See text Rhopalosomatidae is a family of Hymenoptera containing about 68 extant species in four genera that are found worldwide.

They are solitary, and the larvae are ectoparasitic on orthopteran nymphs.

The hindwing (when present) has distinct claval and jugal lobes.

are found from the southern US to Central and South America, with one species, L. trichopleurum, known from the Philippines and Indonesia.

[7] The family has four extant and two extinct genera:[8][9][10] The extinct genera †Mesorhopalosoma Darling, 1990 and †Paleorhopalosoma Nel, Azar & Hervet, 2010 have been moved to the separate family Angarosphecidae.