Synotaxidae Simon, 1894

Synotaxeae Simon 1894: 494 (type genus Synotaxus Simon 1894).

Synotaxidae, Forster et al., 1990 .

Synotaxidae, Dimitrov et al., 2017: 241 . Relimited to include only Synotaxus .

Remarks: Herein we expand the boundaries of the family on the base of the results of our molecular analysis. Consequently, we include in Synotaxidae the genera Gaucelmus, Hamus, Nescina, Synotaxus, and Tekellina .

Revised diagnosis: Synotaxidae is similar to Physoglenidae by having an integral conductor and a depressed area on the retrolateral margin of the cymbium, but such depression is wide in Synotaxidae (Figs. 9D and 12C, Ballarin and Li 2015: Figs. 1D, 3D), and a narrow furrow in Physoglenidae . Physoglenids can be further distinguished by having a dorsally excavated paracymbium (Fig. 12E, Forster et al., 1990:

Figs. 62, 155, 161, 301, 338). Some Synotaxidae are similar to Nesticidae by having a projected paracymbium, but nesticids can be distinguished by the more complex paracymbium with several projections extending forward.