410 Hymenoptera in America North of Mexico 



urbanus (Brues). N. Y. 



Pezoniachufi itrbaynis Brues, 1910. Wis. Nat. Hist. Soc, Bui. 8: 70. i. 

 virginiensis (Aslimead), n. comb. Va., Arl<. Ecology: Associated witii Acrobasis indigenella 

 (Zell.). This species had been incorrectly placed in the genus Mastnts since 1944. 



Hemitelefi virginiensis Ashmead, 1890 (1889). U. S. Natl. Mus., Proc. 12: 404. 9. 

 wheeleri (Brues). 111. 



Pezowachus wheeleri Brues, 1903. Amer. Ent. Soc, Trans. 29: 123. 9. 

 yakutatensis (Ashmead). Alaska. 



Atractodes yakutatensis Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 169. 6. 



Genus AGASTHENES Foerster 



Antlienoptera Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 175. 



Type-species: Heviiteles stagnalis Thomson. Included and desig. by Hellen, 1967. 

 Agasthenes Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 178. 



Type-species: Heviiteles varitarsus Gravenhorst. Included and desig. by Perkins, 

 1962. 

 Arachnoleter Cushman, 1924. U. S. Natl. Mus., Proc. 64 (4): 2. 



Type-species: Arachnoleter swezeyi Cushman. Monotypic and orig. desig. 



Townes (1970) says that there are two undescribed Nearctic species. In the U. S. Natl. Muse- 

 um collection there are specimens of one of them from Mich., Ind., and Minn.; this species 

 parasitizes spider eggs, as does A. swezeyi (Cushman), which is known from India, Malaya, the 

 Philippines, and Hawaii. 



Taxonomy: Townes, 1970 (1969). Amer. Ent. Inst., Mem. 12: 57. 



SUBTRIBE MASTRINA 

 Genus PYGOCRYPTUS Roman 



Pygocryptus Roman, 1925 (1924). Arkiv for Zool. 17 A (4): 9. 



Type-species: Phygadeuon grandis Thomson. Monotypic and orig. desig. 



Revision: Torgerson, 1974. Canad. Ent. 106: 889-896 (Holarctic spp.). 

 coryopsis Torgerson. Cahf. 



Pygocryptus coryopsis Torgerson, 1974. Canad. Ent. 106: 895. 9. 

 cruentus Torgerson, n. status. Alta., B. C. 



Pygocryptus echthroides cruentus Torgerson, 1974. Canad. Ent. 106: 893. 9. 

 echthroides echthroides (Townes). Que., Mich., Alaska, B. C, Oreg., Calif. 



Cryptus brevicornis Provancher, 1886. Addit. Corr. Faune Ent. Canada Hym., p. 67. 9. 



Preocc. by Gravenhorst, 1829 and Provancher, 1875. 

 Cryptus brevicinctus (!) Provancher, 1889. Addit. Corr. Faune Ent. Canada Hym., p. 452 



(index). 

 Amydraulax echthroides Townes, 1944. Amer. Ent. Soc, Mem. 11: 174. N. name for C. 

 brevicornis Provancher. 

 echthroides oribasus Torgerson. Colo., Ariz. 



Pygocryptus echthroides oribasus Torgerson, 1974. Canad. Ent. 106: 893. 6, 9. 

 erugatus Torgerson. Que. s. to N. C, w. to Mich. 



Pygocryptus erugatus Torgerson, 1974. Canad. Ent. 106: 894. d, 9. 



exilis Torgerson. Calif. 



Pygocryptus exilis Torgerson, 1974. Canad. Ent. 106: 896. 6. 



exochus Torgerson. Que., N. Y., Md., S. C, Mich. 



Pygocryptus exochus Torgerson, 1974. Canad. Ent. 106: 895. 6,9. 



Genus MASTRUS Foerster 



Perosis Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 169. 



Type-species: Echthrus arniatus Gravenhorst. Desig. by Viereck, 1914 from two 

 species included by Schmiedeknecht, 1888. 



