REVISION OF LEUCOSPIDAE 



17 



Figs 16-21. Polistomorpha. 16. P. surinamensis , ?. 17. P. conura, head in oblique 

 ventrolateral view showing the labio-maxillary complex. 18. Ditto in P. fasciata. 

 19, 20. P. nitidiventris. 19, apex of gaster in $; 20, venation of fore wing. 21. 

 P. sphegoides, propodeum, hind coxa, femur and gaster in $. 



B 



