1. Echlnophthlrlldae, 



2. Pedlculldae. . . , 



3. Haematoplnldae . , 



HOW TO KNOW THE INSECS 

 XVI Order ANOPLURA (The True Lice) 



*( Insects of New York) 

 . On seals and walrusses. 

 . Lice Infesting man; eyes comparatively large. 



1. Scutellerldae 



2. Cydnldae. . 



3. Pentatomldae 



4. Coreldae. . 



5. Aradidae. . 



6. Meidldae. . 



7. Lygaeldae . 



8. Pyrrhocorldae 



9. Tlngitldae. 



10. Enlcocephalldae 



11. Phymatldae. 



12. Reduvlidae. 



15. Hebrldae. . 



14. Mesovellidae 



15. '.:abidae . . 



16. Cimicidae . 



17. Anthocoridae 



18. Termatophylldae 



19. .'-nridae . . . 



20. Isometopldae. 



21. Dlpsocorldae. 



22. Schizopterldae 



23. Hydrom.etridae 



24. Gerrldae. . 



25. Vellldae. . 



26. Saldldae. . 



27. Ilotonectldae 



28. I'aucorldae. 



Some plant eating, others 

 Destructive, plant- 



. . Eyes vestigial or wanting; on domestic and v/lld 

 anlm.als. 



XVII Order HEMIPTERA (The True Bugs) 



''(Catalogue of Hemlptera, Van Duzee) 



(7) The Shield-backed Bugs. Turtle-shaped, on 

 plants. 



(13) The 'u'egro-bugs and Burrowing Bugs. Black or 

 dark brown. 



(47) The St Ink-bugs, 

 predacious. 



(24) The Squash-bug Family, 

 eating. 



(10) The Flat bugs. Dark, much flattened; under 

 bark. 



(3) The Stilt bugs. Very slim, long slender legs; 

 plant feeders. 



(54) The Chinch-bug Family. Live on plants. 



(0) The Cotton Stalner Fardly. Plant feeders. 



(32) The Lace -bugs. Easily told by gauzy v;lngs. 



(2) The Unique-headed Bugs. Small fcur.lly; pre- 

 dacious, 



(2) The Ambush-bugs. Hide in flowers to catch bees 

 and files. 



(18) The Assassin bugs. Predacious on Insects and 

 higher animals. 



(3) Small plump bodies. 



(2) Very sm.all family of small Insects. 



(11) The ::abids.. Predacious; found on plants; slim 

 bodies. 



(3) The Bed 3uf:;s. Parasitic on m.an and birds. 



(10) The Flov'er Bugs. Small, on trees, flowers, 

 etc. 



(1) Seldom, seen in Iowa. 

 (250) The Plant-bugs. Suck Juices of plants. 



(1) Very sm.all and rare. 

 (0) rot knovm in Iowa. 

 (0) i:ot I'jiov.Ti in Iowa. 



(2) The water-measurers. 

 (16) The water-striders. 



(6) The Broad-shouldered Water-striders. 

 surface of water; predacious. 



(9) The Shore-bugs. On damp soil; predacious. 



(7) The Back-swimmers. Boat shaped, black and 



Very slender, predacious. 

 Predacious; on water. 

 On the 



white. 



(2) The Creeping Water-bugs, 

 carnivorous. 



Oval, flat bodied: 



12^ 



