Australian Arrenurus 
245 
Figures 41-44 Arrenurus (Megaluracarus) thienemanni K.O. Viets: 41-43, <S: 41, ventral view; 42, dorsal view cauda; 43, 
lateral view; 44, ventral view, 9. Scale lines, 200 pm. 
Territory, Australia, 12 July 1981, B.V. Timms 
(SMF, slide 7443). 
Para types 
Australia: Northern Territory: 3 9, same data as 
holotype (SMF, slides 7448, 7449, 7450). 
Other Material 
Australia: Northern Territory: 2 6,3 9, Lake 
Jabiru, Jabiru, 20 July 1994; 2 6,4 9, Southern 
Rockhole, Katherine Gorge National Park, 27 July 
1994; 16 6, 13 9, Pools upstream of Waterfall 
Creek, Kakadu National Park, 25 July 1994; 1 9, 
Pool near Jim Jim Falls, Kakadu National Park, 23 
July 1994; 4 6, Lily Ponds Falls, Katherine Gorge 
National Park, 27 July 1994 (all ZMA). 
Description 
Male 
The cauda of the male has two indentations in 
lateral view, one large and one small, with a large, 
obtuse hump. Viets illustrated the cauda without 
these indentations, although they can be observed 
