MEGACHILIDAE 477 



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



cit. supra, p. 283), 

 Dioxys phaceliae Cockerell (syn. by Hurd, loc. cit. supra, p. 283). 

 Dioxys catalinensis Cockerell (syn. by Hurd, loc. cit. supra, p. 283). 



*pomonae timberlakei Hurd. Southern Calif., deserts. 



Dioxys pomonae timberlakei Hurd, 1958. Calif. Univ. Pubs. Ent. 14: 

 285. ?, $. 



*productus cismontanicus Hurd. Pacific slope of Calif.; Mexico (Baja Ca- 

 lif.). Host: Anthidium c. collectuin Huard. 

 Dioxys productus cismontanicus Hurd, 1958. Calif. Univ. Pubs. Ent. 14: 

 290. ?, $. 



productus productus (Cresson), changed status. Great Basin of Calif., Nev., 

 Oreg., Utah. 

 Dioxys producta (Cresson) of Catalog, in part (producta reduced to 

 subsp. rank and productus var. subruber Cockerell deleted from 

 syn. and made a valid subsp., teste Hurd, 1958, loc. cit. supra, p. 

 287). 



productus subruber (Cockerell), changed status. Calif, deserts, Ariz., N. 



Mex., western Tex. Host: ? Anthidium paroselae Ckll. 

 Dioxys producta (Cresson) of Catalog, in part (subruber removed from 



syn. and made a valid subsp., teste Hurd, 1958, loc. cit. supra, p 



289). 

 Dioxys martii Cockerell (syn. by Hurd, 1958, loc. cit. supra, p. 289). 

 Biology: Newberry, 1900. Psyche 9: 94. 



Tribe MEGACHILINI 



Taxonomy: Michener and Sokal, 1957. Evolution 11: 130-162, 15 figs., 4 

 tables (genera of Hoplitis complex) . 



Genus PROCHELOSTOMA Robertson, p. 1152 



philadelphi (Robertson). Conn. Nests in deserted anobiid borings. Visits a 

 number of flowers in different families. 

 Biology: Krombein, 1959. Ent. News 70: 135-136. 



HERIADES subgenus NEOTRYPETES Robertson, p. 1152 



leavitti Crawford, changed status. N. B. to Wyo., south to Fla. and Tex. On 

 many flowers, mainly Compositae. 

 Heriades (Neotry petes) leavitti crate fordi Graenicher (syn. by Mitchell, 

 1962, loc. cit. supra, p. 50). 



leavitti crawfordi Graenicher. Syn. of typical leavitti Crawford. 



variolosa variolosa (Cresson). Maine to B. C, south to Fla. and Tex. Visits 

 flowers of many families, but principally Compositae. 



HERIADES subgenus PHYSOSTETHA Michener, pp. 1152-1153 



carinata Cresson. Maine, Fla. On flowers of many families. 



ASHMEADIELLA subgenus ASHMEADIELLA Cockerell, pp. 1153-1155 



Ashmeadiella subg. Titusella Cockerell syn. under subg. Ashmeadiella by 



Michener and Sokal, 1957, Evolution 11: 159, and component spp. 

 transf. 



aridula astragali Michener. 



Morphology: Snelling, 1962. Pan-Pacific Ent. 38: 229-230, fig. 1 (inter- 

 sex). 



biscopula Michener. Transf. from Ashmeadiella subg. Titusella Cockerell, p. 

 1155. 



bucconis bucconis (Say). Ga., 111. On flowers of Brauneria, Coreopsis, He- 

 lianthus, Solidago, Verbena and Verbesina. 



