Allotria Westwood, 1833: 494. Type: Allotria victrix Westwood, 1833. Homonym of Allotria Hübner, 1823: 280. Synonymyzed by Hellén (1963: 8).
Xystus Hartig, 1840: 199. Type: Xystus erythrocephalus Hartig, 1840. Homonym of Xystus Schoenherr, 1826: 310. Synonymyzed by Hellén (1963: 8).
Alloxysta Förster, 1869: 338. Type: Xystus macrophadnus Hartig, 1841.
Pezophycta Förster, 1869: 338. Type: Xystus brachypterus Hartig, 1840. Synonymyzed by Hellén (1963: 8).
Nephycta Förster, 1869: 338. Type: Nephycta discreta Förster, 1869. Synonymyzed by Hellén (1963: 8).
Adelixysta Kierych, 1988: 351. Type: Adelixysta sawoniewiczi Kierych, 1988. Synonymyzed by Menke & Evenhuis (1991: 150).
Carvercharips Kovalev, 1994: 413, 414. Type: Alloxysta carinata Carver, 1992. Synonymyzed by Paretas-Martínez et al. (2007a: 161).
Head. Transversally ovate, smooth and shiny, slightly wider than high in front view. With setae below, between and above toruli. With setae on vertex and with many setae on face. Transfacial line 0.9-1.3 times height of compound eye. Malar space 0.3-0.6 times height of compound eye.
Antenna. Female: 13-segmented, filiform. All antennomeres covered with sparse setae. Male: 14-segmented, filiform. All antennomeres covered with sparse setae.
Mesosoma. Pronotum with scattered setae, with or without carinae present. Mesoscutum smooth and shiny, round in dorsal view with sparse setae. Scutellum smooth and shiny with scattered setae, not being more abundant on apex of scutellum. Propodeum with many setae, with or without carinae present.
Forewing. Longer than body, 1.4-1.8 times as long as mesosoma and metasoma together. Covered with dense pubescence; marginal setae present.
Metasoma. Anterior part with an incomplete ring of setae, glabrous at center, wider laterally. Metasoma smooth and shiny, T3 and T4 clearly distinguished.