Diagnosis: Head without medial carina between antennal sockets and median ocellus. Tergum 2 of metasoma rounded above spiracle (Figs. 1–3). Subbasal cell of hind wing narrow: vein 1M 2.0–3.0 times as long as vein cu­a (Fig. 65). Radial cell of forewing usually less than 0.5 times maximum width of stigma (Figs. 50, 51, 55, 56).

For the following characters, there are numerous exceptions in tropical regions. The following applies to adults of almost all species in temperate and boreal regions of the northern hemisphere. Tergum 1 of metasoma with lateral margins not meeting ventrally (Fig. 69). Wing densely pubescent except in basal cell and surface of 1 st submarginal of most species of temperate and boreal regions (Figs. 50, 51, 53).

The occipital carina development mentioned in Shaw (1997) is variable and is not used further.

This is a large worldwide genus, but females of only a few species attack Miridae.