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--Apple-Mail=_C76CE2E6-0A19-4BF4-A1E2-4AD3C213DA0A
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Randy=92s comment below about early tabanids not needing a blood meal to =
form eggs, is the same point made by Murray Colbo concerning certain =
kinds of black flies after their emergence from the water. Also I am =
copying this to Phil Taylor at Acadia Biology, who is very interested in =
tabanids. Cheers from Jim in Wolfville.
Begin forwarded message:
> From: Paul Ruggles <cpruggles@eastlink.ca>
> Subject: Re: [NatureNS] flies v2
> Date: June 13, 2016 at 9:49:58 PM ADT
> To: naturens@chebucto.ns.ca
> Reply-To: naturens@chebucto.ns.ca
>=20
> Thanks Steve and Randy.=20
> Paul.
>=20
> On 2016-06-13, at 4:25 PM, Randy Lauff wrote:
>=20
>> Just a point of note, many Tabanids (horse and deer flies) do not =
need a blood meal to produce the first batch of eggs. It's the second =
and subsequent batches, presumably after initial stored resources are =
gone, that the blood meal is required.
>>=20
>> Randy
>>=20
>> _________________________________
>> RF Lauff
>> Way in the boonies of
>> Antigonish County, NS.
>>=20
>> On 13 June 2016 at 15:13, Stephen Shaw <srshaw@dal.ca> wrote:
>> Hi Paul,
>> Very unlikely. 'Deer flies' is the well-recognized name for tabanids =
(family Tabanidae) of the large genus Chrysops, from the primitive end =
of the very large section of relatively recently evolved flies, those =
grouped as Brachycera ('short horns', referring to their relatively =
short antennae). Like other tabanids, the females require a blood meal =
to develop their eggs, and are the ones that commonly bother you in the =
summer in wooded areas or clearings by trying to land on the back of =
your neck and 'bite' you (actually, saw into you). The males don't do =
this, are seldom seen, and visit flowers.
>>=20
>> There are 25* or so eastern Canadian species pictured in a useful =
identification guide that I can't lay hands on at present**, and ~45 =
species listed for Canada and Alaska by H. J. Teskey (1990) in a very =
large publication on Tabanidae, available as a free PDF file from a Govt =
of Canada site, but which may cause indigestion.
>>=20
>> As far as I know, none of the Chrysops around here assemble in =
hilltop swarms such as you observed.
>> Steve
>> **updating this, the Chrysops ID guide is available here:
>> http://cjai.biologicalsurvey.ca/tm-08/chrysops15.htm
>> (*indicates that there are 40 species recognized east of the Rockies, =
not 25; click on Gallery to see colour photos)
>> ________________________________________
>> From: naturens-owner@chebucto.ns.ca [naturens-owner@chebucto.ns.ca] =
on behalf of Paul Ruggles [cpruggles@eastlink.ca]
>> Sent: Monday, June 13, 2016 11:38 AM
>> To: naturens@chebucto.ns.ca
>> Subject: [NatureNS] flies
>>=20
>> Steve
>> Could they have been "deer" flys?
>> Paul.
