Flagger Content Author Content Reason Flag Created Resolved by Resolution
thebeachcomber Torpedo Bug (Siphanta acuta)

creation of S. acuta complex

Feb. 14, 2023 03:28:49 +0000 thebeachcomber

resolved

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Currently, Siphanta acuta has a lot of Australian observations, almost 800 (it was almost 1000 yesterday before I re'IDed a lot of obvious errors). Now many of these probably are genuinely S. acuta simply by virtue of it being one of the more common and widely distributed Siphanta in Australia, however, in almost all cases a species ID is simply not possible from the typical pics/observations uploaded to iNat. There are 40 described Siphanta in Australia, many of them very similar looking, and in fact S. acuta falls into a complex of 5 species that are "somewhat variable in size, shape of tegmen and, to some extent, colour and can only be differentiated by examination of the male genitalia" (see https://idtools.dpi.nsw.gov.au/keys/fulgor/flatid/siphanta/siph06.htm?fbclid=IwAR30q7m2dW1qoALg_2qsB0TwBJl6MbQ7cbgGUr_pCr77SSZQxviLOrQX76c)

So my proposition is that we create an S. acuta complex and populate it with the 5 species:

acuta
hebes
angularis
eberhardi
tropica

we then do an atlased swap where only Australian observations of S. acuta get moved to the complex, as currently only S. acuta s.s. is known to be introduced overseas

@matthew_connors @dustaway @nomolosx @nicklambert @reiner
tagging some of the usual suspects, if everyone is ok with this, I'll do this today/tomorrow

Posted by thebeachcomber about 1 year ago

Definitely agree with this proposal. Also of note is that there's no indication that S. acuta is actually the most common Siphanta, at least not in Australia. This site says the following, about S. hebes:

"This species is very similar to S. acuta in appearance and distribution and is also very common."

Posted by matthew_connors about 1 year ago

I agree with this too. I started looking at ID'ing these a couple of weeks ago but noticed to much variability and inconsistency that I quickly gave up.

Posted by reiner about 1 year ago

I agree, seems like a great solution to a persistent issue.

Posted by nomolosx about 1 year ago

Nice one

Posted by nicklambert about 1 year ago

cool, I assume Nicholas is on board, so I'll go ahead with this now

Posted by thebeachcomber about 1 year ago

Sounds good. There are also a couple of sightings of S. eberhardi and S. hebes that should be reverted back too

Posted by matthew_connors about 1 year ago

hmm the problem is that you can only atlas species, not any higher ranks. So I can't atlas the complex to only be in Australia

Posted by thebeachcomber about 1 year ago

not sure how spurious this is, but my potential solution is create a bogus species ('Siphanta X'), atlas it for Australia, swap the Siphanta into it, then directly edit its rank and name back to the complex

Posted by thebeachcomber about 1 year ago

@loarie how would you resolve this

Posted by thebeachcomber about 1 year ago

What if you atlased S. acuta for everywhere, atlased S. hebes (or another one) for just Australia, and then split S. acuta into S. hebes and S. acuta? If you made the complex taxon beforehand then they should all revert back to complex

Posted by matthew_connors about 1 year ago

Actually wait, I think I came across this issue previously. You can atlas higher ranks I'm pretty sure, but there's no link to it so you have to input the URL manually

Posted by matthew_connors about 1 year ago

yeah you're right, will do it now

Posted by thebeachcomber about 1 year ago

ok I've atlased it, but the mechanics of this swap is still confusing me, I've never done one like this before.

how would you set it up?

Posted by thebeachcomber about 1 year ago

There's no such thing as an atlased swap, atlases are only used in splits

you could split
Siphanta acuta
into
Siphanta angularis
Siphanta eberhardi
Siphanta hebes
Siphanta tropica

and if you had atlases for all the outputs you could control which IDs of Siphanta acuta got rolled back to the compex ancestor and which ones stayed as Siphanta acuta or went to one of the other outputs
would that do what you want?

Posted by loarie about 1 year ago

That's how I would do it as well

Posted by matthew_connors about 1 year ago

thanks that makes sense. Just to clarify also, do I need to atlas S. acuta too, ie the input? Or only the 4 output taxa?

current draft: https://www.inaturalist.org/taxon_changes/122540

Posted by thebeachcomber about 1 year ago

you need to add Siphanta acuta 116658 as an output and also give it an atlas
then click 'Analyze IDs' on https://www.inaturalist.org/taxon_changes/122540 and you'll see what will happen to the IDs when you commit the split

Posted by loarie about 1 year ago

cool, thanks Scott. I don't do enough of these changes that aren't just a basic 1 to 1.

I'll atlas S. acuta, will do some digging to see exactly where it's been introduced to

Posted by thebeachcomber about 1 year ago

all done

Posted by thebeachcomber about 1 year ago

hmm this is very annoying. Two days ago, I went through all the observations of nymphs and egg masses ID'ed as S. acuta and moved them back to Flatidae. But now after this swap, the new IDs have taken precedence, making all my IDs a waste of time

see eg https://www.inaturalist.org/observations/148478204

a lot of them probably do fall within the complex, but there are definitely also ones where it's not possible to differentiate the pics from other flatid genera like eg Colgar, hence why I coarsened them in the first place

Posted by thebeachcomber about 1 year ago

Wow, looks like this is now complete! What a great effort. It would be really great if some comment can be added to the species pages so that gumbies like me have a chance of making a correct ID, or understanding why our id was changed and suddenly looks weird when it looked great initially.

Posted by eyeo 21 days ago

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