2062 Hymenoptera in America North of Mexico 



Genus MEGACHILE Subgenus DEROTROPIS Mitchell 



Megachile subg. Dewtropis Mitchell, 1936. Amer. Ent. Soc, Trans. 62: 119, 156. 

 Type-species: Megachile pascoeiisis Mitchell. Orig. desig. 



Taxonomy: Mitchell, 1944. Pan-Pacific Ent. 20: 142-144 (Key to spp.). 

 alamosana Mitchell. Oreg., Wyo., Colo. 



Megachile {Xeromegachile) alamosana Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 329. 6. 

 anograe Cockerell. Mont., Wyo., Nebr., Colo., Kans., Tex., Oreg., Calif. Ecology: Excavates 

 nesting burrows in sandy soil. Pollen: Collects pollen from flowers of Opuntia and 

 Oenothera albicaulis, but visits other flowers presumably for nectar including Anogra 

 coronopifolia. Astragalus. 

 Megachile anograe Cockerell, 1908. Ann. and Mag. Nat. Hist. (8) 1: 261. 9. 

 astragali Mitchell. Calif. (Mojave Desert). Pollen: Unknown, but visits flowers of Astragalus 

 lentiginosus var. fremontii. 

 Megachile (Derotropis) astragali Mitchell, 1938. Pan-Pacific Ent. 14: 174. 6, 9. 

 gravita Mitchell. Wash., Oreg., Calif. Pollen: Collects pollen from flowers of Clarkia including 

 C. amoena amoena, C. amoena huntiana, C. cylindrica, C. dudleyana, C. gracilis 

 albicaulis, C. purpurea quadrivuhiera, C. rubicunda, C. speciosa nitens, C. speciosa 

 polyantha, C. speciosa speciosa, C. unguiculata, C. viniinea, C. williamsonii, but visits 

 other flowers for nectar including Chaenactis glabriuscula, Malacothamnus densiflorus. 

 Megachile {Xeromegachile) gravita Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 322. 6. 

 Megachile (Xeromegachile) astata Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 345. 9. 



Biology: MacSwain, Raven and Thorp, 1973. Calif. Univ. Pubs. Ent. 70: 20-23 (floral 

 relationships). 

 laurita Mitchell. Wash., Oreg., Utah. Pollen: Collects pollen from flowers of Oenothera pallida, 

 0. trichocalyx. 

 Megachile laurita Mitchell, 1927. Psyche 34: 115. 9. 



Biology: Linsley, MacSwain and Raven, 1963. Calif. Univ. Pubs. Ent. 33: 41 (floral 



relationships). 

 melanderi Mitchell. Tex., Calif. (Inyo Co.). 



Megachile (Derotropis) melanderi Mitchell, 1944. Pan-Pacific Ent. 20: 140. 9. 

 pascoensis Mitchell. Mont., Idaho, Wash., Oreg., Calif. Parasite: Lines cells with pieces of 

 petals cut from flowers of Clarkia cylindrica and C. speciosa. Pollen: Oligolege of 

 Clarkia including C. amoena, C. biloba, C. bottae, C. cylindrica, C. dudleyana, C. 

 elegans, C. gracilis albicaulis, C. pulchella, C. purpurea, C. rkomboidea, C. rubicunda, 

 C. speciosa, C. unguiculata, C. xantiana, but also visits other flowers for nectar 

 including Chamaebatia foliolosa, Convolvubis villdsus, Cordylanthus pilosus, Sidalcea 

 malvaeflora, Trifolium, Wyethia angustifolia. 



Megachile (Xeromegachile) bakeri Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 316. 6. 

 Preocc. 



Megachile (Xeromegachile) pascoensis Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 320. S. 



Megachile (Xeromegachile) gabrielensis Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 346. 9. 



Biology: MacSwain, Raven and Thorp, 1973. Calif. Univ. Pubs. Ent. 70: 23-26 (floral 

 relationships). 

 semilaurita Mitchell. Utah. 



Megachile laurita semilaurita Mitchell, 1927. Psyche 34: 116. 9. 

 subanograe Mitchell. Tex., Wyo., Utah, Nev., east. Calif. Pollen: Unknown, but visits flowers 

 of Sphaeralcea anibigua. 

 Megachile (Megachiloides) subanograe Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 344. 9. 



sublaurita Mitchell. Utah. 



Megachile laurita sublaurita Mitchell, 1927. Psyche 34: 117. 9. 

 xerophila Cockerell. South. Calif., deserts., Ariz. Pollen: Unknown, but visits flowers of 



Baileya, Chaenactis stevioides, Encelia, Geraea canescens, Helianthus niveus, Larrea 



