the online meeting place for all who love our amphibians and reptiles
Home Page Live Forums Archived Forums Site Search Identify Record Donate Projects Links
Forum Home Forum Home > General > What is it?
  New Posts New Posts RSS Feed - Caterpillar
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Caterpillar

 Post Reply Post Reply Page  12>
Author
Message Reverse Sort Order
Tom Omlette View Drop Down
Senior Member
Senior Member
Avatar

Joined: 07 Nov 2013
Location: Stoke on Trent
Status: Offline
Points: 449
Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom Omlette Quote  Post ReplyReply Direct Link To This Post Topic: Caterpillar
    Posted: 26 Jul 2015 at 9:22am
amazing moth!

good luck with the bat detecting suz. sounds great.

tim


Back to Top
Suzy View Drop Down
Senior Member
Senior Member


Joined: 06 Apr 2005
Location: United Kingdom
Status: Offline
Points: 1447
Post Options Post Options   Thanks (0) Thanks(0)   Quote Suzy Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2015 at 2:00pm
Rereading Noodles's post from July 2012. This is my first year with a bat detector, which is brilliant fun. I have noctules and two types of pipistrelle. I've seen insects doing this dead-fall as a bat gets close -most impressive. Also seen the bats stop and pick insects off leaves of trees and discard wing cases as they fly along with them in their mouths. Like any wild creature you observe frequently, you learn things about them that you don't read in books. 
Suz
Back to Top
JaySteel View Drop Down
Senior Member
Senior Member
Avatar

Joined: 07 May 2010
Location: United Kingdom
Status: Offline
Points: 157
Post Options Post Options   Thanks (0) Thanks(0)   Quote JaySteel Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2015 at 7:09pm
Sorry to dig up an old thread but this beauty came to my garden yesterday on the North Kent / SE London borders. The Jersey Tiger Moth.



Edited by JaySteel - 24 Jul 2015 at 7:09pm
Back to Top
Noodles View Drop Down
Senior Member
Senior Member
Avatar

Joined: 05 Dec 2010
Location: United Kingdom
Status: Offline
Points: 534
Post Options Post Options   Thanks (0) Thanks(0)   Quote Noodles Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 2012 at 12:08pm

Here’s an interesting fact on Garden Tiger moths for you!  Passively foraging bats emit regular pulses of high frequency (ultra)sound. These in turn echo back off the prey and give the bat an indication of the size, flight speed, flight direction and even species of potential prey detected. As the bat closes in this pulse rate increases significantly so that information on the exact location of the prey (and even an interception course) can be determined with ever increasing accuracy. This volley of terminal phase sound is called a feeding buzz and is very much akin to a wet fart on the auld bat detector; as me tutor used to say.

Interestingly many moth species have evolved to detect bat calls and will take evasive action when exposed to them (particularly the terminal feeding buzz). Typically such an action might include closing the wings and dropping like a stone from the air, thus avoiding any interception course identified by the bat. In response, some species of bat specialising in moth predation (Long-eared bats in the UK) have evolved relatively massive ears to enable them to hunt using direct prey generated sound (without the use of ultrasound), therefore overriding the moth’s inherent advantage. Now the Garden Tiger (Rhrooorrr) is a highly unpalatable/toxic species and at some point in time evolved to generate a clicking sound in response to a bat’s terminal feeding buzz (its garish colours advertise this to diurnal predators, however, this is not much use when outwitting sonar). Anyhow, there are two suggested reasons for this ingenious trick a) the clicks generated confuse/jam the bat’s echolocation system enabling the moth to escape b) it is an associative learning device designed to advertise its unpalatability. I have to say I think the latter more plausible, since young, inexperienced, Long-eared bats have been known to take Tiger moths but rarely the adults.

I love the evolutionary process of that, nature’s little beasts continually trying to overcome adversity. At the risk of sounding overly anthropomorphic, I think that makes the Garden Tiger moth a little bit special (but not in the simple minded sense of the word!)  

