INSECTS AFFECTING I'AKK AND WOOD). AND TREES 745 



Wll.l.OW (.AI.I.S 



Twig galls 

 Euura orbitalis Noit., enlarged, lateral, monothalaiumis tnul ^'all. Knt. Soc. Plula. 



I'roc. (>: 2--,f.> . 



Euura nodus W.iUli, smootli twi^' enlargement, one fourth to twice normal diam- 

 eter. Knt. Soc. I'iiila. I'roc. 6:253 



Euura ovum WaNli, oval, monothalamous twig gall, on one sule. ImU. hoc. I liil.i. 



I'roc. 6: 2>i , ■ 1 • • 1 



Cecidomyia cornuta W.ilsh, larva bores stems affected by C. b r a s s i c <> i d e s. 



ImU. Soc. I'hila. I'roc. 3:625 



Cecidomyia coryioides Walsh, large, monothalamous, apical: resembling a Uuncn 

 uf ha/.elnuts. Rnt. Soc. I'hila. Proc. 3 : 588 



Cecidomyia hordeoides Walsh, resembles four rowed barley, twig not enlarged as 

 ,„ I " t r i t i c o i d e s. ImU. Soc. I'hila. I'roc. 3 : 599 



Cecidomyia nodulus Walsh, smaller, though similar t.. C". b a t a t u s. hut mono- 

 thalamous. I'.nt. Soc. I'hila. I'roc. 3 : 599 ,,. , , , 



Cecidomyia triticoides Walsh, polythalamous. woody, resembling a wheat head, 

 ^_^ I'^in. Mnt. Soc. I'hila. I'roc. 3:598 



Rhabdophaga batatas Walsh, irregular polythalamous swelling, l-.nt. hoc. 1 una. 



I'll >c. ^ : '« )i ... 



Rhabdophaga rhodoides W'.ilsh, monothalamous roselil<e galls at tip of twigs. 



l-:iU. Soc. I'hihi. I'roc. 3 : 586 , ■ , 1 11 



Rhabdophaga siliqua Walsh, monothalamous solitary oval, ;ipical woody gall, 



yi-l in. Ins. Galls Ind. p. 840 



Leaf galls 

 Pontania borealis .Marlt., solitary, smooth, reddish, pyriform, '^ in., ^( below. 



Dyar. N. ^^ Mnt. Soc. Jour. 6 : 1 2 1 . 



Pontania consors Marlt.. gregarious, hairx, spheric, near leaf base, V, 111. I)\ar. 



N. \". i:nt. Soc. Jour. 6: 121 , . r i^ x- \- 



Pontania gracilis Marlt., green, spheric gall, equally on both surfaces. Dyar. .\. \. 



Knt. Soc. bnir. 5 : 197 v \- I' t 



Pontania terminalis M.irlt., green swelling on upi)er surl.ice. IJyar. .\. ^. i.nt. 



Soc. jour. ^ ; 24 -III 



Rhabdophaga brassicoides Walsh, bunches of oval, monothalamous, se.ssile galls, 



=^ 2'^ in. l''.nt. Soc. I'hila. Free. 3 : 577 , . . 



Rhabdophaga gnaphaloides Walsh, apical, solitary, subsphenc.d, >4-V.. in. l-nt. 



Soc. I'hila. I'roc. ; ; ^•'^ 1 , . 



Rhabdophaga strobiliscus Walsh, pine cone-shaped gall. Knt. Soc. 1 liila. 1 roc. 



Cecidomyia verruca W.dsh, small, monothalamous, irregularly spheric gall, l-.nt. 



.Soc. I'hila. i'roc. ', : 606 , , . , , i> 



Phylloxera salicicola I'erg., woolly aphids in bark crevices and leal buds. iJaveii- 



port. .\cail. Sci. I'roc. 9:267 

 Eriophyes salicicola (larm., longitudinal leaf folds. Pack. p. 595 

 Acarus aenigma W ,dsh, polythalamous, irregular, spheroidal, almost sessde mass ot 



bud or leaf tissues, '^"1' 10 in- Knt. Soc. I'hila. I'roc. 3:608 

 Acarus semen Walsh, small, roughened, greenish yellow, mostly on upper surtace. 



Ent. Soc. Fhila. I'roc. 3:606 



