SYNOPSIS OF CERAMBYCOID LAEV-E. 153 



Subdivision C. 



Ninth abdominal segment with blunt chitinized tubercle on posterior dorsal margin. 



Graphisurus. 

 Ninth abdominal segment without chitinized tubercle Acanthodniis. 



Family Cerambycid^. 



Epipleural lines on protergum distinct for entire length of prothorax Division I. 



Epipleural lines on protergum indistinct, or faintly impressed on anterior part of pro- 

 tergum Division II. 



DIVISION I. 



Legs present Subdivision A. 



Legs lacking Subdivision B. 



Subdivision A. 



Legs long Section al. 



Legs short Section a2. 



Section al . 



Long hairs on anterior part of protergum dense. Median line of protergum showing 

 for entire length of segment Chion. 



Section a2. 



Head bearing long, dense hairs near base of antennae CEme. 



Head not bearing long, dense hairs near base of antennae Subsection bl. 



Subsection bl. 



Median line on protergum distinct only on anterior portion of segment. . . . Tylonotus. 

 Median line on protergum distinct on posterior portion of segment Series cl. 



iSeries cl. 



Head with an ocellus near base of each antenna Phymatodes. 



Head without ocelli Euderces. 



Subdivision B. 



Median line of protergum indistinct Opsimus. 



Median line of protergum distinct Section a3. 



Section aS. 



Median line of protergum deeply impressed on anterior half of segment. . . Clytanthus. 

 Median line of protergum not deeply impressed on anterior half of segment. 



Cyrtophorus, 

 DIVISION II. 



Sternum and sternellum of prothorax differentiated Subdivision C. 



Sternum and sternellum of prothorax not differentiated Subdivision D. 



Subdivision C. 



Body robust. Abdominal segments 3, 4, 5, and 6 not constricted near middle. 



HylotTupes bajulus. 

 Body slender. Abdominal segments 3, 4, 5, and 6 constricted near middle. 



Smodicum. 



