343 LIFE STORIES OF AUSTRALIAN INSECTS. 



CARABS AND TENEBRIONIDS. 

 Family Carabidae and Family Tenebrionidae. 



We take these two types together, not because 

 they are closely related, but in many cases they 

 resemble each other in outward form and are often 

 confused by beginners. 



We will give a summary of the chief differences 

 in the outward form of these two groups. 



Carabs (Plate 30, Fig. i). 



(i) Antennae usually filamentous, that is, thread- 

 like, and tapering to a more or less fine 

 point. (Plate 30, Fig. i, b.) 



(2) There are five joints on all the feet (Plate 

 30, Fig. I, a.): The fifth joint carries the 

 claw. The joints are usually longer than 

 in tenebrionids. 



(3) The legs are highly developed for running 

 — they are strong and long, for carabs are 

 predaceous, that is, they hunt other insects 

 and devour them. 



Tenebrionids (Plate 30, Figs. 2 and 5). 



(i) Antennae are thread-like in the lower part, 

 but instead of tapering at the tip, they 

 become thicker and form a rather narrow 

 club, in some cases. (Plate 30, Fig. 5a). 



(2) There are 5 joints on the front pair of legs: 



