When did "perpendicular" setting become the standard?

[trehopr1]

I've come to notice that many historic specimens dating from the early and middle 1800's seem to have been spread in a different style than those specimens which appear LATER in the 1800's. That is to say, that these early and middle period specimens generally don't have their wings spread at the "perpendicular". So appearance-wise their wings seem to always be drooping somewhat. So, once again somebody thought a new style of setting the wings higher (with the trailing edge of the forewing) being in a straight line from the thorax was more appropriate. And the idea either caught on or it became the new accepted style of all lepidopterists.
Would anyone know if any one individual can rightfully lay claim or credit to this new style which still remains the standard today. When did it first appear in the late 1800's ?

[nomad]

In Britain, the flatter boards seem to have been used more as the 20th century advanced. Our European counterparts were using the latter long before us. It has been mentioned that you could tell earlier British specimens from European ones by our short pins and their curved setting style. 

[Deleted]

All of my saddle set specimens pre date 1920, after this they are all set flat, also on a lot of my old British specimens the forelegs are also prominent as moths are sometimes set a  practice that is no longer in vogue.

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[trehopr1]

I rather like seeing certain moths with their forelegs teased out. I think it enhances them somewhat. After seeing such work posted here (and on the other forum ) I have started teasing out the forelegs of a few specimens of my fresh caught Catocala and larger Sphinx. But, I won't dare to try it on specimens already long set. Better to do when fresh !

[Deleted]

his is a nice example of the legs being set, it is a specimen of Pabulatrix pabulatricula, extinct in Britain for almost a centuary this one dates from Sheffield 1875, as you can guess a lot of my moths are very old and historic as well as the butterflies.

[Deleted]

n old specimen of Deilephila nerii

[Deleted]

 British specimens of Minucia lunaris.

[trehopr1]

Nice photo's Dunc of that setting style of teased out legs ! I especially like the Deilephila nerii specimen. It is wonderfully symmetrical from its antennae to its wings and then it's legs. A superb job by my standards which are pretty tough. It looks fresh enough to have been caught last week (for being an old specimen). What year does it date from?
I have long admired historic specimens that are nicely set. Taking a little extra time shows the collector "cared and took pride " in his hobby and skills.

[Deleted]

I would have to check that particular nerii specimen to be 100% sure but I am 95 % that is is from 1895, a genuine British specimen that was exhibited at some show long ago.

[Deleted]

 1920's specimen of Catocala sponsa, New Forest England.

[Adam Cotton]

I think nerii is now placed in genus Daphnis.

Adam.