TYPICAL WASPS AND HORNETS. 



hind part of the abdomen is modified to form a retractile 

 tube. The colors are extremely beautiful and well repay 

 the use of a lens. We have but one family, CHRYSIDID^E. 

 The following key to certain genera is practically that of 

 the Hymenoptera of Connecticut. 



1. Tongue not longer than thorax 2. 



Tongue longer than thorax, bee-like Parnopes. 



2. Third abdominal segment with grooves or pits near 

 the margin ; head at least as broad as postscutellum .... 



Chrysis (Plate XC). 

 Third abdominal segment without such grooves 3. 



3. Tarsal claw with 2 to 6 teeth besides apical one 4. 



Not so 5. 



4. Apical abdominal segment produced as if pinched; 

 apical margin of third abdominal segment indented, the 

 indentations more or less filled with a membrane . Notozus. 



Apical segment not "pinched"; margin of third 

 segment notched, rounded Omalns. 



5. One small, perpendicular tooth in middle of tarsal 

 claw Hedychridium. 



Tarsal claws cleft Hedyclirum. 



VESPOIDEA 



The typical "Wasps," Hornets, and their relatives, 

 belong here. 



1. Winged 2. 



Wingless, or with wings much reduced in size 10. 



2. Hind wings without distinct venation, with no closed 

 cells. Parasitic 3. 



Hind wings with well-developed venation and closed 

 cells 4. 



3. Head oblong, rather flat above; antennas inserted at 

 the clypeus, at least 12 joints; small, usually black or 

 bronzed; females often wingless; abdomen more or less 

 elongate BETHYLID/E. 



Head transverse or somewhat squared; antennas 

 i o- jointed; front tarsi of female usually pincer-shaped . . . . 



DRYINID^E. 



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