PTER0MALID.E. 



99 



the female with two rings and with a 

 three-jointed club. Stigma incrassated. Oxtglypta. 



H Antennae with two ringlets and with a three- 

 jointed club. Stigma not incrassated. - Stictonotus. 

 B. Furrows of the parapsides not deeply defined. 



a. Antenna? 12-jointed. 



* Thorax longer than the abdomen. - - Meraporus. 

 ** Thorax shorter than the abdomen. - - Metastenus. 



b. Antennas 13-jointed. 



* Front strongly punctured. Oviduct very 



prominent. . . . Roptrocerus. 



** Front not or slightly punctured. Oviduct 

 not or slightly prominent. 

 •j- Antennae with three ringlets. 



| Antennae with much incrassated tips. - Metopon. 



H Tips of the antennae not much incrassated. 

 § Thorax flat above. Body slender, nearly 



linear. - ■ - - Platyterma. 



§§ Thorax convex above. Body short, broad. Amblvmerus. 



ft Antennae with two ringlets. 



I Stigma much incrassated. - - - CjEnacis. 



H Stigma not incrassated. 



§ Radius much incrassated. - - - Xenocrepis. 



§§ Radius not incrassated. 

 X Head with a smooth line, that extends from 



the base of the mandibles to the vertex. Peridesmta. 



X X Head with no smooth line. 



o Fore wings with a strong costal excavation. Simopterus. 



oo Fore wings with no costal excavation. 



-+■ Radius and cubitus much shortened. - Dibrachys. 



-+—*- Radius and cubitus not much shortened. 

 *-* The two ringlets hardly shorter than the 

 following joints. Cheeks very broad. 

 Hind head much excavated. - - Cozlopisthia. 



*-**»* The two ringlets very small. 



«?■= Cheeks very prominent. - - - Digeochis. 



mww Cheeks not very prominent. 



A Femora thick, especially the fore femora. 

 V Ulna incrassated. 

 |> Radius and cubitus not half the length of 



the ulna. .... Metacolus. 



>- > Radius and cubitus more than half the 



length of the ulna. - - - Pandelus. 



VV Ulna not incrassated. 

 >■ Stigma curved downward, round. - Dinotls. 



