and as the temperatures rise in spring,=
the eggs will hatch, and the larvae will fall into the water. They hatch i=
nto a prolarva, which is a funny-looking little thing that wiggles its way =
out of the plant and into the water, then immediately molts into the first-=
instar larva, which actually looks like a larval damselfly. Then they will =
grow fairly quickly and emerge in a month or two to begin the cycle again.
>
> The adults spend some time away from the water in an immature condition,=
then mature sexually and come back to the water to oviposit in plants, oft=
en over dry basins. I presume they have a way of recognizing places that wi=
ll be flooded in the future, perhaps even by the plant species that grow th=
ere. It doesn=E2=80=99t always work, and you can envision how badly drought=
s could affect a species such as this one.
>
> Dennis Paulson
> Seattle
>
> On Jun 24, 2020, at 11:40 AM, Hugh Ranson <hranson...> <mai=
lto:<hranson...>> wrote:
>
> Last week I wrote here about Nick Lethaby's and my discovery of a new sp=
ecies for Santa Barbara county, CA, the Black Spreadwing at a seasonal pond=
along West Camino Cielo, which runs along the spine of the Santa Ynez Moun=
tain range. Yesterday, Larry Ballard, Mark Bright, Bill Murdoch, Wim van Da=
m, and I ventured back to the pond. The water level had dropped a fair amou=
nt, but the numbers of Black Spreadwings had gone the other way. We were go=
bsmacked by what we found. There were well over 200 individuals. We counted=
more than 80 pairs in wheel and tandem, and these were the insects visible=
from one spot only. The cropped photos give some idea of the numbers. All =
spreadwings netted, photographed, or viewed through binoculars were Black S=
preadwing. I presume that they are laying eggs on (or in?) the emergent veg=
etation, and these eggs will survive after the pond dries and then the firs=
t winter rains arrive (usually November or December). According to Jim John=
son, "this is standard operating procedure for many spreadwings in that hab=
itat."
>=20
>=20
> What happens next? Do the eggs hatch and the larvae fall into the water?=
Does anyone know the mechanism the species would employ for getting back t=
o the water?
>=20
>=20
> Mark Bright photographed spreadwings at this same location last summer, =
and while the photos are not conclusive, they are very much suggestive of t=
he same species, so it's likely they've been around for a while. Other spec=
ies present included Wandering Glider (1), Common Whitetail (1), Western Fo=
rktail (1), and Common Green Darner (1).
>=20
>=20
> Hugh Ranson
> Santa Barbara
> <_MG_6039.jpg><_MG_6032.jpg><_MG_5965.jpg>
>
>=20


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html charset=
=3Dutf-8"></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: =
space; -webkit-line-break: after-white-space;" class=3D"">Hi Nick,<div clas=
s=3D""><br class=3D""></div><div class=3D"">I think the only genera in Nort=
h America that have species that use this breeding strategy are <i class=3D=
"">Lestes</i>, <i class=3D"">Aeshna</i>, and <i class=3D"">Sympetrum</i>. E=
xamples in California would be <i class=3D"">L. unguiculatus</i> (possibly =
others), <i class=3D"">A. constricta</i> (well, maybe in CA), and <i class=
=3D"">S. internum</i>, <i class=3D"">madidum</i>, <i class=3D"">obtrusum</=
i> and <i class=3D"">pallipes</i>.&nbsp;</div><div class=3D""><br class=3D"=
"></div><div class=3D"">Obviously this would be something more typical of t=
he uplands of northern California.</div><div class=3D""><br class=3D""></di=
v><div class=3D"">Dennis</div><div class=3D""><br class=3D""><div><blockquo=
te type=3D"cite" class=3D""><div class=3D"">On Jun 24, 2020, at 1:13 PM, Le=
thaby, Nick via <a href=3D"http://groups.io" class=3D"">groups.io</a> &lt;<=
a href=3D"mailto:nlethaby=<3Dti.com...>" class=3D"">nlethaby=3Dti.com@=
groups.io</a>&gt; wrote:</div><br class=3D"Apple-interchange-newline"><div =
class=3D""><div class=3D"WordSection1" style=3D"page: WordSection1; font-fa=
mily: ArialMT; font-size: 18px; font-style: normal; font-variant-caps: norm=
al; font-weight: normal; letter-spacing: normal; text-align: start; text-in=
dent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -w=
ebkit-text-stroke-width: 0px;"><div style=3D"margin: 0in 0in 0.0001pt; font=
-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span style=
=
=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, =
125);" class=3D"">Dennis,<o:p class=3D""></o:p></span></div><div style=3D"m=
argin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', s=
erif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, san=
s-serif; color: rgb(31, 73, 125);" class=3D""><o:p class=3D"">&nbsp;</o:p><=
/span></div><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-f=
amily: 'Times New Roman', serif;" class=3D""><span style=3D"font-size: 11pt=
; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Ar=
