19 B 



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

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

 aspect, showing setae; fig. igA: labrum; fig. 196: mandible; fig. 

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

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

 second instar larvae and may be wanting in the third instar. 



