INSECTS AFFECTING PARK AND WOODLAND TREES 



4'3 



the larvae; increasing;- ihc ilow to such an cxtcnl as to seriously weaken a tree 



unable to stand a severe drain. 



Bibliography 



l8So ■ ComstOCk, J. H. V S. Drpl Ayri( . Rup'l 1.S79, p. 256-57 

 1890 Packard, A. S. U. s. Knt. Cm. 5th Rcp't, \<. 797-9S 

 1903 Eckel, L. S. I'.nt. News, 14:279-84 



LeConte's sawfly 

 Lopliyriis Icconlci I'itch 

 Dirtv yellowish, red-hcadcil, hia< k spotted < att-rpilLirs feed in clusters on the outer 

 branches of pines from uliicli tliey strij) the leaves. 



This species is a rather common one althoui^h as a rule it is not 

 injurious. It was first hrouoht to notice l)\- 1 )r Asa I-"itch who character- 

 ized it in I 8^7, and described its work and the adult fcniale as follows: 



When nearly matured th(;se worms are so large that the end of a siniL^de 

 leaf of the pine probably furnishes them a very insufficient mouthful, hence 

 two worms often unite, standing; face 

 to face, and thus hoKl the five leaves 

 which ijrow from each shealh im the 

 white pine pressed tOi.(cther in a bundle 

 as they eat it, commencino- at the tip 

 and t^radually stepjHiv^ backwards as 

 the leaves become shortci". It is only 

 the old leaves of the previous year's 

 growth which these worms consume, 

 the outer end of the limb; hence they injure 

 thev would were they to stri]) the limljs th 



Fi.c- 93 T.ophyrus Icconlei, enlarged (oriKin.Tl> 



ne\-er touching the new ones at 

 the tree much less than 

 ev invade of the whole of 



their foliaoe. At least two brooils of these worms appear ai.nually. the 

 one in July, the other in September and October, the latter often remaining 

 on the trees after the frosty nights have occurretl. Having finished 

 feeding, they leave the tree and inclose themselves in cocoons under fallen 

 leavesOr oiIhm" shelter on the surface of the ground, in which they remain 

 during their pupa state. 



The female. LtMigth, ..^8 inch to the tij) of the alxlomen, and .48 inch 

 to the end of the wings. It may at once ije distinguished from all our 

 other described species by the joints of its antennae, which are 21 in num- 

 ber It is shining dull, tawny yellow, with the antennae black, and also the 

 al)domen and base of the thorax. The untlerside is jjaler yellow, with two 

 broad, black stripes on the abilomen. The wings are smoky hyaline, their 

 veins black. Captured the middle of May. 



