2058 Hymenoptera in America North of Mexico 



Euphorbia albomarginata, Heliotropium curassavicum var. oculatum, Lotus 

 comiculatus, Medicago sativa, Melilotus alba, Phacelia ramosissima, Polygonum 

 aubertii, Senecio douglasii, Solidago, Veronica. The name adopted by the International 

 Bee Research Association for this species is Megachile pacifica (Panzer); however, an 

 application pending before the International Commission on Zoological Nomenclature 

 requests that the Commission use its plenary powers to set aside all type selections for 

 Apis rotundata Fabricius, 1793, and to rule that the species is to be interpreted by 

 reference to a newly established neotype specimen. Thus, if the Commission rules 

 affirmatively on this application, the correct name for this species will be Megachile 

 rotundata (Fabricius) which is currently considered to be a synonym of Megachile 

 centuncularis (Linnaeus) and is so treated in this catalog. 



Apis pacifica Panzer, 1798. Faunae Ins. German., v. 55, p. 16. 9. 



Megachile imbecilla Gerstaecker, 1869. Stettin. Ent. Ztg. 30: 359. 9 . 



Taxonomy: Krombein, 1948. Ent. Soc. Wash., Proc. 50: 14 (as rotundata). —Mitchell, 1962. N. 

 C. Agr. Expt. Sta. Tech. Bui. 152: 122-124, figs. 38-39 (redescription, possible identity, as 

 rotundatai). — Hurd, 1967. Ent. Medd. 35: 3-10 (tax. status of rotundata Fabr.). 

 — Rebmann, 1967. Ent. Ztschr. 77: 169-171 (tax. status of rotundata Fabr. and pacifica 

 Panz.). —Holm and Skou, 1972. Ent. Scand. 3: 169-170 (review of tax. status of rotundata 

 Fabr. and pacifica Panz.). —Roberts, 1974. Zool. Nomencl., Bui. 30: 190-192 (proposed 

 suppression of lectotype and designation of neotype in accord with Megachile rotimdata 

 auct). —Anonymous, 1975. Bee World 56: 164 (identity problems, adoption by 

 International Bee Research Association of Megachile pacifica (Panzer) as correct name for 

 this species). 



Biology: Daly, 1952. Ent. News 63: 210-211 (geogr. and floral records in midwest. U. S.). 

 —Hurd, 1954. Ent. News 65: 93-95 (geogr. and floral records in Calif.). —Stephen and 

 Torchio, 1961. Pan-Pacific Ent. 37: 85-93 (nest sites, emergence, cells, adult behavior, 

 leaf-cuttings, larval development, historical notes). —Stephen, 1961. Econ. Ent., Jour. 54: 

 989-993 (artificial nest sites and propagation for alfalfa pollination). — Bohart, 1962. Utah 

 Agr. Expt. Sta., Circ. 144: 1. (management for alfalfa pollination). —Stephen, 1962. Oreg. 

 Agr. Expt. Sta., Bui. 586, 16 pp., 9 figs, (propagation for alfalfa seed production). 

 — Johansen, Jaycox and Hutt, 1963. Wash. Agr. Expt. Sta., Circ. 418:1. (effect of 

 pesticides). —Torchio, 1963. Utah Farm Home Sci. 24: 70-71 (parasite). —Nye and Bohart, 

 1964. Utah State Univ. Agr. Expt. Sta., Circ. 145: 1-7, 6 figs, (equipment for making 

 nesting holes). —Stephen, 1965. XII. Int. Congr. Ent. London, Proc. p. 350 (circadian 

 rhythms). —Stephen and Osgood, 1965. Econ. Ent., Jour. 58: 284-286, 1 table (induction of 

 emergence). —Bacon, Barton, MacSwain, Marble and Stanger, 1965. Calif. Univ. Agr. Ext. 

 Serv., AXT 160: 1-13 (management for alfalfa pollination). — Hobbs, 1965. Canada Dept. 

 Agr., Pub. 1209: 1-11, 5 figs, (importation and management for alfalfa pollination). 

 —Stephen and Osgood, 1965. Econ. Ent. Jour. 58: 965-968 (effect of tunnel size on sex 

 ratio). —Johansen and Eves, 1966. Wash. State Univ. Agr. Expt. Sta., Circ. 469: 1-12 

 (parasites and nest destroyers). —Hobbs, 1967. Canada Dept. Agr., Pub. 1313: 1-19 

 (domestication). —Krombein, 1967. Trap-nesting wasps and bees, pp. 327-329 (life history, 

 nest architecture). —Bohart and Knowlton, 1967. Utah. Ext. Serv., EL 104 (rev): 1-7, 1 pi. 

 (management for higher alfalfa seed yields). — Medler and Lussenhop, 1968. Wis. Univ. 

 Res. Bui. 274: 29-30 (life history, parasites). —Waters, 1968. Idaho Agr. Expt. Sta., 

 Current Information Series 97: 1-4 (beetle excluder trap). —Williams, 1968. Idaho Coll. 

 Forestry, Wildlife and Range Sci., Station Note 10: 1-4 (nesting boards). —Hobbs, 1968. 

 Canad. Ent. 100: 781-784 (control of insect enemies). —Johansen and Eves, 1969. Wash. 

 Agr. Ext. Series, EM 2631 (rev.): 1-10 (control of natural enemies). — Klostermeyer and 

 Gerber, 1969. Ent. Soc. Amer., Ann. 62: 1321-1325 (nesting behavior monitored by an event 

 recorder). —Eves, 1970. Melanderia 4: 1-18, 7 figs., 11 tables (parasite). —Torchio, 1970. 

 Ark. Agr. Ext. Serv., Mis. Publ. 127: 84-90 (parasite). —Johansen and Eves, 1971. Wash. 

 Agr. Ext. Serv., EM 2631 (rev.): 1-10 (control of natural enemies). —Waters, 1971. Idaho 

 Univ. Agr. Expt. Sta., Current Information Ser. 163: 1-4 (insect enemies and their control). 

 —Hobbs and Krunic, 1971. Canad. Ent. 103: 674-685 (parasites). —Holm and Skou, 1972. 

 Ent. Scand. 3: 169-180, 6 figs., 8 tables (life history, nest architecture, sex ratio). —Torchio, 

 1972. Melanderia 10: 1-22, 55 figs., 1 table {Sapyga pumila Cress., a parasite). —Torchio, 