Back to Top
Suzy View Drop Down
Senior Member
Senior Member


Joined: 06 Apr 2005
Location: United Kingdom
Status: Offline
Points: 1447
Post Options Post Options   Thanks (0) Thanks(0)   Quote Suzy Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2012 at 8:27pm
I usually see a few Jersey tigers most years. I get them in the garden and they often land on windows and stay for hours. All these tigers are very visible in flight - red/orange - but seem to vanish when they land and close their wings. 
Suz
Back to Top
tim-f View Drop Down
Senior Member
Senior Member
Avatar

Joined: 13 Apr 2008
Location: Bristol, UK
Status: Offline
Points: 208
Post Options Post Options   Thanks (0) Thanks(0)   Quote tim-f Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2012 at 5:51pm
Thanks Noodles, but I only saw it stationary for a split second, and then from a few metres away, and I know they're nocturnal, hence lack of confidence in identification.  The Garden Tiger Moth is still what I think it was though.  My office is NE Bristol, and is surrounded by rough ground covered in grass/wild flowers, and then farmland with mature trees and hedgerows.
Back to Top
Noodles View Drop Down
Senior Member
Senior Member
Avatar

Joined: 05 Dec 2010
Location: United Kingdom
Status: Offline
Points: 534
Post Options Post Options   Thanks (0) Thanks(0)   Quote Noodles Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2012 at 12:18pm
Was this the culprit? I do have hard photo copies of the ones i used to rear but i'd have to scan them. This image is off the internet.  A real stunner, highly toxic to predators and apparently in real decline, despite it often featuring in anecdotes from the members of generations past. So an impressive find.  I occasionally see the caterpillars on moorland but rarely the adults. To add insult they never seem to visit to my Robinson moth trap either.


Garden Tiger

There aren't many moths you could mistake it for. Try Scarlet Tiger if in the south (the only real contender), Jersey Tiger or Wood Tiger if in Jersey/Dorset/Devon or near moorland/heathland. 


Scarlet Tiger

I saw Scarlet Tigers several times when living in Reading and they do fly in the day. Also the Magpie moth is superficially similar to the Scarlet and common in gardens. Often seen during the day also.


Magpie moth
P.S. The garden Tiger is typically nocturnal, although can occasionally be seen in the day.



Edited by Noodles - 20 Jul 2012 at 12:21pm
Back to Top
tim-f View Drop Down
Senior Member
Senior Member
Avatar

Joined: 13 Apr 2008
Location: Bristol, UK
Status: Offline
Points: 208
Post Options Post Options   Thanks (0) Thanks(0)   Quote tim-f Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2012 at 11:35pm
Thanks Noodles.

Tuesday lunchtime I saw what I believe was a Garden Tiger Moth.  It only landed for a split second on the outside of my office building and then was off, aided by a brisk breeze.  Never seen one before.

Back to Top
GemmaJF View Drop Down
Admin Group
Admin Group
Avatar

Joined: 25 Jan 2003
Location: Essex
Status: Offline
Points: 4359
Post Options Post Options   Thanks (0) Thanks(0)   Quote GemmaJF Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2012 at 11:49pm
Originally posted by Noodles Noodles wrote:


Plenty of classic aircraft names in there eh Gemma? The Oak Eggar aircraft  would not have had a pleasing ring to it, i suspect. 

Yep the Chipmunk would have been much better named the De Havilland Oak Eggar Moth in my opinion Wink I was lucky enough to see a DH Fox Moth not that long ago. Anyway enough of all that Suzy's observations and your moth knowledge are much more interesting Thumbs Up
Back to Top
Suzy View Drop Down
Senior Member
Senior Member


Joined: 06 Apr 2005
Location: United Kingdom
Status: Offline
Points: 1447
Post Options Post Options   Thanks (0) Thanks(0)   Quote Suzy Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2012 at 10:55pm
Yes Noodles I thought it was Eggars (sorry previous typo). Fast and zig zaggy sounds the ticket.
Suz
Back to Top
 Post Reply Post Reply Page  12>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.06
Copyright ©2001-2016 Web Wiz Ltd.

This page was generated in 0.559 seconds.