Limnoria insulae 195 



Key to species of Limnoria 



1. Dorsal surface of pleotelson lacking prominent tubercles, ridges, or 



carinae (/,. simulata may appear to lack ornamentation; in this 



species the tubercles are very small) 2 



Dorsal surface of pleotelson bearing tubercles, ridges, or carinae .... 3 



2. Pleotelson flat; pleonite 5 with broadly rounded middorsal ridge 



platycauda 



Pleotelson cup shaped; pleonite 5 with strong narrowly rounded 



middorsal ridge insulae 



3. Pleotelson with basal tubercles but lacking ridges 4 



Pleotelson with ridges but lacking freestanding tubercles 7 



4. S pleotelson with single strong middorsal tubercle unicornis 



Pleotelson with more than one basal tubercle 5 



5. Pleotelson with three basal tubercles tuberculata 



Pleotelson with more than three basal tubercles 6 



6. Pleotelson with four basal tubercles in line (difficult to detect) simulata 

 <S pleotelson with six basal tubercles indica 



7. Pleotelson with single middorsal longitudinal ridge multipunctata 



Pleotelson with two rounded basal ridges 8 



8. Pleonite 5 with strong Y-shaped ridge Pfojff^^ 



Pleonite 5 with two posteriorly converging ridges saseboensis 



Limnoria insulae Menzies, 1957 

 Figure 86C 



DIAGNOSIS 6 3.0 mm, ovigerous 9 3.4 mm. Pleonite 5 with strong middor- 

 sal ridge. Pleotelson cup shaped, lateral crests extended anteromesially, sep- 

 arated basally by distinct gap; posterior margin and lateral crests not 

 tuberculate. 



RECORDS Twin Cays, Belize. 



Fiji; Guam; Palmyra Island; Caroline Islands. 



