KEY TO MALES OF AUSTRALIAN SPECIES OF Agapetus

1. Cerci in lateral view slender, elongate, with length more than 6 times height (Figs 2, 13 b, 14b, 15b, 17b, 18) ... 2

-. Cerci in lateral view stout, generally club-shaped, length less than 5 times height (Figs 3, 4 b, 5b, 6b, 7b, 8b, 9b, 10b, 11, 12b, 16b, 20b) .......................................................................................................................................... 8

2(1). Gonopods in lateral view subquadrate (Figs 15 b, 18)........................................................................................... 3

-. Gonopods in lateral view longer than tall (Figs 2, 13 b, 14b, 17b)......................................................................... 4

3(2). Segment X having dorsal and apical margins each with sclerotised band, in lateral view rounded apically (Fig. 18); gonopods each with single small spine or spur apically, visible in lateral view (Fig. 18)................................ ............................................................................................................................................... A. mittamitta sp. nov.

-. Segment X entirely membranous, in lateral view projected distad, apically acute (Fig. 15 b); gonopods in ventral view each with pair of apicomesal spurs (Fig. 15 a) ..................................................................... A. zwicki sp. nov.

4(2). Segment X entirely membranous, in lateral view produced distad to about 2X length of gonopods, apically acute (Fig. 14 b); gonopods in ventral view each clearly bearing pair of sclerotised spurs apicomesally (Fig. 14 a) ........ ...................... ......................................................................................................................... A. dundungra sp. nov.

-. Segment X at least partly sclerotised, in lateral view shorter than, equal to, or only slightly longer than gonopods, irregularly rounded (Figs 2, 17 b), truncate (see Neboiss 1986: 56), or tapered and apically acute (Fig. 13 b); gonopods in ventral view each with only a single apical spur visible, or no apical spur visible (Figs 13 a, 17a) .. 5

5(4). Gonopods in ventral view each with pair of spurs on mesal margin, one at apex and second at about 2/3 from