Ischnothyreus an sp. n., female. A, C, E habitus, dorsal, lateral and ventral views B, D, F prosoma, dorsal, lateral and ventral views G, I epigastric region, ventral view H epigastric region, ventral view (cleared in lactic acid) J epigastric region, dorsal view. Abbreviations: a = apodeme; tsa = triangular shaped atrium; wt = winding tube. Scale bars: A, C, E = 0.4 mm; B, D, F = 0.2 mm; G–J = 0.1 mm.