Superfamily APOIDEA 2069 



Megachile floridana Robertson, 1895. Amer. Ent. Soc, Trans. 22: 125. 6. 

 Megachile shennani Mitchell, 1924. Elisha Mitchell Sci. Soc, Jour. 40: 163. 6. 

 Megachile pruina var. bermudensis Mitchell, 1929. Psyche 36: 93. 9 . 



Taxonomy: Cockerell, 1905. Amer. Ent. Soc, Trans. 31: 337. 

 sidalceae Cockerell. Tex., N. Mex., Ariz., south. Calif., Mexico. Ecology: Uses pieces of leaves 

 cut from Amaraiithus, Boerhaavia, Fraxinus, alfalfa, chinaberry, cotton, cottonwood, 

 rose, and umbrella tree for nesting material. Parasite: Coelioxys novomexicana Ckll. 

 Pollen: Polylectic, visits a wide variety of flowers including Acacia, Aloysia, Asclepias, 

 Asparagus, Baccharis, Cephalanthus, Cercidium, Cleome, Condalia, Croton 

 califomicus, Encelia, Eriogonum, Ferocactus, Franseria, Funastrum, Gutierrezia, 

 Haplopappus, Helianthus, Hoffmanseggia, Hymenothrix, Kallstroemia grandiflora, 

 Larrea tridentata, Lepidium, Lotus, Medicago sativa, Melilotus, Mimosa, Mortonia, 

 Olneya tesota, Opuntia, Pedis papposa, Prosopis glandulosa var. glandulosa, 

 Psilostrophe cooperi, Salix, Salsola, Sapindus, Senecio douglasii, Sidalcea malvaeflora, 

 Tamarix, Verbesina, Wislizenia. 



Megachile sidalceae Cockerell, 1897. Amer. Ent. Soc, Trans. 24: 158. 6. 



Megachile abducta Mitchell, 1926. Amer. Ent. Soc, Trans. 52: 111. 6. 



Biology: Hurd and Linsley, 1975. Smithsn. Contrib. Zool. 193: 38 (floral relationships with 

 Larrea). 



Genus MEGACHILE Subgenus ACENTRON Mitchell 



Megachile subg. Acentron Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 303, 307. 

 Type-species: Megachile albitarsis Cresson. Orig. desig. 

 albitarsis Cresson. Mich., Ind., N. C, Ga., Fla., Ala., Miss., La., Tex., N. Mex., Ariz.; Mexico. 

 Pollen: Apparently polylectic, visits flowers of Asclepias, Aster, Bidens, Cassia, 

 Cephalanthus, Chrysopsis, Coreopsis, Cyrilla, Eryngium, Flaveria, Gaillardia, 

 Galactia, Helenium, Helianthus, Ilex, Ipomoea, Kallstroemia grandiflora, Lespedeza 

 repeals, Liatris, Melilotus, Phaseolus, Pycnanthemum hypsopifolia, Rhus, Rudbeckia, 

 Solidago, Stokesia, Verbena, Xyris caroliana. 



Megachile albitarsis Cresson, 1872. Amer. Ent. Soc, Trans. 4: 263. 6. 



Megachile optiva Cresson, 1872. Amer. Ent. Soc, Trans. 4: 268. ?. 



Megachile newelli Cockerell, 1908. Ann. and Mag. Nat. Hist. (8) 1: 262. 9. 



Megachile kallstroemiae Cockerell, 1908. Ann. and Mag. Nat. Hist. (8) 1: 264. 9. 



Genus MEGACHILE Subgenus MELANOSARUS Mitchell 



Megachile subg. Melanosams Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 303, 307. 

 Type-species: Megachile xylocopoides Smith. Orig. desig. 

 bahamensis Mitchell. Fla.; Bahamas. Pollen: Unknown, but visits flowers of Bidens leucantha, 

 Flaveria, Melanthera brevifolia, Poinsettia cyathophora. 

 Megachile bahamejisis Mitchell, 1927. Psyche 34: 47. 9. 



Megachile (Melanosarus) floridensis Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 349. <J, 9. 

 xylocopoides Smith. Md., N. C, Ga., Fla., Ala., Miss., La., Tex. Parasite: Coelioxys dolichos 

 Fox, Leucospis affinis Say, Melittobia possibly megachilis (Pack.), Tetrastichus 

 niegachilidis Burks. Pollen: Polylectic, visits flowers of Bidens leucantha, Borrichia, 

 Cephalanthus, Citrus limonum, Elephantopus carolinianus, Gaillardia, Helenium, 

 Helianthus, Ilex, Ilea, Mikania, Oxypolis, Phaseolus, Poinsettia cyathophora. 

 Polygonum, Rhus, Rubus, Rudbeckia hirta, Senecio, Solidago, Trifolium, Vertwnia. 

 Megachile xylocopoides Smith, 1853. Cat. Hym. Brit. Mus., v. 1, p. 189. 9,6. 



Biology: Krombein, 1967. Trap-nesting wasps and bees, pp. 329-331, pi. 20, fig. 98 (life 

 history, nest architecture, supersedure, parasites). 



Genus MEGACHILE Subgenus SAYAPIS Titus 



Gnathocera Provancher, 1883. Nat. Canad. 13: 232. Preocc. 



Type-species: Megachile pugnatus Say. Monotypic (=Gnathocera cephalica 

 Provancher). 



