19 B 



Altica himarginata, larva. Fig. i8A: dorsal aspect, showing 

 setae; fig. i8B: ventral aspect, showing setae; fig. i8C: lateral 

 aspect, showing setae; fig. 19A: lab rum ; fig. 19B: mandible; fig. 

 19C : maxillae and labrum. For explanation see pages 258-260. 

 Setae marked with an asterisk (*) are never found in first and 

 second instar larvae ancj may be 'yvanting in the third instar, 



