HUMES: COPEPODIDS AND ADULTS OF LEPTINOGASTER MAJOR 



Adult Male 

 Figures 8e, 9a-j 



Size-Length 1.82 mm (1.70-2.04 mm) and 

 greatest width 0.43 mm (0.40-0.47 mm), based on 10 

 specimens. 



Body form (Fig. 8e).— Similar to female but 10 

 body segments including and posterior to segment 

 of leg 1. Urosome (Fig. 9a) 6-segmented. Segment 

 of leg 5 135 x 236 ^m in dorsal view, with spines 

 on ventral surface as in female Four postgenital 

 segments from anterior to posterior 140 x 166, 135 

 x 143, 113 x 128, and 151 x 109 (im. Anal segment 

 with spines as in female Cephalosome ventrally with 

 outer strip of small spines and small sclerotized area 

 as in female 



Caudal ramus (Fig. 9a).— As in female but dimen- 

 sions 174 x 38 /um, ratio 4.6:1. 



Rostrum, first antenna, second antenna, labrum, 

 mandible, paragnath, first maxilla, and second max- 

 illa as in female 



Maxilliped (Fig. 9b).— Four-segmented. First seg- 

 ment with 1 inner smooth seta 50 fim. Elongate 

 second segment with 2 inner setae and 2 groups of 

 short spines. Small third segment unarmed. Claw 

 208 pm, proximal part representing fourth segment 

 bearing 3 setae Concave margin of claw stri- 

 ated. 



Legs 1-4.— With segmentation and armature as in 

 female, and ornamentation as in that sex except for 

 endopod of leg 2. 



Figure 9— Adult male of Leptinogaster major: a, urosome, dorsal (scale H); b, maxilliped, posterior (B); c, endopod of leg 2, anterior 

 (F); d, second segment of endopod of right leg, anterior (B); e, second segment of endopod of left leg (same individual as in d), anterior 

 Q3); f, second segment of endopod of leg 2, anterior (B); g, leg 5, dorsal (B); h, leg 5, ventrolateral (B); i, leg 6, ventral (F); j, sperma- 

 tophore, attached to female, ventral (A). 



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