ICHNEUMONIDAE 187 



Genus SYRPHOCTONUS Foerster, pp. 350-351, Sup. 1, p. 57 



Homotropus Foerster. Remove from syn. A valid genus. 



agilis (Cresson). Syn. of flavolineatus (Gravenhorst) . 



alaskettsis (Ashmead). Transf. to Homotropus Thomson. 



albopictus (Davis). Transf. to Homotropus Thomson and reduced to subsp. 

 rank. 



belangerii (Provancher). Transf. to Homotropus Thomson. 



*citropectoralis (Schmiedeknecht) . N. Y., Pa., Ohio, Mich., B. C, Alaska; 

 Europe. 

 Homocidus citropecioralis Schmiedeknecht, 1926. Opusc. Ichn. 5 (43) : 



3389,3412. $. 



compressiventris (Cresson). Transf. to Homotropus Thomson as syn. of sig- 

 natus (Gravenhorst). 



cressonii Davis. Transf. to Homotropus Thomson. 



cultriformis (Davis). Transf. to Homotropus Thomson. 



elegans war. nigritarsus (Gravenhorst). Delete from Catalog. 



*flavolineatus (Gravenhorst). Ti-anscont. in Huds., Canad., Transit, and U. 



Austr. zones. Europe, Asia. Hosts: Baccha clavata (F.), Meta- 



syrphus lapponicus (Zett.). 

 Bassus flavolineatus Gravenhorst, 1829. Ichn. Europeaea 3: 337. ?. 

 Syrphoctonus agilis (Cresson) (syn. teste Dasch, 1964, p. 201). 



foutsi Cushman. Transf. to Campocraspedon Uchida. 



gillettii Davis. Transf. to Tymmophorus Schmiedeknecht. 



laevis (Brues). Transf. to Homotropus Thomson. 



maculifrons (Cresson). Transf. to Homotropus Thomson. 



melanogaster (Holmgren). Transf. to Homotropus Thomson. 



minimus (Cresson). Transf. to Homotropus Thomson. 



pacificus (Cresson). Transf. to Homotropus Thomson. 



pallipennis (Provancher). Transf. to Homotropus Thomson as syn. of pal- 

 lipes (Gravenhorst). 



*patei Dasch. Colo., Alaska. 



Syrphoctonus patei Dasch, 1964. Amer. Ent. Inst. Mem. 3: 201, 207. ?. 



pectoralis (Provancher). Transf. to Homotropus Thomson. 



pleuralis (Cresson). Transf. to Homotropus Thomson. 



Bassus syrphicola Ashmead. Transf. to Homotropus Thomson as valid 

 subsp. of pleuralis. 



robustus Davis. Transf. to Homotropus Thomson. 



vertebratus Cushman. Transf. to Xestopelta Dasch. 



*Genus XESTOPELTA Dasch 



Xestopelta Dasch, 1964. Amer. Ent. Inst. Mem. 3: 8, 208. 



Type: Syrphoctonus vertebratus Cushman. Orig. desig. 



Place on page 351 after Syrphoctonus Foerster. 



vertebrata (Cushman). Vt., N. W. T., B. C, Wash. Transf. from Syrphoc- 

 tonus Foerster, p. 351 (teste Dasch, 1964, p. 209). 

 Himertosoma quinquecinctum Ashmead Ms., in Slosson, 1902. Syn. 

 wrongly placed at top of p. 58 in Sup. 1. Place after Syrphoc- 

 tonus bilineatus Ashmead Ms, in Slosson, 1900. 



Genus PHTHORIMA Foerster, pp. 351-352, Sup. 1, p. 58 



Phthorima Foerster. In type citation, change "Desig. by Viereck" to: 

 Inch by Thomson, 1890 [only one species]. 



