Phyllognathopus Mrázek,

Key to species of the genus Phyllognathopus Mrázek,

1893 based on females

1. P4 Exp two-segmented............................................................2

– P4 Exp three-segmented..........................................................6

2. P4 Enp-2 with two apical elements.......................................... .................................... Phyllognathopus inexspectatus Galassi & De Laurentiis View in CoL , in Galassi, De Laurentiis & Fiasca, 2011

– P4 Enp-2 with three apical elements......................................3

3. Free margin of anal operculum with four strong spines.......... ............................... Phyllognathopus camptoides Božic, 1965 View in CoL

– Free margin of anal operculum smooth or with small spinules ....................................................................................4

4. The second inner seta being the longest seta on P5 Exp ........ .............................. Phyllognathopus insularis Chappuis, 1940 View in CoL

– The third inner seta being the longest seta on P5 Exp..........5

5. Free margin of anal operculum smooth ................................... .......................... Phyllognathopus chappuisi Delachaux, 1924 View in CoL

– Free margin of anal operculum with (10-12) small spines...... ........................... Phyllognathopus vietnamensis , new species.

6. Free margin of anal operculum with (10-16) small spines...... .............................. Phyllognathopus paludosus Mrázek, 1893 View in CoL

– Free margin of anal operculum smooth .................................7

7. Outermost seta of P5 Exp inserted apically ............................. ............................... Phyllognathopus viguieri ( Maupas, 1892) View in CoL

– Outermost seta of P5 Exp inserted subapically .....................8

8. Caudal ramus posterolateral seta III being long, spiniform shape; P4 Exp two-segmented.................................................. ............................. Phyllognathopus volcanicus Barclay, 1969 View in CoL

– Caudal ramusi posterolateral seta III being long, pinnate shape; P4 Exp one-segmented.............................................................. ........................ Phyllognathopus paracamptoides Božic, 1968 View in CoL