Key to known males of Palaearctic species of Reikosiella (Hirticauda)

1 Uncus much longer than half-length of stigmal vein and extending almost to postmarginal vein (Fig. 42).......................................................................................... R. rostrata (Ruschka) comb. nov.

- Uncus shorter than above.............................................................................. 2

2(1) Flagellomeres with vertices of unusually long setae directed dorsally and laterally, and gradually decreasing in length toward last segment of clava, the setae on F2 and F3 as long as length of F2–F4 combined (Fig. 27). Specimen small (0.7–1 mm)....................................................................................... R. koreana sp. nov.

- Flagellomeres with uniformly distributed, semierect setae, the longest setae at most 2× flagellomere width. Specimen larger than above......................................................................................... 3

3(2) Tegula, fore leg except coxa and apical tarsomere, and mid tibia and three basal tarsomeres pale whitish-yellow (Fig. 30); vertex and occiput without conspicuous black setae; funicle with segments subequal in length and only slightly longer than wide.................................................................................. R. vanharteni sp. nov.

- Tegula dark and legs with extensive brown regions (Fig. 22); vertex and occiput with numerous black, short, erect setae; funicle with F2 conspicuously elongate and following flagellomeres all clearly longer than wide though gradually decreasing... 4

4(3) Europe............................................................................ R. hungarica (Erd õ s)

- Far East (Korea)................................................................... R. tripotinorum sp. nov.