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New paper - Graphium septentrionicolus
Posted: Tue Jun 14, 2022 9:14 am
by adamcotton
This was published today:
Cotton, A.M., Doleck, T., Zhang, X., Inayoshi, Y., Lohman, D.J. & Hu, S-J. 2022.
Graphium septentrionicolus Page & Treadaway, 2013 (Lepidoptera: Papilionidae) is a distinct species.
Zootaxa 5154 (2): 211–224.
Abstract
After molecular and morphological analyses, the taxon
septentrionicolus Page & Treadaway, 2013 is shown to be a distinct
species, and
Graphium adonarensis (Rothschild, 1896) is placed as conspecific with
Graphium sarpedon (Linnaeus,
1758).
Graphium huangshanensis Wu & Ma, 2016
syn. nov. is synonymised with
G. septentrionicolus.
The paper can be downloaded (open access) here:
https://mapress.com/zt/article/view/zoo ... .2.6/47693
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Wed Jun 15, 2022 4:41 pm
by adamcotton
I thought it would be worth mentioning that if anyone has specimens of '
Graphium sarpedon' from S Tibet, particularly Motuo County from where Chinese sellers sometimes have specimens for sale, these are likely to be
Graphium septentrionicolus.
Here are some sample specimen photos
Spring generation:
Summer generation:
Note that I originally thought the summer specimen was
Graphium sarpedon, hence the name on the label. It was only when we analysed the DNA of this that we realised they were actually
Graphium septentrionicolus, the summer form of which is much larger than
G. sarpedon.
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Wed Jun 15, 2022 4:49 pm
by adamcotton
Note the long hairs at the base of the hindwing anal fold of
Graphium septentrionicolus are cream coloured rather than the pure white of
G. sarpedon.
Here is a specimen of
G. sarpedon for comparison:
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Wed Jun 15, 2022 6:30 pm
by Chuck
Interesting. Thanks Adam.
Re: New paper - Graphium septentrionicolus
Posted: Fri Jun 17, 2022 3:09 am
by mokky
Thank you Adam for your new work. I am very much interested in Himalaya butterfly fauna. This new discovery is amazing. I always take it for granted that Graphium sarpedon is one stable species although it shows great individual/seasonal variations. It must be interesting to compare early stages of this sarpedon-complex.
Re: New paper - Graphium septentrionicolus
Posted: Fri Jun 17, 2022 9:13 am
by adamcotton
Graphium sarpedon is a complex of mainly allopatric species ranging from Pakistan to Japan and through SE Asia to the Solomon Is and Australia. There are only two instances of overlap between two species known so far,
G. sarpedon and
septentrionicolus in mainland Asia and
G. milon and
monticolus in Sulawesi.
As you can see from the attached tree from the paper,
G. sarpedon and
septentrionicolus are not actually very closely related and
septentrionicolus diverged much earlier from the ancestor of most of the
sarpedon complex. I should mention that this paper concentrates only on the relationship between
G. sarpedon,
septentrionicolus and
adonarensis. Several other species are included in the tree in order to confirm the relationships of these taxa, and a future study will examine the whole complex.
FIGURE 1. A phylogenetic tree of the
Graphium sarpedon species complex reconstructed with BEAST showing that
Graphium
septentrionicolus is not closely related to
G. sarpedon. Branch support for this BEAST chronogram is indicated with bullseyes
at each important node. Bayesian inference posterior probability support values are indicated with a ring of colour surrounding a
circle that indicates maximum likelihood ultrafast bootstrap support. See graphic in upper left corner for explanation of support
values associated with each colour. Tip labels indicate species and subspecies (if applicable), collection locality formatted as
two-letter ISO country codes with island or province (if applicable), followed by specimen ID. An asterisk indicates taxa placed
in
Graphium adonarensis by Page & Treadaway (2013).
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Fri Jun 17, 2022 9:17 am
by adamcotton
mokky wrote: ↑Fri Jun 17, 2022 3:09 am
It must be interesting to compare early stages of this sarpedon-complex.
Indeed, but at this time the early stages of
G. septentrionicolus are unknown. Presumably the species feeds on species of Lauraceae.
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Fri Jun 17, 2022 10:39 am
by Chuck
I just gotta ask- Adam, how accurately could you reproduce that phylogenic tree from memory? Don’t be humbly vague, tell the truth.
Re: New paper - Graphium septentrionicolus
Posted: Fri Jun 17, 2022 1:48 pm
by adamcotton
Not precisely, particularly the middle bit. I certainly wouldn't remember how the various subspecies branch from each other, either in sarpedon or the various species in the middle.
Adam.
Re: New paper - Graphium septentrionicolus
Posted: Sat Jun 18, 2022 8:54 pm
by laurie2
Fantastic work and paper thanks Adam! As always!
Re: New paper - Graphium septentrionicolus
Posted: Sat Jun 18, 2022 9:42 pm
by adamcotton
Laurie,
Thank you for the comment, I am glad you like it. As you can see it was an international collaboration mainly just to confirm that one taxon is a separate species. It is amazing how many new discoveries are being made from specimens right in front of our eyes, even in such well known groups as Papilionidae.
Adam.