However, the mouthparts used for getting blood are shorter than in today's female mosquitoes.

然而，用来吸血比如今雌性蚊子要短。

Scientists believe that insect hematophagy evolved from piercing-sucking mouthparts used to extract plant fluids but have difficulty studying this evolution due to the lack of insect fossil records.

科学家们认为，昆虫噬血性是由用于汲取植物液体刺吸式进化而来，但由于缺乏昆虫化石记录，很难研究这种进化。

There are nearly a million known insect species in the world, but most have one of just five common types of mouthparts.

世界上已知昆虫物种有着数以百万种，然而多数昆虫都离不开五种最普遍。

He's attached himself and his mouthparts have receded and merged into her, and their blood systems are now fused.

他依附在雌性安康鱼身上，已退化融入雌性身体，血液系统也与雌性融合到一起。

Early exoskeletons got fancier and we began to see animals with crushing mouthparts, pinchers, and full suits of armor.

早期外骨骼变得更加华丽，我们开始看到动物长出破坏性、钳子和全套盔甲。

They either cleaned the wound using their mouthparts or amputated the limb, or leg, by biting it off.

它们要么用清理伤，要么通过咬掉肢体或腿来截肢。

To researchers' surprise, the male mosquitoes had long mouthparts seen now only in females.

令研究人员惊讶是，这两只雄性蚊子很长，现在只有雌性蚊子才有长。

The features of an insect's mouthparts can help identify which order it belongs to, while also providing clues about how it evolved and what it feeds on.

而昆虫特帮助我们定义它属于哪一个目，同时也告诉我们它如何进化以及它食物来源。

You can find this mouthpart on ants from the Hymenoptera order, grasshoppers and crickets of the Orthoptera order, dragonflies of the Odonata order, and beetles of the Coleoptera order.

这样你可以在膜翅目蚂蚁，直翅目蚱蜢，蜻蜓目蜻蜓，和鞘翅目甲虫身上找到。

They think that the mouthparts that were developed for getting blood meals were originally used to pierce plants to get nutritious fluids.

他们认为，为吸血而进化而来最初是用来刺穿植物以获取营养液体。

The chewing mouthpart is the most common.

咀嚼式是最常见一种类型。

Biting flies within Diptera, like mosquitoes, horse flies, and deer flies, have a piercing-sucking mouthpart instead of the sponging mouthpart.

双翅目中会叮咬昆虫，例如蚊子、马蝇、鹿虻、是有着刺吸式而非舔吸式。

Insects in the Hemiptera order have piercing-sucking mouthparts and include bed bugs, cicadas, aphids, and leafhoppers.

半翅类昆虫具有这样刺吸式，其中包括臭虫、蝉、蚜虫、叶蝉。

It's also the most primitive — all other mouthparts are thought to have started out looking like this one before evolving into something different.

这也是最为原始一种类型——其它所有都被认为是从这一种模样进化而来。

They’re a motley crew, independently evolving similar mouthparts at least four times over the eons.

他们是一群杂牌军，在漫长岁月里至少独立演化出四次相似。

And while it's hard to catch an insect in the act of pollinating, the fossil record gives us several lines of indirect evidence of pollination, like specialized plant structures, specialized insect mouthparts, and pollen grains.

虽然很难捕捉到昆虫正在授粉瞬间，但化石记录为我们提供几种间接证据，比如特化植物结构、特化昆虫以及花粉粒。

It’s also the most primitive— all other mouthparts are thought to have started out looking like this one before evolving into something different.

它也是最原始——所有其他都被认为在进化成不同东西之前开始看起来像这个。

The piercing-sucking mouthpart consists of a long, tube-like structure called a beak.

第二种是刺吸式，由一支叫做喙长管组成。

Now, these beetles didn’t have long, tubular mouthparts.

现在，这些甲虫没有长而管状 。

The first thing she does after hatching is stick her mouthparts into her host cactus and start feeding.

她孵化后第一件事是把插入寄主仙人掌开始进食。