146 NEW YORK STATE MUSEUM 



accomiJanyin>r figure. The siMiicd soklier bui^^ Podisus spinosus 

 Dall, and the allied E u s c h i s t u s servus Say prey on the caterpillars. 

 The larvae of a Carahiil beetle P 1 o c h i o n u s t i m i d u s Hald., have been 

 observed in Missouri within the nests in considerable numbers feeding on 

 the caterpillars. C a 1 o s o m a s c r u t a t o r I'abr., dragonllies and a species 

 of robber lly prey on tlie moths. Th(- pra\ing mantis, S t a g ni o m a n t i s 

 Carolina Linn., and the wheel bug, P r i o n i d u s c r i s t'a t u s Linn., are 

 two forms which attack caterpillars in the Southern States. A fungus, 

 Empusa grylli, has been recorded as very destructive to this pest in 

 Kentuck}' in certain years. 



Remedies. The habit the caterpillars have of fec-ding under a large 

 web renders it comparatively easy to cut off the infested ])()rtions of the 

 limb and kill the pests by crushing or l)urning, and where the insect is pres- 

 ent in small numbers, this is [jrobably the most satisfactory method. The 

 pests can also be fought by burning them with a torch while the web is still 

 on the tree, but many of the caterpillars may escape destruction, and unless 

 the work is very cautiously done, the fire may injure the tree seriously. 

 Spraying with arsenical poisons about the time the caterpillars appear is 

 most satisfactory where apparatus for such work is at hand. 



Bibliography 

 1SS7 Riley, C. V. U. S. llep't .\gric. Div. Ent. Bui. 10, p. 3.3-53 

 1895 Howard, L. O. U. S. Dep't Agric. Year Book, \^. 375-76 

 i.Sijfj Felt, E. P. Fish, (ianic and For. Com. 5th Rep't, p. 363-68 



Elm leaf beetle 



(ialcritcclla litlcola Mullen 



Irrc'^ular circular holes occurring in the leaves of elms, particularly of the luiropean 



species, followed liy skeletonizing of the under surface of the foliage by the grubs and 



subsequent browning of the remaining tissues, are very characteristic features of this 



insect's presence. 



This imported insect is in all proliability responsible for more ruined 

 elm trees in the Hudson river valley than all other destructive agencies 

 combined. The above is a sweeping assertion, but a careful examination <if 



