脉翅目（学名：Neuroptera）包括草蛉、蚁蛉、长角蛉等，属于完全变态的昆虫。这个目的成虫有两对膜状的的翅膀，前翅和后翅大约一样大。牠们有可供咀嚼的口器。

The insect order Neuroptera, or net-winged insects, includes the lacewings, mantidflies, antlions, and their relatives. The order contains about 6,000 species. The group was once known as Planipennia, and at that time also included alderflies, fishflies, dobsonflies, and snakeflies, but these are now generally considered to be separate orders (the Megaloptera and Raphidioptera). Sometimes the name Neuropterida is used to refer to these three orders as a group. This is either placed at superorder rank, with the Endopterygota becoming an unranked clade above it, or the Endopterygota are maintained as a superorder, with an unranked Neuropterida being a part of them. Within the endopterygotes, the closest living relatives of the neuropteridan clade are the beetles. The common name lacewings is often used for the most widely known net-winged insects – the green lacewings (Chrysopidae) – but actually most members of the Neuroptera are referred to as some sort of "lacewing".