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Johan van 't Bosch | profile | all galleries >> Johan van 't Bosch nature and culture galleries >> Brazil galleries >> Dragons and damsels in Cristalino >> Pseudostigmatidae >> Mecistogaster ornata tree view | thumbnails | slideshow

Mecistogaster ornata

and probables

The only thing I can make of the male in the first series is a young Mecistogaster ornata. But I don't know. Should be possible to identify.
I will start adding details of thorax, wingtip and 'tail' for the mecistogasters. I think it would be helpful to compare coloration of thorax and the last segments.
Mecistogaster ornata male
Mecistogaster ornata male		 Mecistogaster ornata thorax
Mecistogaster ornata thorax		 Mecistogaster ornata wingtip
Mecistogaster ornata wingtip		 Mecistogaster ornata last segments
Mecistogaster ornata last segments
Mecistogaster ornata male
Mecistogaster ornata male		 Mecistogaster ornata thorax
Mecistogaster ornata thorax		 Mecistogaster ornata wing
Mecistogaster ornata wing		 Mecistogaster ornata abdomen
Mecistogaster ornata abdomen
Mecistogaster ornata female
Mecistogaster ornata female		 mecistogaster ornata thorax
mecistogaster ornata thorax		 mecistogaster ornata wingtip
mecistogaster ornata wingtip		 mecistogaster ornata last segments
mecistogaster ornata last segments
Mecistogaster ornata female
Mecistogaster ornata female		 Mecistogaster ornata male
Mecistogaster ornata male

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Tom Schultz 29-Dec-2010 21:18
Johan,

Very nice photos. I study coloration in pseudostigmatids, and your photos show a really interesting phenomenon. The male at upper left is immature or at least pre-reproductive. After a few weeks the ventral tip of the hindwing blackens, like in your last photo in the series. Many female odonata show a color change as they become reproductive, but no one knows why this should happen in these male pseudostigmatids.
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