COLEOPTERA 129 



GG. Antennae with club made of flattened 

 plates, lamellate. 

 H. Plates of antennal club separated. 



Lucanidce. 

 HH. Plates of antennal club appearing 



as one piece. Scarabceidce. 



EE. Not scavengers. Feeding usually on vegeta- 

 tion. 

 F. Antennas lamellate. Lucanidcs and Scar- 



abceidce, as above. 

 FF. Antennae not lamellate. 



G. Antennae saw-like. Bodies usually slen- 

 der oval. 



H. Body rather soft. Lampyridce. 

 HH. Body extremely hard. 



I. Pro-thorax with angles projecting 

 backward and with process on 

 prosternum projecting backward 

 into groove on mesosternum. 

 Elateridte. 



II. Pro-thorax generally narrowed 

 slightly; surface of body less 

 even than in previous family. 

 Buprestidce. 

 GG. Antennae not saw-like. 



H. Tarsi with three joints easily seen. 

 Small, oval, nearly hemispherical, 

 black or yellow, red and orange mix- 

 tures. Coccinellidce. 



HH. Tarsi with more than three visible 

 joints. 



I. Tarsi with four visible joints. 

 J. Antennae usually longer than 

 body. Medium to large in 

 size, slender. Wood borers. 

 Cerambycidce. 



JJ. Antennae of normal length. 

 K. Short, oval, seed-infest- 

 ing species, usually found 



