1917 



Phylogeny of the Elateridce 



255 



The second tribe, the Agriotini, includes Agriotes, Dolopius, 

 Ectinus, Adrastiis, Betarmon, etc. The larvae (Fig. 7) are 

 characterized by having the "plaque nasale" tridentate; the 

 ninth abdominal segment more or less bluntly pointed caudad, 



Fig. 7. Agriotes mancus Say. a, dorsal aspect of larva; b, ventral aspect of 

 maxillae and labium; c, nasale and front; d, lateral aspect of invagina- 

 tion on 9th abdominal segment (dissected out); e, same from inside 

 surface of integument; f, ventral aspect of right mandible; g, antenna; 

 h, lateral aspect of 8th, 9th and 10th abdominal segments. 



never smoothly rounded as in the Steatoderini, nor bearing a 

 conspicuous terminal spine as in the Elaterini. The adults 

 have the front strongly convex and lack the transverse carina, 

 the mouthparts being directed downward. 



