218 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



SUBFAMILY 



TABLE TO THE TRIBES. 



Hind tibiae with two calcaria; humerus (2d A) and transverse 



median of the hind wings present .......................... Sirecini 



Hind tibiae with one calcaria: humerus (2d A) and transverse 



median of the hind wings wanting ........................ Xeriini 



SUPERFAMILY TENTHREDINOIDEA. 

 TABLE TO THE FAMILIES. 



First perapterum present... ..................................................... 1 



First perapterum wanting ........................................................ 6 



1. Abdomen sharply angled laterally so the dorsal sclerites 



are sharply divided into a dorsal and ventral surface; 

 antennae clavate ............................................... Cimbecidas 



Abdomen not sharply angled laterally; antennae not 



clavate ..................................................................... 2 



2. Sternauli (a suture separating the mesosternum from the 



mesoepisternum) present ........................................ 3 



Sternauli wan ting ........................................................... 4 



3. Posterior coxae well separated; antennae many-jointed 



Perreyiidse 

 Posterior coxae contiguous, or nearly so; antennae three- 



jointed ................................................................. Argidie 



4. Posterior coxae well separated; antennae four-jointed; 



first discoidal cell petiolate ............................. Blasticomidse 



Posterior coxae contiguous, or nearly so; antennae more 



than six-jointed; first discoidal cell not petiolate ........ 5 



5. Mesoepimeron divided into two plates, the dorsal one 



sculptured similar to the mesoepisternum; proepister- 

 num not divided into two plates; antennae many- 

 jointed, serrate in the female, pectinate in the male 



Diprionidse 



Mesoepisternum not divided into two plates; proepister- 

 num divided into two plates; antennae seven to twelve- 

 jointed, never serrate or pectinate .............. Tenthredinidx 



6. Sternauli (a suture separating the mesosternum from the 



mesoepisternum) wanting .......................... Pterygophoridse 



Sternauli present ........................................................... 7 



7. Posterior coxae well separated; propodeum not divided; 



antennae short, clavate; transverse median and basal 

 veins interstitial or nearly .................................... Pergidse 



Posterior coxae contiguous or nearly so; propodeum di- 

 vided; antennae longer, not clavate; transverse median 

 vein received well removed from the basal... _____ Loboceridtf 



