Fig. 33. A. brevicauda breviaauda. Variation in shape and pro- 

 portions of segments of second pleopod. From Williams (1970). 



TABLE 3 



PRINCIPAL DIFFERENCES BETWEEN TWO SUBSPECIES OF ASELLUS BREVICAUDA 



(males only) 



(From Williams 1970, Table 3) 



No. coupling hooks on sympod 



4-7 



width 



Pleopod 1 length 



distal segment 



0.40-0.50 



No. plumose setae on distal 

 segment 



5-11 



3-4 



0.50-0.62 



4-6 



Pleopod 2 



length 

 width 



sympod 



1.37-2.00 



No. plumose setae on distal 

 segment of exopod 



12-17 



1.25-1.60 



5-10 



uropod length 

 telson length 



0.48-0.68 



0.36-0.44 



40 



