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John King

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Apr 20, 2020
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Beaumaris, Melbourne, Australia

piggsy

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Brisbane, Australia
I wonder why it got so much smaller, anyone knows ?
They got smaller, but some got a lot smaller than others -

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and neither of the theories I've seen (oxygen regulation problems with larval stages of insects at high oxygen concentrations, feathered birds filling the niche back faster after the last big change in atmospheric conditions and the last major extinction) really seem to adequately explain it entirely for me. Odonata have spectacular abilities to regulate oxygen and you see examples that can live on damp leaves to constantly aerated waterfall streams to anoxic mangrove mud, they have a pretty sophisticated and variable set of lungs. And given that the largest ones live in some extremely bird-rich environments I'm not sure that fully explains it either.
 

AllanG

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Brisbane, Australia
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EM1.2 with PL100-400mm

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Joined
Oct 29, 2018
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Charente Maritime, western France
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Roddy
John speaks the truth. Heat does indeed thing things bigger.

Last time I was in Senegal, for example, the mosquitos were so big they would take the door off its hinges and rip your mosquito netting to shreds. The ones here in France, however, I can kill with my bare hands.

Most of the time.

Also, the hippos are bigger in Africa than they are here. I can never find any in my garden :(
 
Joined
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Charente Maritime, western France
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Roddy
Ha, Roddy.

In Queensland, the mosquitoes hunt in packs of three - two of them hold you down, the other one sucks you dry ... :laugh1:
Ha! There's an island in the Bahamas called Rum Cay. I was storm-bound there once twenty years ago and got boat-sick after a few days, and against the advice of the locals, we all decided to walk to a beach some way away from the mooring. Out in the open, in bright midday sun, the crew and I were savaged by mosquitos so large and ferocious they were eating us through our clothing, even as we beat each others' backs with hats and shoes to kill them. It was like being attacked by a small swarm of Chinook helicopters, so loud was the noise and the screaming. We covered the mile or so back to the boat at a sprint, gratefully leaving the unfit far behind as a distraction. The welts from their bites took weeks to disappear.

I have never, ever, anywhere else in the world, seen mosquitos like it. Not in Australia, NZ, Africa, all of my travels through the Caribbean or anywhere else. They were quite simply GIANTS. I have since wondered whether they are endemic to the island.
 
Joined
Oct 29, 2018
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Charente Maritime, western France
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Roddy
Ouch!

The Scotch greys in Queensland are/were about an inch long. Geez they were vicious.

As I have cardiac problems, I have to be careful about mozzie bites. Too easy to get endocarditis from the little mongrels we have here in Melbourne.
Ouch - they seem the same sort of size, then, John. Nasty things when they start carrying vectors. Nile disease is the latest problem here from European carriers, and apparently in the southern part of the Mediterranean zone there have recently been cases of Dengue, too. Arrgh.

Stay safe!
 

Equable

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Feb 2, 2017
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Jersey. Channel Islands
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Rod
Hover fly with Oly 40-150 f4-5.6 R + Raynox dcr-150
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Joined
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Melbourne, Florida
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Ken
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Joined
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Melbourne, Florida
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Joined
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Pond dweller
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11GTCS

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Joined
Jan 25, 2020
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147
Not too many butterflies in Missouri yet, but this red spotted purple stopped by recently to say hello.
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Joined
Jul 5, 2016
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Lincolnshire UK
Panasonic G9, kit 12-60 and small ext tube.

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Joined
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Knoxville, TN
Thrips are tiny ~1mm long insects that feed on plants. They can be found on almost any flower if you look close enough. An interesting note: Thrips is both the singular and plural form of the word. You can have one thrips or you can have many thrips.

Not that good of an image, but you can see the tiny thrips in the disc flowers of this daisy.

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Phil.H

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Joined
Jul 8, 2017
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1,242
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Uk
I went bug hunting again in the garden. This beetle was 2mm in length at the most. Photos taken with my Panagor 90mm macro lens @1:1 + Raynox 150 handheld.

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