e there any other =E2=80=98resident=E2=80=99 species in CA (e.g. not rainpo=
ol gliders, etc.) that employ this strategy. Hitherto, I had assumed that s=
easonal ponds were a bad place to look for resident ode populations because=
the populations would be killed off when the pond dried out. We may need t=
o be paying more attention to these habitats.<o:p class=3D""></o:p></span><=
/div><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: =
'Times New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; font-=
family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p clas=
s=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0in 0in 0.0001pt; fon=
t-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span styl=
e=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, =
125);" class=3D"">Regards, Nick<o:p class=3D""></o:p></span></div><div styl=
e=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Rom=
an', serif;" class=3D""><a name=3D"_MailEndCompose" class=3D""><span style=
=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, =
125);" class=3D""><o:p class=3D"">&nbsp;</o:p></span></a></div><div class=
=3D""><div style=3D"border-style: solid none none; border-top-width: 1pt; =
border-top-color: rgb(181, 196, 223); padding: 3pt 0in 0in;" class=3D""><di=
v style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times N=
ew Roman', serif;" class=3D""><b class=3D""><span style=3D"font-size: 10pt;=
font-family: Tahoma, sans-serif;" class=3D"">From:</span></b><span style=
=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" class=3D""><span cl=
ass=3D"Apple-converted-space">&nbsp;</span><a href=3D"mailto:CalOdes@groups=
.io" style=3D"color: purple; text-decoration: underline;" class=3D"">CalOde=
<s...></a><span class=3D"Apple-converted-space">&nbsp;</span>[<a href=
=3D"mailto:<CalOdes...>" style=3D"color: purple; text-decoration: und=
erline;" class=3D"">mailto:<CalOdes...></a>]<span class=3D"Apple-conve=
rted-space">&nbsp;</span><b class=3D"">On Behalf Of<span class=3D"Apple-con=
verted-space">&nbsp;</span></b>Dennis Paulson<br class=3D""><b class=3D"">S=
ent:</b><span class=3D"Apple-converted-space">&nbsp;</span>Wednesday, June =
24, 2020 12:04 PM<br class=3D""><b class=3D"">To:</b><span class=3D"Apple-c=
onverted-space">&nbsp;</span>Hugh Ranson<br class=3D""><b class=3D"">Cc:</b=
><span class=3D"Apple-converted-space">&nbsp;</span><a href=3D"mailto:CalOd=
<es...>" style=3D"color: purple; text-decoration: underline;" class=3D=
""><CalOdes...></a><br class=3D""><b class=3D"">Subject:</b><span clas=
s=3D"Apple-converted-space">&nbsp;</span>[EXTERNAL] Re: [CalOdes] More on S=
anta Barbara's Black Spreadwings<o:p class=3D""></o:p></span></div></div></=
div><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: '=
Times New Roman', serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div=
style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times Ne=
w Roman', serif;" class=3D"">As Jim said, this is SOP for many spreadwings.=
Indeed, when the rains come they=E2=80=99ll flood the basin, and as the te=
mperatures rise in spring, the eggs will hatch, and the larvae will fall in=
to the water. They hatch into a prolarva, which is a funny-looking little t=
hing that wiggles its way out of the plant and into the water, then immedia=
tely molts into the first-instar larva, which actually looks like a larval =
damselfly. Then they will grow fairly quickly and emerge in a month or two =
to begin the cycle again.<o:p class=3D""></o:p></div><div class=3D""><div s=
tyle=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New =
Roman', serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div cla=
ss=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-famil=
y: 'Times New Roman', serif;" class=3D"">The adults spend some time away fr=
om the water in an immature condition, then mature sexually and come back t=
o the water to oviposit in plants, often over dry basins. I presume they ha=
ve a way of recognizing places that will be flooded in the future, perhaps =
even by the plant species that grow there. It doesn=E2=80=99t always work, =
and you can envision how badly droughts could affect a species such as this=
one.<o:p class=3D""></o:p></div><div class=3D""><div style=3D"margin: 0in =
0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" clas=
s=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=
=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Rom=
an', serif;" class=3D"">Dennis Paulson<o:p class=3D""></o:p></div></div><di=
v class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-=
family: 'Times New Roman', serif;" class=3D"">Seattle<o:p class=3D""></o:p>=
</div><div class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12=
pt; font-family: 'Times New Roman', serif;" class=3D""><o:p class=3D"">&nbs=
p;</o:p></div><div class=3D""><blockquote style=3D"margin-top: 5pt; margin-=
