Key to ♀♀ of Xeroderus

1. Mesonotum with raised central area, armed with short lateral spines and several on the disc; outer and lateral spines more numerous and conspicuous.Alae transparent with brownish veins and tinge, with reddish inner margin. Subgenital plate tapered at tip, almost reaching end of abdomen (9 th and anal segment with much reduced lateral lobes than preceding abdominal segments); cerci longer than anal segment. Body length 85.0–106.0 mm. Distribution: northern and SE Queensland, possibly more widespread (Figs. 1–2, 4–6).................................................................... kirbyi

- Mesonotum with raised central area, armed with two large, broad spines posteriorly, two more paired large lateral spines each side and several smaller, stout ones, in a distinct pattern; small lateral spines also present beneath this ridge. Alae dark brown. Subgenital plate broad, rounded at tip, reaching end of abdominal segment 9 (the latter and anal segment with large lateral lobes, as with preceding abdominal segments); cerci broad, shorter than anal segment. Body length 96.0 mm. Distribution: Papua New Guinea (Figs. 3–4)................................................................. conlei sp. n.