792 Hymenoptera in America North of Mexico 



Genus GASTRANCISTRUS Westwood 



Gastraneistrus Westwood, 1833. London, Edinb. and Dublin Phil. Mag. and Jour. Sci. (3) 2: 

 444. 



Type-species: Gastraneistrus vaga^is Westwood. Monotypic. 

 Glyphe Walker, 1834. Ent. Mag. 2: 168, 170. 



Type-species: Glyphe autumnalis Walker. Monotypic. 

 Tridymus Ratzeburg, 1848. Ichn. d. Forstins., v. 2, p. 183. 



Type-species: Tridymus aphidum Ratzeburg. Desig. by Ashmead, 1904, p. 273. 

 Ashmead, 1904, p. 392, Desig. Pteromalus salicis Nees, but designation on p. 273 

 has priority. 

 Tripedias Foerster, 1856. Hym. Stud., v. 2, p. 60. No species. 



Type-species: Gastraneistrus tripedias Boucek. Desig. by Boucek, 1964. 

 Trydymus Girault, 1917. Psyche 24: 98. Misspelling, often used. 



Revision: Graham, 1969. Brit. Mus. (Nat. Hist.) Ent., Bui. Sup. 16: 270-327. (Tridymus 

 aphidum Ratzeburg an unfortunate choice for type-species of Tridymus; Pteroynalus 

 salicis Nees might be more satisfactory; application may be made to Internat. Comn. to 

 change type-species). 



Taxonomy: Walker, 1846. List Hym. Brit. Mus., Chalcid., v. 1, p. 25 (syn.). —Boucek, 1964. 

 Ceskoslov. Spolec. Ent. Casopis 61: 259 (syn.). 

 aeneicornis (Girault), n. comb. N. Y. Ecology: Associated with plum tree. 



Trydymus aeneieomis Girault, 1917. Psyche 24: 98. 9. 

 americensis (Girault). N. comb. Mich. Ecology: Reared from cecidomyiid stem gall on Salix. 

 Trydymus americensis Girault, 1917. Descr. Hym. Chalcidoid. Variorum cum Observ. Ill, 

 p. 8. 9. 

 aphidis (Girault), n. comb. Conn., N. Y., Ark. Ecology: Reared from leaf or tendril galls on 

 grape. Host: Lasioptera vitis 0. S. 

 Trydymus aphidis Girault, 1917. U. S. Natl. Mus., Proc. 53: 450. 9. 

 aureipes (Girault), n. comb. Fla. 



Trydymus aureipes Girault, 1917. U. S. Natl. Mus., Proc. 53: 449. 9. 

 biguttatipennis (Girault), n. comb. Conn., Fla. 



Trydymus biguttatipennis Girault, 1917. U. S. Natl. Mus., Proc. 53: 449. 9. 

 clavicornis (Girault), n. combj Sask. 



Trydymus clavicornis Girault, 1917. Descr. Hym. Chalcidoid. Variorum cum Observ. V, p. 

 15. 9. 



Taxonomy: Girault, 1920. U. S. Natl. Mus., Proc. 58: 214 (redescription as "N. sp." on same 

 specimens used in 1917). 



gargantua (Girault), n. comb. N. H., Conn., N. Y., Mich., Minn. Ecology: Reared from gall on 

 Salix. 

 Trydymus gargantua Girault, 1917. Psyche 24: 98. 9. 

 metallicus (Ashmead), n. comb. N. Y., N. J., Kans. Ecology: Reared from twig galls of basket 

 willow, Salix purpurea. Host: Rhabdophaga salicis Schr. This sp. may be a synonym of 

 Gastraneistrus salicis (Nees). 

 Tridymus metallicus Ashmead, 1888. Kans. Agr. Expt. Sta., Bui. 3: App. p. V. 9, 6. 

 nigriclavus (Girault), n. comb. Md. 



Trydyynus nigriclavus Girault, 1917. Chalcidoidea Nova Marilandensis II, p. 2. 9. 

 oblongus (Provancher), n. comb. Que. 



Se^niotelius oblongus Provancher, 1881. Nat. Canad. 12: 295. 9. 



Taxonomy: Burks, 1964 (1963). Canad. Ent. 95: 1262 (type). 

 poloni (Girault), n. comb. N. H. 



Trydyinus poloni Girault, 1917. Psyche 24: 98. 9. 

 robiniaecola (Ashmead), n. comb. Va., W. Va. 



Tridymus robiniaecola Ashmead, 1894. Amer. Ent. Soc, Trans. 21: 334. 9, i. 



