Pseudanurophorus barathrum sp. nov. 1 appearance of dark coloured specimen 2 labrum, maxillary outer lobe and hypostomal setae, lateral view 3 labrum and maxillary outer lobe, fronto-ventral and ventral views 4 labium, ventral view 5 maxillary head. Abbreviations: A, B, C, D, E-papillae of labial palp, H, h1, h2–hypostomal setae, mo, m1, m2, p1, p2, p3–setae of m – and p-row of labrum, mx.ol-maxillary outer lobe, cap., 1–6–capitulum and lamellae 1–6 of maxillary head, a1, b1, b2, b3, b4, e7–labial guards, l.p.–lateral processes. Characters of greater value encircled.