Key to adult males of Diplectrona Neboiss

1 Distal portion of phallic apparatus heavily sclerotised, ventrally presenting smoothly rounded shiny dark surface (grey area in Fig. 14; Fig. 45), produced apicodorsally into pair of spines (Figs 14–15, 46)............... Diplectrona willandi sp. nov.

-. Distal portion of phallic apparatus membranous, with or without discrete sclerotised spines and/or spicules distally (e.g., Figs 3, 6, 42)............................................................................................. 2

2(1) Coxopodites of gonopods each at least 4x length of its harpago (Figs 32–33, 42–43, Neboiss 2003: fig. 22D)............ 3

-. Coxopodites of gonopods not more than 3x as long as harpagones............................................... 5

3(2) Phallic apparatus bearing complex of sclerotised rods and spines (Figs 32, 34)............. Diplectrona castanea Kimmins

-. Phallic apparatus without complex of sclerotised rods and spines, bearing clusters of spicules distally................... 4

4(3) Lobes laterally on abdominal tergites IX/X not reaching apex of tergite X (Neboiss 2003, fig. 23A)................................................................................................... Diplectrona serrula (Neboiss)

-. Lobes laterally on abdominal tergites IX/X projecting beyond apex of tergite X (Fig. 43; Neboiss 2003, fig. 22D).................................................................................. Diplectrona tasmanica Jacquemart

5(2) In ventral view one pair of prominent, sclerotised phallic spines dorsolaterally, small stout spines at their bases, in lateral view longer spines strongly curved dorsad............................................... Diplectrona spinata (Banks) *

-. In ventral view one small median spine and 2 pairs subequal sclerotised spines, usually directed laterad................................................................................................ Diplectrona inermis (Banks)