GUESTS AND PARASITES OF HALICTUS. 2/ 



In conclusion we may present the following diagram showing 

 the interrelationships of the most important of the insects we 

 have observed. For Halictiis it is indeed a "whirlpool of life" 

 with only too many vortices centered upon its unfortunate self 



Mutilla 



f 

 Myodites '*?-^ y ^S-- Phora 



Philanthus s-s- HALICTUS -<r-s Stethopathus 



Metopia -^if^ a k "^Sss; Ceratopogon ""^^^is Polyxenes -«— s Smilia 



j , ft t A f ^^ 



III "fc Baeocera Solenopsis ||| | I Y Aleyrodes 



>i Proctotrypidse f|j W Thysanura 



Mutilla %„^ ^s-^ 



jg,^^^ Pompilus s > Spiders ^^j,^^ 



^^^^ Sphex ""^S^g; ^^^ Sciara 



Chrysis 



