90 



D. JAUME AND G.A. BOXSHALL 



0.05 mm 



Fig. 6. Neocyclops (Protoneocyclops) mediterraneus (Kiefer, 1960), adult male. A, antenna; B, labrum, ventral; C, mandible; D, maxillule; E. maxilla; 

 maxilliped. 



XXVIII), 11+2 aesthetascs. 



Antenna (Fig. 6A) well developed, 5-segmented. Coxa and basis 

 separate, coxa small, unarmed. Basis with 2 distal setae on inner 

 margin and long distal seta, representing exopod, on outer margin. 

 First endopod segment with seta inserted midway along inner mar- 

 gin. Second endopod segment with 2 lateral and 3 distal setae along 

 inner margin; outer margin covered by patch of setules. Third 

 endopod segment with 7 unequal setae on tip; outer margin adorned 

 with 2 patches of setules, as figured. 



Labrum (Fig. 6B) with laterally serrate distal margin and row of 9 

 rounded teeth midway along margin; paired transverse rows of long 



spinules located subdistally on anterior surface of labrum. 



Mandible (Fig. 6C) with coxal gnathobase armed with 9 sharp, 

 unequal teeth, 2 dorsal setae, and 1 naked setiform element located 

 between third and fourth ventralmost teeth; inner dorsal seta with 

 long spinules along one side; outer dorsal seta longer, with short 

 spinules on both sides; transverse row of 7 long spinules disposed 

 subdistally on cutting blade. Mandibular palp reduced to knob 

 bearing 3 unequal setae. 



Maxillule (Fig. 6D) with well developed praecoxal arthrite; arma- 

 ture consisting of 3 stout spines, 1 tiny spine and 3 slender setae 

 proximally, and distal lobe armed with 4 thick, denticulate spines; 2 



