从上方观察甲虫时,头部通常被前胸膜所掩盖。
Evidently one, and only one, tiny leaf beetle can dance on this pin's head — the silvery circle in this 40 X photo.显然一个,并且只有一个,小小的叶甲才能在这个大头针顶——这张40倍图片上银色的圆周——上跳舞。
The scientists believe the beetle evolved such brawn because brute strength is the deciding factor in males' competition over females, which is waged as head-to-head pushing matches in dung tunnels.科学家猜想,在雄性甲虫争夺雌性的竞争中,力气大能起决定性作用,因为雌性甲虫会在粪中挖一个隧道,然后呆在里面,在粪球隧道中与对手进行头对头地顶牛比赛。