372 
M.S. Harvey 
setae situated in tubercles, and a single distal, 
medial seta. Legs (Figures 29-30): unmodified; 
tibiae and metatarsi with 1-4 very slender 
swimming setae, and with long, often thick, setae 
on many segments; male leg IV without thickened 
setae. 
Dimensions (vim), d (2): body 378-394/294-314 
(381—467/332-390); capitulum length 71-83 (70-80); 
genital field 70/99-115 (90-108/128-140). 
Pedipalp: trochanter 19-22 (21-22), femur 75-80 
(79-81), patella 34-42 (37-42), tibia 82-93 (90-102), 
tarsus 27-31 (31-33). Leg I: trochanter 45-48 (45- 
49), femur 61-62 (58-63), patella 90-97 (92-93), 
tibia 123-133 (120-125), metatarsus 145-156 (138- 
147), tarsus 132-148 (124-138). Leg IV: trochanter 
65 (71-73), femur 90-103 (74-75), patella 78-84 (93— 
94), tibia 96-102 (127-134), metatarsus 118-128 
(141-147), tarsus 126-128 (131-142). 
Deutonymph 
Much as in adults except that vgx is absent; 
genital region with 2 pairs of acetabula. 
Dimensions (pm): body 301/270. 
Remarks 
Australotiphys barmutai differs from its two 
congeners by the lack of a ventral shield and by the 
lack of expanded setae on male leg IV. Under these 
criteria it is clearly the most plesiomorphic species 
of the genus. A. barmutai appears to be restricted to 
southwestern Australia (Figure 10). 
Etymology 
This species is named for Leon Barmuta, intrepid 
collector of many freshwater invertebrates. 
Acercella Lundblad 
Acercella Lundblad, 1941: 119; K.O. Viets, 1987: 15. 
Type species 
Acercella falcipes Lundblad, 1941, by original 
designation. 
Diagnosis 
Leg III of male with tarsus swollen and with 
dissimilar claws; leg IV of male with metatarsus 
with a large, dorsal or dorso-distal blade extending 
over tarsus. Body of male with accessory 
sclerotization near genital field. Genital field with 3 
pairs of acetabula. Excretory pore surrounded by 
sclerotized ring. 
Remarks 
The addition of a second species to this endemic 
Australian genus neccesitates the alteration of the 
generic diagnosis provided by Cook (1974). In 
particular, the shape of coxae IV of the male: in A. 
falcipes the fourth coxae are nearly triangular, and 
the posterior margin of the coxal plate is virtually 
v-shaped (Figure 33); in A. poorginup the fourth 
coxae are rectangular, and the posterior margin of 
the coxal plate is transverse (Figure 43). 
Acercella falcipes Lundblad 
Figures 32-41, 52 
Acercella falcipes Lundblad, 1941: 119; Lundblad, 
1947: 66, figs 43a-f; K. Viets, 1956: 424; Cook, 
1974: figs 1175-1176, 1190. 
Material Examined 
Holotype 
d, Kalgoorlie, Western Australia, Australia 
[30°45'S, 121°28'E], cement dam, 14 January 1937, 
F. Linder (SMNH no. 2939; SL). 
Other Material 
Australia: Victoria: 2d, 22, 117 deutonymphs, 
swamp on Delegate River, Tea Tree Flat, 37°15'S, 
148°50'E, 6 April 1985, D. Cook, M.S. Harvey, A. 
Boulton (NMV; SL, FL); Id, 42, Lake Lalbert, near 
Kerang [35°40'S, 143°19'E], 20 January 1989, S. 
Fleming (WAM; FL); 222, Meyers Creek at 
Raywood [36°32'S, 144°12'E], 27 September 1985, 
C. Yule (NMV; FL); 3d, 3 deutonymphs, Meyers 
Creek, 4 km WNW. of Raywood [36°30'S, 
144°10'E], 5 November 1985, M.S. Harvey, B.J. 
Scott, L.A. Hoare (NMV; SL); 1 2 (labelled as 
allotype by Lundblad), Mt Macedon [37°23'S, 
144°35'E], 27 September 1936, F. Linder (SMNH no. 
3401; SL); 62, Tragowel Swamp, near Kerang 
[35°49'S, 143°57'E], 7 June 1989, S. Fleming (WAM; 
FL). Western Australia: 12, 1 deutonymph, lakes 
on Boat Harbour Road, 8 km WSW. of Parryville, 
35°01'S, 117°07'E, 30 August 1987, M.S. Harvey, 
J.D. Blyth (WAM 88/3010-3011; FL); 12, Lake 
Pleasant View, 4 km NE. of Manypeaks, 34°50'S, 
118°11'E, 2 September 1987, M.S. Harvey, J.D. 
Blyth (NMV; FL); 18d, 62, swamp in Melaleuca 
Park, 31°42’S, 115°57'E, 25 August 1987, M.S. 
Harvey, J.D. Blyth (WAM 88/2990-3002, NMV; SL, 
FL); lid, 142, North Lake, Perth, 32°05'S, 115°49'E, 
21 August 1987, M.S. Harvey (Id, 12 each in DCC, 
CNC, remainder in WAM 88/3003-3009, NMV; 
FL); 2d, same locality, January 1986, S. Rolls (WAM 
88/3012-3013; FL); 12, 2 deutonymphs. Wallaroo 
Rock, 8 km N. of Wallaroo Siding [30°48’S, 
120°29'E], 23 August 1985, M.S. Harvey, T.J. Doeg, 
R. Marchant (NMV; SL); Id, Thompson Lake 
[32°09'S, 155°50'E], south end, 30 August 1985, M.S. 
Harvey, T.J. Doeg, B. Murley (NMV; SL). 
Diagnosis 
Pedipalpal tibia with 2 small ventral setiferous 
