Timms: A revision of Limnadopsis clam shrimps 
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[Also: mature specimens c. 13-15 mm long with 12-13 growth lines; L:D ratio c. 
1.5; dorsal margin of carapace markedly stepped or with small carinae at each growth 
line-dorsal hinge line junction; middle flagellomeres of each second antenna with 
6-7 spines on anterior margin, all arranged linearly; caudal claws evenly curved 
with c. 18 proximal setae and usually just one spine at midlength; dorsoposterior 
corner of carapace sharp due to a spine-like outgrowth of growth line there; eggs 
top-shaped (a prominence dorsally and ventrally, and 4-5 equatorially); carapace 
coloured dark humic brown.] 
5 Growth lines in mature specimens >20, often up to c. 30; 
carapace with a distinct but blunt dorsoposterior corner and 
with a much expanded posterior/ventroposterior edge; dorsal 
margin of male carapace almost straight . L. multilineata n.sp. 
[Also: umbo expressed and pointed; L:D ratio c. 1.6; growth lines usually crowded 
at margin, though this could be due to ecological conditions; height of eye 
generally less than that of pyriform organ; first antennal lobes c. 6-7; about 18-20 
flagellomeres on second antenna, middle ones with 3-5 spines arranged linearly; 
dorsal telsonic spines 13-18, first spine a little (<1.5) bigger than remainder; caudal 
claws with c. 15 setae, last few intermixed with c. 5-6 caudal claw spines; eggs 
bell-shaped; carapace coloured lustrous dark brown.] 
-Growth lines <19; carapace without protruding dorsoposterior 
corner and posterior edge may be widened but not in ventro- 
posterior area; dorsal margin of male carapace convexly curved. 6 
6 24 trunk segments; telson with spiniform process on ventroposterior 
corner below cercopod; 18 growth lines. L. minuta n.sp. 
[Also: carapace <10 mm long; no sexual dimorphism in carapace shape; L:D ratio 
c. 1.9; lobes on first antenna c. 8 in males and c. 6 in females; flagellomeres of 
second antenna numbering about 18-20 and middle flagellomeres with c. 4 spines 
each with 2-3 of these crowded apically, leaving basal anterior surface of segment 
bare; c. 17 telsonic spines in each row; 12-15 caudal setae, 3-5 caudal spines, 
posteriormost 3 times larger than others; dorsal surface of telson between spine 
rows with a marked depression immediately posterior to the insertion mound of 
telsonic setae; eggs polyhedral.] 
-25-26 trunk segments; telson without spiniform process on ventro¬ 
posterior comer.; <17 growth lines. 7 
7 Dorsal telsonic spines 18-24; cercopods with 4-9 spines at mid¬ 
length; dorsal telsonic spines evenly sized and spaced. L. parvispinus Henry 
[Also: carapace up to 16 mm in length, L:D ratio c. 1.7; first telsonic spine usually 
about 1.5 times the next few; middle antennal segments with 4-7 spines each, with 
perhaps not all linearly arranged; c. 15 setae on caudal claws; 25-26 body segments; 
dorsal hinge of carapace not depressed at or near umbo; eggs subconical cylinders; 
carapace of various colours, often variegated brown.] 
-Dorsal telsonic spines c. 13-16; cercopods with 3-5 spines mid¬ 
length; telsonic spines variable in size and spaci. L. occidentalis n.sp. 
[Also: carapace up to about 12 mm in length, L:D ratio c. 1.6; the first telsonic spine 
variable in size with respect to the others; middle flagellomeres of second antenna 
with 5-7 spines each, not all arranged linearly; 12-15 setae on caudal claws; 25 
body segments; dorsal margin of carapace often depressed at umbo and anterior to 
it; eggs round with short randomly orientated grooves; carapace various colours 
often yellowish.] 
