rd2736's picture

Upperside

Observed: 2nd April 2011 By: rd2736rd2736’s reputation in Invertebratesrd2736’s reputation in Invertebrates
Gonepteryx rhamni
Description:
Identifications
Species interactions

No interactions present.

Species with which Brimstone (Gonepteryx rhamni) interacts

Comments

rd2736's picture

Subspecies

I don't know what subspecies this is, any thought would be welcome.

Vinny's picture

Handling?

At the risk of rebuke, I don't like the way you are handling the butterfly. It looks to me like you have hold of its head and thorax which could cause damage. I know Brimstones can be hard to photograph as they are so flighty, but I wouldn't grab hold of one just for the sake of a photo.
Vinny

rd2736's picture

Yes, you're quite right. I

Yes, you're quite right. I need to hold the thorax not the head and thorax as in the latter photo. Thank you for your comment. I shall have a speak again to my lecturer and investigate some courses.

rimo's picture

As you're in England, it's

As you're in England, it's almost certain to be ssp. rhamni - the other ssp in the UK is ssp. gravesi, the Irish form.

I'd also echo Vincent's comments - it's good practice to handle leps as little as possible, and I wouldn't consider getting a photo like this to justify it, personally.

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rd2736's picture

Thank you for the

Thank you for the identication. I'm quite concerned about my handling now this issue has been raised.

I did a lot of work with butterflies in Nicaragua and we caught and handled them all to identify them - working with a PhD student on the expedition. Is this not good practice? I would welcome your feedback.

jonmortin's picture

Recording butterflies

I'm no expert but have 2 techniques. Either I sneak up on them and try to get a good photo (macro zoom useful not to spook them). Id for many species possible from photo. Or, I try to catch them with a proper butterfly net (fine mesh) and transfer them to a see through viewing pot (they fly up into the pot so no handling required). They can then be examined, identified and released without harm. This is useful for tricky species.

rd2736's picture

Thanks for your reply, I will

Thanks for your reply, I will investigate this method further. I envisage though that the butterflies will just fly upwards towards the top of the viewing pot but it must work as you have tried it. Note, my net is a lepidopterist net - at least thats correct.

jonmortin's picture

I didn't explain that very

I didn't explain that very well! Having caught the butterfly you turn the net upside down so it flies up to the bottom of the net. Then you can get it into the pot. Hard to describe it but there may be a better way to explain it!