bottom: 5pt;" class=3D""><div class=3D""><div style=3D"margin: 0in 0in 0.00=
01pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D"">O=
n Jun 24, 2020, at 11:40 AM, Hugh Ranson &lt;<a href=3D"mailto:hranson@gole=
ta.k12.ca.us" style=3D"color: purple; text-decoration: underline;" class=3D=
""><hranson...></a>&gt; wrote:<o:p class=3D""></o:p></div></div=
><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Tim=
es New Roman', serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div cl=
ass=3D""><div class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size:=
12pt; font-family: 'Times New Roman', serif;" class=3D""><span style=3D"fo=
nt-size: 11.5pt; font-family: Helvetica, sans-serif; color: rgb(5, 5, 5);" =
class=3D"">Last week I wrote here about Nick Lethaby's and my discovery of =
a new species for Santa Barbara county, CA, the Black Spreadwing at a seaso=
nal pond along West Camino Cielo, which runs along the spine of the Santa Y=
nez Mountain range. Yesterday, Larry Ballard, Mark Bright, Bill Murdoch, Wi=
m van Dam, and I ventured back to the pond. The water level had dropped a f=
air amount, but the numbers of Black Spreadwings had gone the other way. We=
were gobsmacked by what we found. There were well over 200 individuals. We=
counted more than 80 pairs in wheel and tandem, and these were the insects=
visible from one spot only. The cropped photos give some idea of the numbe=
rs. All spreadwings netted, photographed, or viewed through binoculars were=
Black Spreadwing. I presume that they are laying eggs on (or in?) the emer=
gent vegetation, and these eggs will survive after the pond dries and then =
the first winter rains arrive (usually November or December).<span class=3D=
"Apple-converted-space">&nbsp;</span></span>According to Jim Johnson, "this=
is standard operating procedure for many spreadwings in that habitat."<o:p=
class=3D""></o:p></div><div class=3D""><div style=3D"margin: 0in 0in 0.000=
1pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><s=
pan style=3D"font-size: 11.5pt; font-family: Helvetica, sans-serif; color: =
rgb(5, 5, 5);" class=3D""><br class=3D""><br class=3D""></span><o:p class=
=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0in 0in 0.00=
01pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><=
span style=3D"font-size: 11.5pt; font-family: Helvetica, sans-serif; color:=
rgb(5, 5, 5);" class=3D"">What happens next? Do the eggs hatch and the lar=
vae fall into the water? Does anyone know the mechanism the species would e=
mploy for getting back to the water?</span><o:p class=3D""></o:p></div><div=
class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-f=
amily: 'Times New Roman', serif;" class=3D""><span style=3D"font-size: 11.5=
pt; font-family: Helvetica, sans-serif; color: rgb(5, 5, 5);" class=3D""><b=
r class=3D""><br class=3D""></span><o:p class=3D""></o:p></div></div><div c=
lass=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-fam=
ily: 'Times New Roman', serif;" class=3D""><span style=3D"font-size: 11.5pt=
; font-family: Helvetica, sans-serif; color: rgb(5, 5, 5);" class=3D"">Mark=
Bright photographed spreadwings at this same location last summer, and whi=
le the photos are not conclusive, they are very much suggestive of the same=
species, so it's likely they've been around for a while. Other species pre=
sent included Wandering Glider (1), Common Whitetail (1), Western Forktail =
(1), and Common Green Darner (1).</span><o:p class=3D""></o:p></div></div><=
div class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; fon=
t-family: 'Times New Roman', serif;" class=3D""><span style=3D"font-size: 1=
1.5pt; font-family: Helvetica, sans-serif; color: rgb(5, 5, 5);" class=3D""=
><br class=3D""><br class=3D""></span><o:p class=3D""></o:p></div></div><di=
v class=3D""><div style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-=
family: 'Times New Roman', serif;" class=3D""><span style=3D"font-size: 11.=
5pt; font-family: Helvetica, sans-serif; color: rgb(5, 5, 5);" class=3D"">H=
ugh Ranson</span><o:p class=3D""></o:p></div></div><div class=3D""><div sty=
le=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Ro=
man', serif;" class=3D""><span style=3D"font-size: 11.5pt; font-family: Hel=
vetica, sans-serif; color: rgb(5, 5, 5);" class=3D"">Santa Barbara</span><o=
:p class=3D""></o:p></div></div></div></div><div style=3D"margin: 0in 0in 0=
.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D"=
">&lt;_MG_6039.jpg&gt;&lt;_MG_6032.jpg&gt;&lt;_MG_5965.jpg&gt;<o:p class=3D=
""></o:p></div></div></blockquote></div><div style=3D"margin: 0in 0in 0.000=
1pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><o=
:p class=3D"">&nbsp;</o:p></div></div></div></div><div class=3D""><p class=
=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-fa=
mily: 'Times New Roman', serif;"></p></div></div></div></blockquote></div><=
br class=3D""></div></body></html>

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