纵脉
- 网络Longitudinal vein
纵脉-
翅不具有横脉，前缘三条纵脉明显发达。
Wing has no horizontal arteries veins , three costa veins developed significantly .
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现存蜉蝣翅基纵脉走向及愈合模式（昆虫纲：蜉蝣目）（英文）
The bracing and fusing pattern of longitudinal veins at base in living mayflies ( Insecta : Ephemeroptera )
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有翅昆虫翅基纵脉的走向及愈合模式在系统发育重建中占有重要地位。
The bracing and merging pattern of basal longitudinal veins plays an important role in phylogeny reconstruction within Pterygota .
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亚前缘脉弓的作用相信是加强了因翅基骨板发达而相互远离的纵脉间的连结作用。
The hypothesized function of subcostal brace in mayflies is to strengthen the connection between distantly separated longitudinal veins because of sclerite plate at radius vein base .