Key to males of Rhabdoblattella worldwide

1 Apical part of sclerite L2D cap-shaped, without spinous process (Fig. 26)....................................... 2

- Apical part of sclerite L2D irregular shape with a spinous process (Figs. 13 & 22)................................. 3

2 Abdomen sterna without spots, abdominal terga 1st–7th specialized, sclerite L3 without an outgrowth at the base of curved part (Figs. 11–12 & 18)........................................................... Rhabdoblattella disparis sp. n.

- Abdomen sterna with dark dots, abdominal terga 1st–7th unspecialized, sclerite L3 with an outgrowth at the base of curved part......................................................................................... R. delicata

3 R3 of right phallomere strongly sclerotized (Figs.13, 24 & 28).................................................4

- R3 of right phallomere unsclerotized and scarcely visible........................................ R. cambodiensis

4 Apical part of sclerite L2D with a spinous process on the side (Figs. 13 & 22)..................................... 5

- Apical part of sclerite L2D with a spinous process near the middle.................................. R. vietnamensis

5 One third of median vein from base with dark spots, at the base of the anal vein without dark macula, pronotum posterior mar- gin without semicircular blotch (Fig. 1)........................................ Rhabdoblattella hainanensis sp. n.

- One third of median vein from base without dark spots, at the base of the anal vein with a dark macula near the dark semicircu- lar blotch on the posterior margin of pronotum (Fig. 3)........................................... .. R. annamensis