Table 1 in A generic classification of Xenidae (Strepsiptera) based on the morphology of the female cephalothorax and male cephalotheca with a preliminary checklist of species

Table 1. Overview of Xenidae genera with general information on distribution, hosts, and the number of described species; a conservative estimate of the number of undescribed species is also provided. GenusDistributionHostsNumber of speciesNumber of undescribed speciesParagioxenos Ogloblin, 1923AustraliaParagia (Vespidae: Masarinae)10Nipponoxenos (Kifune & Maeta, 1975), stat. res.East AsiaVespula (Vespidae: Vespinae)10Tachytixenos Pierce, 1911, stat. res.Old WorldTachytes (Crabronidae: Crabroninae)14Paraxenos Saunders, 1872Old World, AustralasianBembecinus, Bembix, and Stizus (Bembicidae: Bembicinae)137Brasixenos Kogan & Oliveira, 1966, stat. res.New WorldEpiponini (Vespidae: Polistinae)77Leionotoxenos Pierce, 1909, stat. res.New WorldOdynerini (Vespidae: Eumeninae)143Eupathocera Pierce, 1908, stat. res.New WorldSphecinae, Ammophilinae (Sphecidae); Tachytes (Crabronidae: Crabroninae); Zethus (Vespidae: Zethinae); Pachodynerus (Vespidae: Eumeninae)168Macroxenos Schultze, 1925, stat. res.Australasian, IndomalayanOdynerini (Vespidae: Eumeninae)23Sphecixenos gen. nov.Old World, AustralasianSphex, Isodontia (Sphecidae: Sphecinae); Sceliphron (Sphecidae: Sceliphrinae); Chlorion (Sphecidae: Chloriontinae)121Pseudoxenos Saunders, 1872PalearcticOdynerini (Vespidae: Eumeninae)72Tuberoxenos gen. nov.Afrotropical, PalearcticAmmophila, Podalonia (Sphecidae: Ammophilinae); Prionyx (Sphecidae: Sphecinae)58Deltoxenos gen. nov.Old World, AustralasianEumenini, Odynerini (Vespidae: Eumeninae)717Xenos Rossi, 1793Old and New WorldVespini (Vespidae: Vespinae); Polistini, Mischocyttarini, Ropalidiini (Vespidae: Polistinae)3311