Key to species of the genus Trichorhynchiella Fain, 1995

(females)

1. Dorsal shield present. Palpalae dF and dG thickened. Genua I and II bearing setae. Preapical segment of legs III bearing 1–2 setae.............................................................................................. 2

- Dorsal shield absent. Palpalae dF and dG not thickened. Genua I and II without setae. Preapical segment of legs III without setae............................................................................... T. paddae Fain, 1995

2. Subcapitular setae m present. Palpal setae l”G pectinate, slightly longer than dF. Vulvar fold situated in anterior third of idiosoma, almost at level of leg II insertions. Legs II with 4 articulated segments. Preapical segment of legs III bearing 1 seta, apical segments of legs III and IV bearing 14 setae each..................... T. phleocryptes Bochkov and OConnor, 2014

- Subcapitular setae m absent. Palpal setae l”G smooth, 1.4 times shorter than dF. Vulvar fold situated in median part of idiosoma, between levels of leg II and III insertions. Legs II with 5 articulated segments. Preapical segment of legs III bearing 1–2 seta, apical segments of legs III and IV bearing 7–9 setae each..................... T. myiarchus sp. nov. (Figs. 1 and 2)