Australian Arrenurus 
241 
Figures 25-29 Arrenurus (Megaluracarus) caeruleus sp. nov., holotype <J (unless stated otherwise): 25, ventral view; 26, 
dorsal view; 27, lateral view; 28, palp; 29, ventral view, paratype 9. Scale lines, 50 pm (Figure 28) 200 
pm (Figures 25-27, 29). 
Remarks 
The very slender PIV, with the very short 
anterior margin, is unusual in Arrenurus, and easily 
separates the new species from other members of 
the genus. 
Etymology 
Named after the type locality. 
Arrenurus (Arrenurus) rouxi Walter 
Arrhenurus pseudoaffims (in part, $) Piersig, 1906: 
360. 
Arrhenurus rouxi Walter, 1915: 120; Walter, 1928: 
259. 
Arrenurus rouxi Walter: K. Viets, 1935: 9; Cook, 
1967: 228; Lundblad, 1969: 417; Wiles, 1990: 281. 
Material Examined 
Australia: Western Australia: 1 $, Deep Reach 
Pool, Millstream-Chichester National Park, 15 
August 1994 (ZMA). 
Remarks 
A widespread species, known from New 
Caledonia, Sumatra, Java, Burma, India, Burma, 
Singapore, Sri Lanka and Sulawesi. The new record 
is the first for Australia. 
Arrenurus (Megaluracarus) caeruleus sp. nov. 
Figures 25-29 
Material Examined 
Holotype 
<J, Pools upstream of Waterfall Creek, Kakadu 
