female  Rhinocypha humeralis of Malaysia

29 October 2006

14 January 2007

5 November 2006

This female color similar to a male. More detail photos...

 

Male and female damselflies can be distinguished by the bump containing the accessory genitalia under the male second abdominal segment, and by the prominent ovipositor under the last abdominal segments on females.
Dragonflies are visual hunters and have impressive vision being able to see in color as well as ultraviolet light and polarized light, which enables them to see reflections of light on water.
Their large compound eyes are made up of as many as 30,000 facets or lenses (ommatidia). Those in the upper part looking forward are usually larger and more numerous that those elsewhere providing the area of best visual acuity. This is why dragonflies usually approach prey from behind and below.

INDEX : Damselfly     May 17, 2017 11:11:56 AM