HOW TO KNOW THE INSEQS 

 XXV Order HYMENOPTERA (The Bees, Wasps, Ants, Etc.) 



1. Xyelldae. . 



2. Pamphlllldac 



3. Cephldae. . 



4. Xl-hydrlldae 



5. Slrlcldae . 



6. Crabronldae 



7. Argldae . . 



8. Dlprlonldae 



9. Tenthredlnldae 



10. Peterygophorldae 



11. Oryssldae . . 



12. Braconldae. . 



13. Ichr.eumonldae 



Trlgonalldae. 

 Aulacldae . . 

 Stephanidae . 

 Gasteruptlonldae 

 Ropronlldae . 

 Kelorldae . . 

 Vanhomlldae. 

 Dlaprlldae. . 

 Proctotrupldae 

 Calllceratldae 

 Ceraphronldae 

 Scellonldae . 

 Platygasterldae 

 Peleclnldae . 



28. Cynlpldae . . 



29. Calllmomldae. 



30. Per 1 lamp Idae. 



31. Chalcldldae . 



Eurytomldae . 

 Encyrtldae. . 

 Slgnlphorldae 

 Eupeljnldae. . 

 Pteromalldae. 

 Aphellnldae . 

 Eulophldae. . 

 TrlchograiTTildae 



*(Insects of Kew York) 



(5) The Xyelld Sawflies. 



The Web-splnnlng and Leaf-rolling Sawflles. 



The Stem Savyflles. Larvae bore In stens of plants. 



(1) The Xlphydrlld Sawflles. Small family of medium 

 sized bees. 



(1) The Horn-tails. Larvae are v/ood borers. 



(4) The American sawfly and others. 



(5) The Argld Saw-flies. Small family infesting 

 sv;eet potatoes, etc. 



Feed on pine and spruce. 



(64) The Typical Sawflles. Currant worm, rose slug, 

 pear slug, etc. 



(1) Feed on oaks, hickory, etc. 



The Orysslds. Adults very active, run on tree 

 trunks. 



(145) The Braconlds. Small to medium sized, slender 

 wasps . 



(227) The Ichneumon wasps. Some very small; mostly 

 fairly large slender '.vasps, parasitic. 



Parasitic In nests of social bees. 



:.:ostly parasitic on Coleoptera. 



Parasitic on \vood-borlng Insects. 



(2) Parasitic on solitary v/asps and bees. 

 Rare. 



Parasitic in cocoons of lace wings. 



Probably not in Iowa. 



Parasitic on flies. 



Parasitic on flies and beetles. 



Very small family. 



Very small parasitic wasps. 



Very important family of egg parasites. 



Parasitic on other Hymenoptera. 



Large, black, wasp-like species with abdomen of fe- 

 male very long. 



(47) The Cynlpids. Many are gall makers. 



Parasitic on gall makers or Infest seeds. 



Small parasitic v/asps. 



The Chalcld flies. Tiny parasitic bees with wing 

 venation much reduced. 



The wheat Joint worm, the wheat straw worm, etc. 



Small v;asps. 



Small family; not known to Iowa. 



Small egg parasites. 



Parasitic. 



Small wasps, parasitic on aphlds and scale insects. 



Small, parasitic on plant feeding v/asps. 



Parasitic. 



130 



