56 
Records of the Australian Museum (2009) Vol. 61 
National Park, Killambirdie Waterhole, 25°48'S 144° 30'E, 
8.v. 1996; B.V. Timms, AM P55618. Central Australia: 2S, 
no details, Prof Spencer, NMY J54043; IS, Onkaparinga 
Ck, no details, Prof Spencer, NMV J54053. South Australia: 
3 S, 1$, Olympic Dam, 30°28’S 136°44'E, 12.ii.1981, M.J. 
Tyler, SAM C6347; 1 $, Olympic Dam, 44 km east, 30°28'S 
136°45'E, 12.ii. 1987, M.J. Tyler, SAM C6348; 3c3, 3$, 
Olympic Dam, 8 km on track to Lake Blanche, a samphire 
swamp, 30°29'S 136°48’E, M.J. Tyler, SAM C6349; IS, 
Roxby Downs, 30°42’S 136°46'E, M.C. Geddes, SAM 
C6350; 3c3,96km N of Port Augusta, M. Wickstein, ii.1962, 
SAM C6354. Western Australia: Gascoyne District, Landor 
Station, pool near homestead, no date or collector, WAM 
C3485; 11 km S of Wittenoon, pools at head of Joffie Falls, 
22°23'S 118°16'E, 12.vi.1970, M. Shepherd, WAM C39331; 
near Yalgoo, 5.X.26, J. Clark, NMV J43991; KM, 10$, 
W of Cue, Austin Downs Station, swamp near homestead, 
31 .viii.2004,27°23’S 117°45’E, B.V. Timms, WAM C39332; 
c. 35 individuals, near Laverton, roadside swamp 20 km 
west, 28°36'S 122°13’E, 22-1-2007, B.V. Timms, WAM 
C39333. 
Distribution. Australia-wide, mainly in the central and 
northern inland. It is not recorded from southern NSW, 
Victoria, Tasmania, southern SA, or southern WA. 
Description of neotype. Carapace (Fig. 6A) 12 mm by 7.6 
mm, L:D ratio c. 1.6. Dorsal margin weakly curved convexly, 
with anterior portion depressed at umbo and slightly upturned 
towards dorsoanterior corner. Ten robust growth lines. 
Carapace dorsal surface with each growth line extended as 
carina. Carinae posterior to umbo large and asymmetrical and 
directed posteriorly, but those anterior to umbo the carinae 
minor and constituting small, anteriorly-facing steps in the 
dorsal line. Each carinae wholly contained within a single 
growth zone. Umbo area slightly widened anterolaterally. 
Carapace surface texture granular. 
Head (Fig. 6B) with pyriform frontal organ situated pos¬ 
teriorly, preceded by a rounded ocular tubercle, and rostrum 
orientated at right angle to head. Rostrum length about 1.5 
times its basal width; apex rounded and slightly bent pos¬ 
teriorly and base containing triangular naupliar eye dipping 
obliquely with respect to rostrum axis and occupying much 
of its basal area. 
First antenna a little longer than second antenna peduncle, 
with 10 subequal lobes. Second antenna with two flagellae, 
each composed of about 15 beaded flagellomeres, these of 
variable length but generally longer and thicker proximally. 
Most of middle flagellomeres with 5-7 spines laterally, with 
no apical grouping. 
Trunk segments 26. Posteriormost segment with spineless 
dorsal protuberance, preceding 7 segments each with 1-3 
spines its protuberance; next more anterior 6 segments with 
long setae varying in number from many posteriorly to 
1-2 on more anterior segments (Fig. 6C). Hand of claspers 
(Fig. 6D) with asymmetrical outgrowth on anterior edge of 
basal half. Immovable finger with numerous spines apically: 
Fig. 6. Limnadopsis tatei Spencer & Hall, lectotype, central Australia. Male: (A) carapace; ( B ) head; (C) telson and 
dorsoposterior surface of trunk; (D) second clasper. Scale bars 1 mm. 
