518 



PROCEEDINGS OF THE NATIONAL MUSEUM 



E. boUeri Riley 



E. brevivena Bugbee 

 E. bromi (Howard) 



E. calcarea Bugbee 



E. calif ornica Ashmead 



E. calycis Bugbee 

 E. celtigalla Bugbee 

 E. cleri Ashmead 



E. conica Provancher 



E. contractura Bugbee 

 E. crassa Bugbee 



E. crassineura Ashmead 

 E. diastrophi Walsh 



E. discordans Bugbee 



E. dorcaschemae Ashmead 



E. eragrostidis (Howard) 



E. flavicrus Bugbee 

 E. flavicrurensa Bugbee 

 E. flavovultus Bugbee 

 E. fossae Bugbee 



E. furva Bugbee 

 E. fusca Bugbee 



E. gigantea Walsh 



Gnorimoschema gallaesolidaginis (Riley) 

 Eurosta solidaginis Fitch 

 Tyloderma foveolatum Say 

 Disholcaspis quercus-globulus (Fitch) 

 Phytophagous in stems of Bromus ciliatus, 



Muhlenbergia sylvatica, and timothy. 

 Diplolepis bilolor (Harris) 



D. variabilis (Bassett) 

 Callirhyiis pomiformis (Ashmead) 

 Andricus californicus Ashmead 

 Disholcaspis corallina (Bassett) 

 D. plumbella Kinsey 

 D. washingtonensis (Gillette) 

 Phytophagous in buds of Pinus banksiana 

 Phytophaga celtiphylla Felt 

 Dendroctonus frontalis Zimmermann 

 D. monticolae Hopkins 

 Ips oregoni (EichhofT) 

 Pissodes strobi (Peck) 

 Dendroctonus frontalis Zimmermann 

 D. brevicomis LeConte 

 Pissodes strobi (Peck) 

 Cylindrocopturus longulus (LeConte) 

 Phloeosinus dentatus (Say) 

 Stephenoderes dissimilis (Zimmermann) 

 Melanagromyza shineri (Giraud) 

 Trypeta { = Callachna) gibba (Loew) 

 T. { — Aciurina) notata (Coquilett) 

 Dipterous galls on Ambrosia species 

 Scolytus rugulosus Ratzeburg 

 Magdalis armicollis Say 

 Diastrophus cuscutoeformis (Osten Sacken) 

 D. nebulosus (Osten Sacken) 



D. niger Bassett 

 Callachna gibba (Loew) 

 Diplolepis variabilis (Bassett) 

 Periclistus pirata (Osten Sacken) 

 Synophromorpha ( = Periclistus) sylvestris 



(Osten Sacken) 

 Dorcaschema alternatum (Say) 

 Phlocotribus frontalis (Oliver) 

 Phytophagous in stems of Eragrostis 



poaeoides and Agrostis alba 

 Galls on Nyssa sylvatica 

 Diplolepis polita (Ashmead) var. 

 Pachypsylla venusta Osten Sacken 

 Euura pacifica (Marlatt) 



E. resinicola (Marlatt) 

 Disholcaspis washingtonensis (Gillette) 

 Tachypterellus quadrigibbus (Say) 



T. q. viagnus List 

 T. consors Dietz 

 Eurosta solidaginis Fitch 



