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I guess these are sawflies? Anyway, it is an amazing case of
A very different looking individual. It's possible that this species is
That smaller spider is the male, and the large one the female. They are
This species exhibits gender dimorphism ...
A male (first picture) and a female of a common Israeli Papilionid species, ...
Beautiful little duck that was spotted on the Snake River. Males and females ...
Especien que presenta dimorfismo sexual, ...
! When the males and females of a species look very different, scientists call ...
streams and rivers.
Marked sexual
://www.projectnoah.org/spottings/8297350 but its colour is different. I don't ...