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Sexual Dimorphism

Sexual Dimorphism
Photo Information
Copyright: Ricardo A Palonsky (RAP) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2524 W: 345 N: 2373] (7405)
Genre: Animals
Medium: Color
Date Taken: 2004-09
Categories: Insects
Camera: Canon Powershot Pro1
Exposure: f/4, 1/320 seconds
Photo Version: Original Version
Theme(s): Odonata: Dragonflies and Damselflies, My personal Dragons and Damselfies [view contributor(s)]
Date Submitted: 2004-11-07 6:09
Viewed: 7085
Points: 30
[Note Guidelines] Photographer's Note

Sexual Dimorphism

A new image of these damselflies of the Ischnura genre of which they can see previous presentations of the Female HERE and HERE (including a version LP) and of Male HERE.

In the comparative one some of the differences between both sexes can be appraised, as much in physical aspects as in their coloration.

These specimens have 40mm. approx. of length.

In these days I have for the first time had possibilities of seeing them copulate, although without the luck of being able to capture images of them.

They can find greater information of the Ischnura sort in my previous presentations or this LINK.

Luc, marhowie, Callie, willie, Signal-Womb, PDP, gerhardt, AndyB, livios, Harm-digitaal, Ken52 has marked this note useful
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ThreadThread Starter Messages Updated
To Arjuna: jajaja...RAP 1 11-08 14:06
To elihesam: :)))RAP 1 11-08 14:03
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Critiques [Translate]

Great shots Ricardo.
No "monster" this time.;-)
Both are very good , great sharpness and very nice colours and composition.
Excellent work.

tres bonne presentation ;)
la qualité photographique est pas negligée puisque les couleurs sont superbes et la pdc est bonne.
tu as de la chance d'avoir encore des insectes chez toi ;) ( en region parisienne c'est desert, il n'y a plus que des limaces :s )

  • Great 
  • Luc Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1836 W: 303 N: 4300] (14767)
  • [2004-11-07 6:36]
  • [+]

I appreciate much your course of entomology 101, Ricardo. Very interesting and exhausting note.
Beautifull damselflies.

Ricardo, Great comparative presentation of the sexes seen with great detail. It enables the viewer to not only observe the coloration differences but anatomical differences as well. Well done!

  • Great 
  • urban Gold Star Critiquer/Gold Note Writer [C: 71 W: 4 N: 79] (413)
  • [2004-11-07 8:59]

nteresting to see the difference, not only in color but in body shape as well. Interesting picture.

  • Great 
  • Callie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1102 W: 95 N: 2611] (7555)
  • [2004-11-07 10:17]

Now this is a very nice way of showing it to us, Ricardo. I like it a lot! Beautiful colours on both. Love touse beady eyes!

  • Great 
  • willie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1023 W: 61 N: 648] (2083)
  • [2004-11-07 10:19]

Good compo. Very crisp and sharp.
Good work, well done

Good pairing Ricardo. Great to see the differences between male and female. Excellent compo in both cases and extremely sharp images. Nice job done here.

  • Great 
  • PDP Gold Star Critiquer/Gold Star Workshop Editor [C: 2821 W: 344 N: 3779] (11769)
  • [2004-11-07 12:31]

Good shot Ricardo, although I think it is worth mentioning that the female of the species you give a link to has many different colourations. Very good work, the two pictures are both very nicely done, thanks for sharing.

Well done!
and Thanks a lot for this work,...
which words I could be use for it?!...let me see more,Friend:)


Fantastic post. Showing the difference in such clarity. Lovely pair of photos. Really like this a lot

  • Great 
  • AndyB Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1366 W: 32 N: 1351] (3982)
  • [2004-11-07 16:32]

A nice pair of shots showing the difference of the sexes.
Good composition, colours and detail.
Very well presented and an interesting note.
Good work,well done.

Ricardo, como sempre, excelente(s) foto(s). Gosto muito da composição em ambas, assim como gosto dos detalhes e cores.


Two very good captures and good for comparison between the sexes. I'd still recommend a slightly higher F-stop, though. I've seen the male variety here, too, but the brown female form I've never seen around here - although I think it should be around.
If you've seen some mating near a waterhole, then it might be a good idea to go back to the same waterhole early in the morning a few times, you might be lucky and see some from last year emerging which is quite an experience ;-))

  • Great 
  • japie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1814 W: 100 N: 1904] (5187)
  • [2004-11-08 8:48]

Very informative set! Both images are clear and sharp. I like this post a lot.

Thanks for posting

That's nice, to see the difference in one picture, nice idea, and the insects are nice in colour and sharpness!

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