Songhaicinae, Sánchez-García & Engel, 2016

Wynne, J. Judson, 2017, Disparrhopalites naasaveqw n. sp. from caves at Wupatki National Monument, Arizona, synonymy of Dietersminthurus Palacios-Vargas, Cuéllar & Vázquez, 1998 with Disparrhopalites Stach, 1956 and composition of Songhaicinae (Collembola: Sminthuridae), Zootaxa 4319 (1), pp. 77-90 : 86

Key to sminthurid genera with spine-like tunica and/or ungual cavity ( Songhaicinae )

1. Neosminthuroid setae present; unguis without free tunica; anterior surface of dens with five setae........................................................................................ Songhaica Lasebikan, Betsch & Dallai, 1980

- Neosminthuroid setae absent; unguis with or without spine-like tunica; anterior surface of dens with seven or more setae... 2

2. Bothriotrix D short, stiff, spine-like; tenaculum with 2+2 setae....................... Soqotrasminthurus Bretfeld, 2005

- Bothriotrix D long, slender and flexible; tenaculum with 2 or 3 setae............................................. 3

3. Tunica free apically as thin to thick spine; anterior face of dens with eight or more setae............................. 4

- Tunica broad, appressed to ungual body; anterior surface of dens with seven setae........................................................................................ Varelasminthurus Da Silva, Palacios-Vargas & Bellini, 2015

4. Anterior surface of dens with 8 or 9 setae; free part of tunica thin, elongated, needle-like...... Disparrhopalites Stach, 1956

- Anterior surface of dens with 11‒13 setae; free part of tunica short, thick......................... Gisinurus Dallai, 1970