This amorous jumping spider is romancing his potential mate, but why bother dressing in flamboyant red, if your intended is supposedly color blind.
这只含情脉脉的跳蛛正在向它这位潜在的配偶求爱。但如果这个潜在的配偶是个色盲，它为什么还要穿得那么鲜艳呢？
New research reveals some spiders have a set of rose colored lenses that let them see their suitors in a different light.
最新研究发现一些蜘蛛眼睛里有一套玫瑰色晶状体，这种晶状体可以使它们在不同的光线下看到它们的追求者。
Most spiders don't have very good eyesight， let alone color vision. But some types like these brightly colored dancing Habronattus spiders see quite well。“And not surprisingly those are the groups of spiders that hunt for a living instead of capturing things in webs. ”
Nathan Morehouse, University of Cincinnati.
大部分蜘蛛视力不好，而识别颜色的能力更差。但是一些像Habronattus这种外形鲜艳的跳蛛的视力却很好。辛辛那提大学的Nathan Morehouse说：“正如我们所料，这些视力好的跳蛛是以捕猎为生，而不是通过织网捕食。”
But good vision doesn't mean color vision.
Like most spiders, Habronattus spiders have only two types of color receptors in their eyes―green and ultraviolet.
但是视力好不代表识别颜色的能力也好。跟大部分蜘蛛一样，Habronattus跳蛛的眼睛里也只有2种颜色感受器――绿光和紫外光感受器

Scientists didn't think they could distinguish other shades. Morehouse and his colleagues discovered Habronattus spiders have a tiny red lens that sits over some of the green receptors in their retina.
科学家认为这些蜘蛛不能识别除了这两个颜色外的颜色.Morehouse和他同事发现Habronattus跳蛛视网膜的一部分绿光感受器上被一个很小的红色晶状体覆盖。
Those lenses act like rose colored glasses.
They filter the light， so those cells only ever receive red light giving H the ability to distinguish reds， oranges and yellows from green and it means that exhibited vivid colors during the mating dance isn't wasted on its audience.
这些晶状体就像是个玫红色眼镜，它们可以过滤一些有色光，使眼细胞只能接收红色光，进而使Habronattus跳蛛可以从绿色中区别出红色，橙色和黄色。另外这一生理结构也使得跳蛛的鲜艳外表在求爱过程中得到了很好的利用。
Scientists still don't know why these spiders evolved this super vision.
It might make prey easier to spot among the vines and sands of their habitat or help spiders avoid poisonous morsels.
科学家还不知道跳蛛进化出这一超强视力的原因。这一生理特点可能使跳蛛更容易在它们栖息地的蔓藤和沙子中发现猎物，或者能帮助跳蛛避免误食有毒的食物。
And why the males put on such a song and dance routine is another question. Are they proving superior genetic quality or are they hypnotizing the female so she doesn't strike.
但是为什么雄性跳蛛会有唱歌🎤跳舞的日常则是另一个问题了。它们是在炫耀自己的优良基因还是在催眠雌性跳蛛以防她们罢工？
For spiders, the dating game has high stakes. Some spiders are cannibals，and with the wrong move this male might end up a snack.
对蜘蛛来说，求偶游戏的危险系数很高。一些蜘蛛会吃同类，万一行差踏错雄性跳蛛就会变成别人的伙食。
“And so these males are really dancing for their lives. There's a real premium on them getting this right. ”
"所以这些雄性跳蛛真的是在拿生命在起舞，足以看出他们对这项技能的重视"
This hapless spider failed to impress.
But since he avoided being a romantic dinner
perhaps he got off easy.
这只跳蛛运气不好，没能得到对方的青睐。但是因为它在避免成为晚餐，可能它会安全脱身。