476 Hymenoptera in America North of Mexico 



The species of this small New World genus are parasites of Polist eft larvae. 



Revision: Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 55-57. 

 fulvus (Cresson). N. Y. s. to Fla., w. to s. B. C. and Calif.; Cuba, Mexico. Host: Polistes 

 auniilaris (L.), P. apachiis Sauss., P. Carolina (L.), P. cubensis Lep., P.fuscatiis 

 fuficatus (F.). 

 Mesostenua^ fulvun Cresson, 1864. Ent. Soc. Phila., Proc. 3: 316. 6. 

 Mesosfenns arvalin Cresson, 1872. Amer. Ent. Soc, Trans. 4: 163. 9. 

 [Meaostenux] Menostenuti collarit^ Cresson, 1873. Acad. Nat. Sci. Phila., Proc. 25: 162. 3. 



Taxonomy: Townes and Townes, 1966. Amer. Ent. Inst., Mem. 8: 96 (syn.). 



Biology: Dow, 1932. Psyche 39: 16. —Gaul, 1940. Canad. Ent. 70: 240-242. — Rau, 1941. Ent. 

 Soc. Amer., Ann. 34: 364. 

 stupidus (Cresson). N. C. s. to Fla., w. to s. 111. and Tex.; West Indies and Mexico s. to South 

 America; Hawaii. Host: Polintes annularis (L.), P. canadensis (L.), P. exclanians Vier., 

 P. fuscatits fuscatus (F.). 

 [Mesostenus] Mesostenus stupidus Cresson, 1873. Acad. Nat. Sci. Phila., Proc. 25: 162. 6. 

 Pachysonia alhopictuni Szepligeti, 1916. Mus. Nat. Hungarici, Ann. 14: 290. 9. 

 Polistiphaga zonata Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 56. 9. 



SUBTRIBE CERATOCRYPTINA 

 Of the 18 genera, 16 are confined to the Old World tropics. 



Chaviula Townes, 1962. hi Townes and Townes, U. S. Natl. Mus. Bui. 216 (pt. 3): 430. 



Type-species: [Mesostenus] Polycrytus reliquus Cresson. Monotypic and orig. desig. 



This genus includes the type-species and an undescribed species from Venezuela. 



reliqua (Cresson). Southwestern La.; Mexico. The female is unknown. 



[Mesostenus] Polycrytus reliquus Cresson, 1873. Acad. Nat. Sci. Phila., Proc. 25: 146. 6. 



SUBTRIBE OSPRYNCHOTINA 



Most of the nine genera are tropical, and the hosts are larvae of wasps which make nests en- 

 tirely or partly of mud. 



Genus MESSATOPORUS Cushman 



Messatopoms Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 8. 

 Type-species: Mesostenus discoidalis Cresson. Orig. desig. 



This is a rather large genus of the New World; most of the species are Neotropic. 



Revision: Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 8-13. 

 compressicornis Cushman. Conn. s. to Fla., w. to Ohio and Ala. Host: Ancistrocenis 



tuberculocephalus sufterianus (Sauss.), Trypargilum collinum ntbrocinctuni (Pack.). In 

 their tribal revision, Townes and Townes (1962) said that co7)i press icoryiis may prove to 

 be a subspecies of M. arcuatus (Cresson) which is known from Mexico. 

 Messatopoms co)»pressicornis Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 12. <J, 9. 

 Messatopoms major Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 13. 9. 

 discoidalis (Cresson). Que. s. to S. C, w. to Minn, and Tex. Host: Auplopus nielli pes niellipes 

 (Say), Plianagenia boitibycina (Cr.). 

 Mesostenus fermm-equinum Walsh and Riley, 1869. Amer. Ent. 1: 133. Sex not indicated. 



Preocc. by Brulle, 1846. 

 Mesostenus discoidalis Cresson, 1872. Amer. Ent. Soc, Trans. 4: 162. 9. 

 Mesostenus jocosus Provancher, 1874. Nat. Canad. 6: 300. 9. 



rufiventris Cushman. Que. w. to s. B. C, s. to Fla., s. Tex., Ariz., and n. Calif. Host: Auplopus 

 sp., Plianagenia bonibycina (Cr.)?, Trypoxylon sp. 

 Messatopoms rufiventris Cushman, 1929. U. S. Natl. Mus., Proc. 74 (16): 11. 9. 



