蜻蜓vs damselfly
蜻蜓和丹麦自Leeldlies都属于:阶级的odonata:昆虫共享许多特征。尽管它们相似,但显着的区别对于将它们分为两个单独的组仍然很重要。看一下他们,确定它是蜻蜓还是雄鹿,因为它们的微小触角,大眼睛,两对带有微小静脉的翅膀和细长的腹部几乎相同。因此,重要的是要区分这些相似的昆虫。
蜻蜓
蜻蜓是3亿年前进化的掠食性昆虫,这是在开花植物发展之前。他们有大约3 - 10厘米的长身,最大的记录蜻蜓的身高将近20厘米。两对膜翅膀不相似。后翼比前翼更大,并且具有宽阔的底座。它们的翅膀在将它们识别为蜻蜓以及内部区分物种方面非常重要。蜻蜓休息时将其翅膀保持水平或向下。此外,翅膀的范围特定于蜻蜓中的每个物种。但是,他们有顽固的腹部矮胖的身体。大眼睛彼此非常近,几乎在头部顶部接触。男性性器官是一对高级肛门附属物,称为扣子。 Male transfers the sperm into female’s accessory genitalia, and he grasps her scruff to be in tandem. This interesting and unique process concludes with the sperm transfer as the female curls her tip of abdomen. Their eggs are round and the diameter is 0.5 centimetres. Dragonfly nymphs breathe from their rectal tracheal gills, and their bodies are short and bulky. After about 15 moults, the nymph becomes an adult, which lives only about two to three weeks.
豆娘
Evolved before 300 million years, they are also living fossils. Damselflies are usually about 3 – 8 centimetres long, but there are records of more than 10 centimetre long damselflies. An interesting fact about their wings is that both pairs are similar in shape and size. Additionally, they keep their wings closed and upwards over the abdomen when they rest. Damselfly body is usually long and slender. They have eyes placed apart from each other, located on either side of the head. The males have two pairs of anal appendages to transfer sperms into females. The females have functional ovipositors. They spend some considerable time before mating; scientists believe female is assessing the male’s organs during this time before receiving a sperm from him. Damselfly eggs are cylindrical and about one centimetre long. Damselfly nymphs are long and slender and they breathe through caudal gills. Nymph becomes an adult after several moults, and the adult has a relatively shorter lifetime compared to nymph. However, in hot conditions, adults can live up to six months.
蜻蜓和Damselfly有什么区别? - 在3亿年之前,蜻蜓和坝自我都在演变,并且有化石,并且有食肉食品习惯。 - 蜻蜓稍大一些,腹部坚固且短。但是,大坝自我少,腹部又长又苗条。 - 蜻蜓保持翅膀向下或水平定位,而大坝自我使它们保持闭合并向上。 - 此外,蜻蜓中的两对翅膀是不同的,而水坝的翅膀相似。 - 眼睛位于蜻蜓中,而它们在大坝中彼此分开。 - 蜻蜓的鸡蛋是圆形的,但在damelfly中它们是圆柱形的。 - 蜻蜓的若虫较短又笨重,而大水坝的若虫则长而苗条。 - 除了这些明显的差异之外,它们的性器官和若虫的性器官在这些活化石中也有所不同。 |
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