214 Hymenoptera in America North of Mexico 



Tribe DACNUSINI 



Griffiths (see references below) has studied the European species but also made extensive 

 revisions of the World genera. Most of the described North American species are placed in the 

 genera below according to his concepts 



Hosts are restricted to the dipterous family Agromyzidae. 



Taxonomy: Griffiths, 1964. Beitr. z. Ent. 14: 823-913 (includes diagnoses and key to World 

 genera). —Griffiths, 1966. Beitr. z. Ent. 16: 551-605, 775-951. —Griffiths, 1967. Beitr. z. 

 Ent. 17: 654-696. —Griffiths, 1968. Beitr. z. Ent. 18: 5-152. 



Biology: Griffiths, 1964. Beitr. z. Ent. 14: 823-913. —Griffiths, 1966. Beitr. z. Ent. 16: 551-605, 

 775-951. —Griffiths, 1967. Beitr. z. Ent. 17: 654-696. —Griffiths, 1968. Beitr. z. Ent. 18: 

 5-152. 



Genus CHAENUSA Haliday 



Alysia subg. Chaenusa Haliday, 1839. Hym. Brit., fasc. 2, p. 19. 



Type-species: Bracon conjugens Nees. Monotypic. 

 Chorebidea Viereck, 1914. U. S. Natl. Mus., Bui. 83: 32. 



Type-species: Alysia (Chorebus) nereidum Haliday. Orig. desig. 

 Chorebidea Nixon, 1943. Ent. Monthly Mag. 79: 28. Preocc. by Viereck, 1914. 



Type-species: Alysia (Chorebus) naiadum Haliday. Orig. desig. 

 Ckorebidella Riegel, 1950. Ent. News 61: 125. 



Type-species: Chorebidella bergi Riegel. Orig. desig. 



Taxonomy: Griffiths, 1964. Beitr. z. Ent. 14: 847-848, 859 (generic syn. and diag.). 



— Shenefelt, 1974. Hym. Cat., part 11, p. 1030-1033 (cat. World spp.). 

 bergi (Riegel). Conn., N. Y., Mich., Minn., Kans. Host: Hydrellia ascita Cress., H. cruralis Coq. 



Chorebidella bergi Riegel, 1950. Ent. News 61: 128. 9, cJ. 

 quadriceps (Ashmead). N. Y. 



Brachystropha quadriceps Ashmead, 1901. N. Y. State Mus., Bui. 47: 587. 6. 



Genus CHOREBUS Haliday 



Chorebus Haliday, 1833. Ent. Mag. 1: 264. 



Type-species: Basstis affinis Nees. Desig. by Viereck, 1914. The type-species is in 

 the sense of Haliday 1833, not 1839. 

 Ametria Foerster, 1862. Naturh. Ver. Rheinlande, Verh. 19: 274. 



Type-species: Alysia {Dacnusa) uliginosa Haliday. Orig. desig. 

 Gyrocampa Foerster, 1862. Naturh. Ver. Rheinlande, Verh. 19: 276. 



Type-species: Bassus affinis Nees. Orig. desig. 

 Stiphrocera Foerster, 1862. Naturh. Ver. Rheinlande, Verh. 19: 276. 



Type-species: Stiphrocera nigricomis Foerster. Orig. desig. 

 Phaenolexis Foerster, 1862. Naturh. Ver. Rheinlande, Verh. 19: 276. 



Type-species: Alysia petiolata Nees. Orig. desig. 

 Etriptes Nixon, 1943. Ent. Monthly Mag. 79: 30. 



Type-species: Alysia (Dacnusa) talaris Haliday. Orig. desig. 

 Paragyrocampa Tobias, 1962. Akad. Nauk. U. S. S. R. Trudy Zool. Inst. 31: 119. 



Type-species: Paragyrocampa ophthalmica Tobias. Orig. desig. 



Taxonomy: Griffiths, 1964. Beitr. z. Ent. 14: 848-852, 859-860 (generic syn., diag.). —Griffiths, 

 1968. Beitr. z. Ent. 18: 113-136 (key to some Eur. spp.). —Shenefelt, 1974. Hym. Cat, part 

 11, p. 1033-1070 (cat. World spp.). 

 agromyzae (Gahan). Del., Ind. Host: Phytobia (Poemyza) angulata (Loew). 

 Dacnusa agromyzae Gahan, 1913. Canad. Ent. 45: 153. 9,6. 



alaskensis (Ashmead). Alaska. 



Gyrocampa alaskensis Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 242. 9. 

 aquaticus Muesebeck. Minn., Calif. Host: Hydrellia griseola (Fallen). 



Chorebus aquaticus Muesebeck, 1950. Ent. Soc. Wash., Proc. 52: 77. 9, 6. 



