HAYNES: EARLY ZOEAL STAGES OF LITHODID CRABS 



spinulose setae are shown. Five zoeae were used to 

 verify segmentation and setation; 10 zoeae were 

 used for measurements. Only those morphological 

 characteristics useful for readily identifying each 

 stage are given. 



Placet rou wosnessenskii — Stage I Zoeae 



Mean carapace length, 2.12 mm (range 2.08- 

 2.21 mm, 10 specimens); mean total length, 6.22 



mm (range 5.90-6.70 mm, 10 specimens) (Fig. 1A, 

 B). Live zoeae orange throughout except for color- 

 less appendages and posterolateral spines on 

 carapace and abdomen. Carapace with medially 

 curved, long (>l/4 carapace length), posterolat- 

 eral spines; markedly pronounced lateral ridges 

 and dorsoventral ridge; and two middorsal angu- 

 lar prominences: one near center of carapace and 

 other at posterior edge. No supraorbital spines. 

 Eyes sessile. 



1 .0 mm 



I, second maxilliped, lateral; J, third maxilliped, lateral; K, pereopods 1-5, lateral; L, abdomen and telson, dorsal. 



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