Damselfly Sri Lanka

Gestart door DJHiker, augustus 10, 2014, 21:31:49 PM

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DJHiker

I would like to know which species this is
It concerns this sighting
http://observado.org/waarneming/view/84991851
identification uncertain Unidentified Damselfly - Zygoptera spec. observed at 2013-01-15 Sri Lanka - Mahiyanganaya
Photos:


thanks in advance David Kohl
David Kohl

DJHiker

David Kohl

Weia

I do not know anything about fauna overthere, I can only browse through a picture gallery. Nothing resembles completely, maybe colours of young and mature animals differ. Something like Pseudagrion rubriceps ceylanicum?? http://www.asia-dragonfly.net/globalResults.php?Species=421
Groeten, Weia
rode bosmieren: https://forum.waarneming.nl/index.php/topic,342651.0.html
pagina over variatie bij een paar lastige libellensoorten: www.at-a-lanta.nl/weia/LibellenVariatie.html
motmugjes van foto determineren: http://www.at-a-lanta.nl/weia/Motmuggen.html
familie motmuggen systematisch http://forum.waarneming.nl/smf/index.php?topic=378882.0

DJHiker

You might be right with Pseudagrion rubriceps ceylanicum (or ceylanica), but the coloration seems somewhat different.
On the internet, there are only few images around of this species and I haven't been able to find one with such a uniform orange color of head and thorax as in my specimen.
But maybe all-orange is how they start their adult life or it's simply within limits of normal color variation for this species. I guess only an Asian damsel-expert will be able to tell.

I also briefly checked the images of all Zygoptera species reported in Sri Lanka and couldn't find one that presented a better match. So, until proven differently, I think I will identify it as an uncertain P. rubriceps ceylanicum.
I very much appreciate your help.
Regards,
David

P.S. I see that first I'll have to request for the – ceylanicum to be added because it is not yet included in the database
David Kohl

ria.vogels

Dear David,

My friend and I visited Sri Lanka last autumn. We saw many dragonflies there, but not this one (funny, for it appears to be rather common). Even so, based on the reference material that I have, I agree with Weia, I am quite sure it is a young male Sri Lanka Orange-faced Sprite (Pseudagrion rubriceps ceylanicum). On your picture a greenish hue is already showing through the orange thorax.
Look on the internet (Pensoft publications) for the free download  of DRAGONFLY FAUNA OF SRI LANKA: distribution and biology, with threat status of its endemics, by Matjaz Bedjanic, Karen Conniff, Nancy van der Poorten & Ali Šalamun (2014). You will find an example of Pseudagrion rubriceps ceylanicum right on the cover of the publication!
Groet, Ria Vogels

DJHiker

Citaat van: ria.vogels op augustus 23, 2014, 13:20:16 PM
Look on the internet (Pensoft publications) for the free download  of DRAGONFLY FAUNA OF SRI LANKA: distribution and biology, with threat status of its endemics, by Matjaz Bedjanic, Karen Conniff, Nancy van der Poorten & Ali Šalamun (2014). You will find an example of Pseudagrion rubriceps ceylanicum right on the cover of the publication!

Yes, I had seen this photo already. It is one of the few images of Pseudagrion rubriceps ceylanicum that I could find on the web. But like the others it's an adult with the specific adult coloration. Photo's of a young one I have not been able to find.
However, with you supporting Weia's initial ID, I am now totally convinced, even more so because of the absense of alternative options.
Thank you all for your help.
David
David Kohl