不同的环境，对物种有不同要求，从而产生了不同的基因和不同形状的口器。
Different niches, having different requirements, result in different genes and different shaped mouthparts.
对昆虫唾液蛋白的分析表明，具有同样类型口器、食物类型接近的昆虫，唾液成分有更多的相似性。
Insect protein analyses indicated that similar salivary components were found in insects with the same types of mouth parts and similar food resources.
脉翅目脉翅目的食肉昆虫，如蚁狮或鱼蛉，有四个网状翅脉的翅膀和适于咀嚼的口器。
A carnivorous insect of the order Neuroptera, such as the ant lion or dobsonfly, having four net - veined wings and mouthparts adapted for chewing.
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