HAYNES: DESCRIPTION OF GOLDEN KIN(J CRAB LARVAE 



Pleopods, — Pleopods 2-5 bilobed, unsegmented, 

 without setae, about one-third height of somites. 



Abdomen and telson. — Abdomen same shape and 

 spination as in Stage I. In Stages II-IV, telson 

 with 12 + 12 (rarely 11 + 12) densely plumose 

 setae; tenth setal pair longest (about one-fourth 

 telson width), fused with telson. Telson fused 

 with somite 6. 



STAGE III ZOEA 



Mean total length of Stage III zoeae, 7.6 mm 

 (range 7.4-8.4 mm, 10 specimens). Rostrum (Fig. 

 3A) more styliform than in Stages I and II, about 



one-half carapace length, with short spine and 

 minute hair at base. Lateral margin of carapace 

 indented just posterior to eye. 



Antennule.— Inner projection and peduncle two- 

 segmented; outer projection three-segmented. 



Antenna.— Inner flagellum of antenna five-seg- 

 mented; terminal segment with four or five 

 simple setae and small, distinct spine at tip. 



Mandibles.— Essentially same as in Stage II. 



Maxillule. — Basipodite with two or three addi- 

 tional short, blunt spines compared with Stages I 

 and II. 



Maxilla. — Scaphognathite with 23 plumose 

 setae along inner and outer margins; naked 

 proximal expansion slightly longer than in Stage 

 II. 



Maxillipeds. — Essentially identical to Stage II 

 maxillipeds except naked endopodite of third 

 maxilliped five-segmented; exopodite with nine 

 natatory setae. 



Pereopods (Fig. 3B, pereopod 1).— Essentially 

 identical to Stage II except chelae of pereopod 1 

 slightly narrower than in Stage II; protopodite 

 usually with five spines. 



Pleopods. — Lengths of pleopods 2-5 about equal 

 to heights of somites; pleopod 6 small, nonfunc- 

 tional. 



Telson (Fig. 3C). 

 (rarely 11 + 12). 



-With 11 + 11 plumose setae 



Figure 3.— Stage III zoea of Lithodes aequispina: A, carapace, 

 lateral; B. pereopod 1, lateral; C. telson, ventral. 



STAGE IV ZOEA 



Mean total length of Stage IV zoeae, 6.8 mm 

 (range 6.3-7.4 mm, six specimens). Rostrum 

 (Fig. 4A) about four-tenths carapace length. 

 Carapace markedly more spiny than in Stage 

 III. 



Antennule. — Outer projection four-segmented, 

 with about 14 aesthetascs; distal and penulti- 

 mate segments each with long seta and two short 

 setae. 



Antenna (Fig. 4B). — Antennal flagellum eight- 

 segmented, about 1.3 times length of scale. 



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