476 HYMENOPTERA OP AMERICA NORTH OP MEXICO 



Stelis (Pavostelis) ater Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bull. 

 152: 39. ?. 



diversicolor Crawford. Tenn. On flowers of Rubus. 



STELIS subgenus CHELYNIA Provancher, pp. 1148-1149 

 ( = C/ie//n/a subgenus Che//n/a Provancher of Catalog) 



This taxon and the subgenera included under it in the Catalog are consid- 

 ered to be subgenera of Stelis (teste Mitchell, 1962, loc. cit. supra, p. 36). 



birkmanni Cockerell. Possibly a syn. of labiata (Provancher). 



foederalis Smith. N. B. to Minn., south to Ga. and Colo. On flowers of 

 Chrysanthemum. 



labiata (Provancher). Que. to Wis., south to N. C. On flowers of Ranunculus 

 and Rubus. Hosts: Hoplitis (Alcidamea) producta producta 

 (Cr.),H. (A.) pilosifrons (Cr.) and Robertsonella simplex (Cr.). 

 tStelis (Microstelis) birkmanni Cockerell (syn. questionably by Mitchell, 

 1962, loc. cit. supra, p. 40). 



*inichiganensis Mitchell. Mich. (Luce Co.). 



Stelis michiganensis Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bull. 

 152: 45. ?. 



nitida Cresson. On flowers of Chrysanthemum. 



*semirubra reducta Snelling. Calif. (Tuolumne and Mariposa counties). On 

 flowers of Cryptantha. 

 Stelis (Chelynia) semirubra reducta Snelling, 1962. Pan-Pacific Ent. 38: 

 227. 9, $. 



STELIS subgenus MELANOSTELIS Ashmeod, p. 1149 



rubi Cockerell. B. C. 



STELIS subgenus STELIDIUM Robertson, pp. 1149-1150 



trypetina (Robertson). Va. On flowers of Aster, Erigeron, Pycnanthemum, 

 Rudbeckia and Solidago. 



Unrecognized Species of Stelis not Placed as to Subgenus 



*nigrita (Fabricius). "Habitat in America." 



Andrena nigrita Fabricius, 1775. Systema Ent., p. 377. 



Genus DIOXYS Lepeletier and Serville, pp. 1150-1151 



Revision: Hurd, 1958. Calif. Univ. Pubs. Ent. 14: 275-302, 28 figs., 4 

 maps. 



aurifuscus (Titus). Colo., Calif., Oreg. Hosts: ? Anthidium sp., ? Callanthi- 



Biology: Cockerell, 1909.' Canad. Ent. 41: 334.— Hicks, 1929. Canad. 

 Ent. 61: 8. 



catalinensis Cockerell. Syn. of pomonae pomonae Cockerell. 



martii Cockerell. Syn. of productus subruber Cockerell. 



*pacificus melanogaster Hurd. Mts. of southern Calif. 



Dioxys pacificus melanogaster Hurd, 1958. Calif. Univ. Pubs, Ent. 14: 

 296. 9, $. 



pacificus pacificus Cockerell, changed status. Calif, (except mts. of southern 

 Calif.), Oreg., Nev., Utah, Wyo. 

 Dioxys pacificus Cockerell (reduced to subsp. rank, teste Hurd, 1958, loc. 

 cit. supra, p. 295). 



phaceliae Cockerell. Syn. of pomonae pomonae Cockerell. 



pomonae pomonae Cockerell, changed status. N. Mex., Colo., Idaho, Utah, 

 Ariz., Calif, (except deserts), Oreg. Hosts: Anthidium collectum 

 Huard, Megachile subexilis CklL, Osmia nifoata Ckll. 



