358 Hymenoptera in America North of Mexico 



from coiling of the stalk; it serves to fasten the eggs within the puncture the female makes in 

 the skin of the host larva. According to Mason (1967), in species which parasitize sawflies, eclo- 

 sion from the egg does not occur until after the host has spun its cocoon. 



Taxonomy: Townes, 1969. Amer. Ent. Inst., Mem. 11: 143-193 (genera of world). 



Biology: Mason, 1967. Canad. Ent. 99: 376. 



Tribe PHYTODIETINI 



Members of this tribe are parasitic on larvae of Lepidoptera. The stalk of the egg is long, 

 slender, and loosely coiled; in newly deposited eggs the stalk is elastic, but later becomes rigid so 

 that its coiling serves to hold it firmly in the skin of the host. 



Townes (1969) preferred to group the numerous species of this tribe into two genera, each 

 with a number of subgenera. His use of more subgeneric than generic names seems to make the 

 classification of this tribe discordant with his classification of the rest of the subfamily. 



Genus PHYTODIETUS Gravenhorst 



This genus is divided into four subgenera, two of which have North American species. The 

 North American species are currently being revised by Dr. C. C. Loan, and publication of his 

 revision may precede the appearance of this catalog. 



Revision: Rohwer, 1920. U. S. Natl. Mus., Proc. 57: 460-468. 



Genus PHYTODIETUS subgenus NEUCHORUS Uchida 



Neuchorus Uchida, 1931. Insecta Matsumurana 5: 143. 



Type-species: Neuchorus longicauda Uchida. Monotypic and orig. desig. 

 Doratistes Seyrig, 1932. Acad. Malgache, Mem. 11: 27. Described as a subgenus of 

 Phytodietus but treated nomenclaturally as a genus. 



Type-species: Doratistes absyrtinus Seyrig. Orig. desig. 



Taxonomy: Krebs, 1969. Canad. Ent. 101: 548-549 (key to Nearctic spp.). 

 rufipes pulcherrimus (Cresson). Atlantic to Cont. Divide in Transit, and U. Aust. Zones. Host: 

 Loxostege rantalis (Gn.), L. sticticalis (L.), Ostrinia ohliteralis (Wlk.), Phlyctaenia 

 coronata tertialis (Gn.). P. (N.) nifipes nifipes Holmgren is European. 



Mesoleptus pulcherrimus Cresson, 1868. Amer. Ent. Soc, Trans. 2: 101. 6. 



Phytodietus distinctus Cresson, 1870. Amer. Ent. Soc, Trans. 3: 166. 9 . 



Phytodietus zonatus Provancher, 1874. Nat. Canad. 6: 79. 9. 



Mesostenus nobilis Provancher, 1882. Nat. Canad. 13: 363. 9 . 



Mesoleius telarius Provancher, 1886. Addit. Corr. Faune Ent. Canada Hym., p. 106. 9. 



Ctenopelma pulchra Ashmead, 1896. Amer. Ent. Soc, Trans. 23: 198. 6. 



Taxonomy: Townes, 1969. Amer. Ent. Inst, Mem. 11: 147. 



Biology: Balduf, 1929. Ohio Jour. Sci. 29: 233-234. 

 rutilus Krebs. Md., N. Y., Mich., Ky. 



Phytodietus (Neuchorus) rutilus Krebs, 1969. Canad. Ent. 101: 549. cJ, 9. 



Genus PHYTODIETUS Subgenus PHYTODIETUS Gravenhorst 



Phytodietus Gravenhorst, 1829. Ichn. Europaea 2: 928. 



Type-species: Phytodietus astutus Gravenhorst. Desig. by Westwood, 1840. 



Phytodiaetus Agassiz, 1846. Nomencl. Zool., Index Univ., p. 291. Emend. 

 burgessi (Cresson). Atlantic to 100° W. in Transit, and U. Austr. Zones. 



Tryphon Burgessi Cresson, 1868. Amer. Ent. Soc, Trans. 2: 105. 6. 



Tryphon biirgessii Dalla Torre, 1901. Cat. Hym., v. 3, p. 293. Emend. 



Phytodietus plesia Rohwer, 1920. U. S. Natl. Mus., Proc. 57: 465. 9. 

 californicus Cresson. Colo., Wash., Calif. 



Phytodietus californicus Cresson, 1879 (1878). Acad. Nat. Sci. Phila., Proc. 30: 380. 9. 



clypearius Ashmead. Wyo., Alaska. 



Phytodietus clypearius Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 195. 6,9. 



