Australian Pionidae 
381 
Diagnosis 
Male genital field with deep, central pit, and with 
2 large acetabula and many small acetabula; female 
genital field with acetabula lying on 2 large plates, 
each plate with 2 large acetabula and many small 
acetabula. Pedipalpal tibia with distal thickened 
seta. Anterior claw of male tarsus III strongly 
modified. 
Description 
Adult 
See Cook (1986). Glandularia: 5 pairs of 
dorsoglandularia, 4 pairs of lateroglandularia and 
6 pairs of ventroglandularia (Figures 53-54). 
Deutonymph 
Much as in adults except that vgx is absent; 
genital region with 2 pairs of acetabula. 
Remarks 
The type material of Atax cumberlandensis also 
contains an adult specimen of Hydrodroma 
monticola (Piersig) (Hydrodromidae), and thus a 
lectotype of A. cumberlandensis is designated. 
The original description of Fiona uncatiformis by 
Lundblad (1941) was very brief; he simply 
mentioned male characters and referred to '8' from 
'Australien, Victoria'. No holotype was designated, 
and no specific type locality was mentioned. 
Subsequently, Lundblad (1947) published a more 
extensive redescription and referred to a 'Typus', 
an 'Allotypus' from New South Wales, and to 
various localities in Victoria from which other 
specimens had been collected. As no holotype was 
mentioned in the original publication, I have 
considered that the types from Victoria should be 
regarded as syntypes (Article 72a of the 
International Code of Zoological Nomenclature 
(third edition)], but that the restriction by 
Lundblad (1947) of a 'Typus' can be construed as 
designation of a lectotype under Article 74b of the 
Code. The remaining specimens from Victoria are 
treated as paralectotypes, but the 'allotype' from 
New South Wales is excluded from the type series. 
The synonymy of Piona uncatiformis with A. 
cumberlandensis by Cook (1986) is confirmed by 
comparison of the type series of both species. Piona 
cumberlandensis is widely distributed in Australia 
(Figure 52). It belongs to the Piona coccinea group 
as defined by Smith (1976). 
Mating was observed between males and females 
of this species during August 1987, after specimens 
had been taken from North Lake, W.A., and placed 
in watch-glasses. The female hooked her pedipalps 
over the tibiae IV of the male whilst upside-down. 
The male then transferred the spermatophore from 
his genital aperture to the female's aperture by 
cupping it between his modified tarsi III. 
Piona australica K.O. Viets 
Figures 52, 55-66 
Piona australica K.O. Viets, 1980: 164, figs 25-31. 
Types (not examined) 
Holotype 
8, Lake Hume, Albury, New South Wales, 
Australia [ca. 36°10'S, 147°05'E], 13 December 1977, 
R. Shiel (VC). 
Par a types 
Australia: New South Wales: 4 9 (including 
allotype), same data as holotype (VC); 19, 
Boorowa River [ca. 34 <> 10'S, 148°48'E], 10 April 
1977, R. Shiel (VC). 
Material Examined 
Australia: New South Wales: 129, Burgess 
Lagoon via Maitland [ca. 32°44'S, 151°34'E], 13 
April 1984, B.V. Timms (NMV; SL, FL); 28, 89, 5 
deutonymphs. Lake Hume [ca. 36°10'S, 147°05'E], 
21 February 1991, V. Matveev (WAM; FL); 29, 
Lake McKenzie, Jervis Bay, ca. 35°08'S, 150°43'E, 20 
January 1989, B. Timms (WAM; FL). Western 
Australia: Id, 89, pools in Rudall River, Great 
Sandy Desert, ca. 22°20'S, 122°00'E, 23 March 1988, 
R. Hart (WAM 88/3014-3018, NMV; SL, FL). 
Diagnosis 
Male genital field without deep, central pit; 
female genital field with acetabula lying on small, 
scattered plates. Pedipalpal tibia with stout, distal 
seta. Anterior claw of male tarsus III strongly 
curved, without ventral clawlet. 
Description 
Adult 
Colour (in alcohol) pale yellow. Glandularia: 5 
pairs of dorsoglandularia, 4 pairs of 
lateroglandularia, and 6 pairs of ventroglandularia 
(Figures 55, 58, 59). Dorsum (Figure 58): with a 
single pair of dorsalia. Venter (Figures 55, 59): 
apodemes of coxa I very short; suture lines 
between coxae I and II and coxae III and IV 
present; suture lines between coxae III and IV 
extending antero-laterally. Genital region (Figures 
56, 57): 5-6 (<J), 5-8 (9) pairs of acetabula; those of 
8 all lying on acetabular plate, acetabula unequal 
in size, the posterior pair larger than remaining 
pairs; those of 9 lying on small, scattered plates. 
Chelicera not examined. Pedipalp (Figures 65, 66): 
tibia with stout disto-ventral seta; tarsus with 3 
disto-dorsal setae. Legs (Figures 60-64): 8 tarsus 
III with extremely shortened and thickened tarsus, 
and with unequal claws, anterior claw shortest, 
without ventral clawlet (Figure 61); 8 tibia IV with 
lateral concavity bearing 4 anterior and 2 posterior 