>>=20
>=20
--Apple-Mail=_C76CE2E6-0A19-4BF4-A1E2-4AD3C213DA0A
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;">Randy=92s comment below about early tabanids not =
needing a blood meal to form eggs, is the same point made by Murray =
Colbo concerning certain kinds of black flies after their emergence from =
the water. Also I am copying this to Phil Taylor at Acadia =
Biology, who is very interested in tabanids. Cheers from Jim in =
Wolfville.<br><div><br><div>Begin forwarded message:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px;"><span style=3D"font-family:'Helvetica'; color:rgba(0, =
0, 0, 1.0);"><b>From: </b></span><span =
style=3D"font-family:'Helvetica';">Paul Ruggles <<a =
href=3D"mailto:cpruggles@eastlink.ca">cpruggles@eastlink.ca</a>><br></s=
pan></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px;"><span =
style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, 1.0);"><b>Subject: =
</b></span><span style=3D"font-family:'Helvetica';"><b>Re: [NatureNS] =
flies v2</b><br></span></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span =
style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, 1.0);"><b>Date: =
</b></span><span style=3D"font-family:'Helvetica';">June 13, 2016 at =
9:49:58 PM ADT<br></span></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span =
style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, 1.0);"><b>To: =
</b></span><span style=3D"font-family:'Helvetica';"><a =
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a><br></s=
pan></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px;"><span =
style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, =
1.0);"><b>Reply-To: </b></span><span style=3D"font-family:'Helvetica';"><a=
=
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a><br></s=
pan></div><br><div><div style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; =
">Thanks Steve and =
Randy. <div>Paul.</div><div><br><div><div>On 2016-06-13, at =
4:25 PM, Randy Lauff wrote:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div =
dir=3D"ltr">Just a point of note, many Tabanids (horse and deer flies) =
do not need a blood meal to produce the first batch of eggs. It's the =
second and subsequent batches, presumably after initial stored resources =
are gone, that the blood meal is =
required.<div><br></div><div>Randy</div></div><div =
class=3D"gmail_extra"><br clear=3D"all"><div><div =
class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature">_________________________________<br>RF=
Lauff<br>Way in the boonies of<br>Antigonish County, NS.</div></div>
<br><div class=3D"gmail_quote">On 13 June 2016 at 15:13, Stephen Shaw =
<span dir=3D"ltr"><<a href=3D"mailto:srshaw@dal.ca" =
target=3D"_blank">srshaw@dal.ca</a>></span> wrote:<br><blockquote =
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex">Hi Paul,<br>
Very unlikely. 'Deer flies' is the well-recognized name for =
tabanids (family Tabanidae) of the large genus Chrysops, from the =
primitive end of the very large section of relatively recently evolved =
flies, those grouped as Brachycera ('short horns', referring to their =
relatively short antennae). Like other tabanids, the females =
require a blood meal to develop their eggs, and are the ones that =
commonly bother you in the summer in wooded areas or clearings by trying =
to land on the back of your neck and 'bite' you (actually, saw into =
you). The males don't do this, are seldom seen, and visit =
flowers.<br>
<br>
There are 25* or so eastern Canadian species pictured in a useful =
identification guide that I can't lay hands on at present**, and ~45 =
species listed for Canada and Alaska by H. J. Teskey (1990) in a very =
large publication on Tabanidae, available as a free PDF file from a Govt =
of Canada site, but which may cause indigestion.<br>
<br>
As far as I know, none of the Chrysops around here assemble in hilltop =
swarms such as you observed.<br>
Steve<br>
**updating this, the Chrysops ID guide is available here:<br>
<a href=3D"http://cjai.biologicalsurvey.ca/tm-08/chrysops15.htm" =
rel=3D"noreferrer" =
target=3D"_blank">http://cjai.biologicalsurvey.ca/tm-08/chrysops15.htm</a>=
<br>
(*indicates that there are 40 species recognized east of the Rockies, =
not 25; click on Gallery to see colour photos)<br>
________________________________________<br>
From: <a =
href=3D"mailto:naturens-owner@chebucto.ns.ca">naturens-owner@chebucto.ns.c=
a</a> [<a =
href=3D"mailto:naturens-owner@chebucto.ns.ca">naturens-owner@chebucto.ns.c=
a</a>] on behalf of Paul Ruggles [<a =
href=3D"mailto:cpruggles@eastlink.ca">cpruggles@eastlink.ca</a>]<br>
Sent: Monday, June 13, 2016 11:38 AM<br>
To: <a =
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a><br>
Subject: [NatureNS] flies<br>
<br>
Steve<br>
Could they have been "deer" flys?<br>
Paul.<br>
</blockquote></div><br></div>
=
</blockquote></div><br></div></div></div></blockquote></div><br></body></h=
tml>=
--Apple-Mail=_C76CE2E6-0A19-4BF4-A1E2-4AD3C213DA0A--
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