134 



THE STUDY OF INSECTS 



C. Epimera of mesothorax attaining the oblique coxae, p. 154 . . . . Scarab/Eid^e 



CC. Epimera of mesothorax not attaining the coxae, p. 159 Trogid^e 



AA. Plates composing the club of the antennae not capable of close apposition, and 

 usually not flattened. 

 B. Men turn deeply emarginate, ligula filling the emargination. p. 160. .Passalid.^ 

 BB. Mentum entire, ligula covered by the mentum or at its apex. p. 159. 



LuCANIDvE 



TABLE VII. — FAMILIES OF THE PHYTOPHAGA 



This series includes three families, which are so connected by intermediate forms 

 that it is not easy to separate them. The . following table will aid the student in 

 separating the more typical forms. 

 A. Body elongate; antennae almost always long, often as long as the body or longer. 



The larvae are borers, p. 160 CerambyciDjE 



AA. Body short and more or less oval; antennae short. 



B. Front prolonged into a broad quadrate beak; elytra rather short so that the 

 tip of the abdomen is always exposed. The larvae live in seeds, p. 167. 



Mylabrid^e 



BB. Front not prolonged into a beak; usually the tip of the abdomen is covered 

 by the elytra. Both larvae and adults feed on the leaves of plants, p. 164. 

 ChRYSOMELIDjE 



TABLE VIII. — THE FAMILIES OF THE RHYNCHOPHORA 

 (Compiled from Blatchley and Leng) 

 A. Beak rarely absent, usually longer than broad; tibiae never with a series of teeth 

 externally. 

 B. Antennae straight without a distinct club, though with the outer joints often 

 more or less thickened; beak present at least in the female and pointing 

 directly forward; form usually very slender and elongate, p. 169. . . Brentid/E 

 BB. Antennae straight or elbowed, always with a distinct club. 



C. Palpi flexible; antennal club rarely compact; beak always short and broad; 

 labrum present; thorax with a transverse raised line which is either ante- 

 basal or basal, p. 169 Platystomid/e 



CC. Palpi rigid and labrum wanting except in the subfamily, Rhinomacerinae 

 antennal club usually compact; beak variable in length, often long and 



curved downwards, p. 169 Curculionid^e 



AA. Beak absent or extremely short and broad; tibiae with a series of teeth ex- 

 ternally, or, if these are wanting, with a prominent curved spine at apex; an- 

 tennae short, but little longer than the head, always elbowed, and with a compact 

 club except in Phthorophoelus where the club is lamellate; palpi rigid; body 

 short, subcylindrical or rarely oval. 

 B. Anterior tarsi with the first segment longer than the second, third and fourth 



together, p. 171 Platypodia: 



BB. Anterior tarsi with the first segment shorter than the second, third, and fourth 

 together, p. 172 Scolytid^e 



THE CARNIVOROUS BEETLES 



Suborder Adephaga * 



The name of this suborder, Adephaga, was 

 suggested by the predacious habits of its 

 members. These beetles are distinguished 

 from other Coleoptera by the presence of a 

 suture on each side of the prothorax separat- 

 ing the pleurum from the notum, and by the 

 fact that the ventral part of the first segment 

 of- the abdomen is divided by the hind 

 coxal cavities so that the sides are separated 

 from the very small medial part (Fig. 219). 



The larvae are campodeiform, and differ from all other beetle larvae in 

 * Adephaga: adephagous (kb-qdyayos) , voracious. 



1 st A 



Fig. 2iq. — Ventral aspect of part of 

 thorax and abdomen of Galerita janus: 1st 

 A, first abdominal segment; 2d, A, second 

 abdominal segment. 



