Genus Spinaethorax Papáč & Palacios-Vargas, 2016

Figs 1–8, 9A, D; Table 1

Revised diagnosis

Eyes and post-antennal organ absent. Secondary granulation made of fine grains; dermastra missing; integumentary channels absent. Anterior process of labrum absent or very weak. Ant. III and IV fused; S-chaeta S1 short and wide; S-chaeta S5 present; two apical sensory rod-like chaetae (a, sa). Basomedian fields of labium with 4 + 4 chaetae; basolateral fields of labium with 3 + 3 chaetae. Oral fold with enlarged lateral chaeta. Sensory fields well-developed with swollen inner chaetae; sf6 with three guard chaetae. Trunk with 4 + 4 s-chaetae (s1, s2, s3, s3’). Abd. IV sternum with 1 + 1 neosminthuroid chaetae. Distal articular process of manubrium with convex tip. Dens without median articular process. Unguis with basal narrowing; with well developed lamella Bp; lamella la missing on unguis II. Tenaculum with 3 + 3 teeth.

Keys or tables for determination of the genera of Neelidae are available in Papáč & Palacios-Vargas (2016) and Schneider (2017).