2008 Hymenoptera in America North of Mexico 



semdata, Erigeron, Fayopyrum, Helianthus, Hex, Medicago sativa, Melilotus alba, M. 



officinalis, Mentha canadensis, Monarda fishilosa, Parthenocissus quinquefolia, 



Penstemon, Petalostemon candidus, Polygonum sca7idens, Potentilla, Rhus glabra, R. 



typhina, Rubus, Senecio, Solidago, Trifolium, Vicia. 

 Heriades carinatum Cresson, 1864. Ent. See. Phila., Proc. 2: 383. 9,6. 

 Heriades glomerans Schletterer, 1889. Zool. Jahrb., Abt. f. System., Geog. u. Biol. Tiere 4: 



681. 9. 



Biology: Rau, 1922. Acad. Sci. St. Louis, Trans. 24 (7): 39-40 (nest). —Matthews, 1965. Amer. 

 Ent. Inst. Contrib. 1: 1-33, 23 figs., 7 tables (nest, life history, immature stages, parasites). 

 — Krombein, 1967. Trap-nesting wasps and bees, pp. 279-282 (nest architecture, life 

 history, supersedure). 



cressoni Michener. Nebr. to N. Mex., west to B. C. and Calif. Pollen: Polylectic, visits a wide 

 variety of flowers including Achillea lanulosa. Aster adscendens delectabilis, A. 

 canescens, A. parishii, Calycadenia multiglandulosa, Chrysopsis, Chrysothammis 

 pumilus, C. viridulus, Chamaenerion angustifolium, Cirsium califomicum, Erigeron 

 foliosus var. stenophylius, Eriogonum elongatum, E. latifolium var. nudum, 

 Eriophyllum confertiflorum , Gayophytum ramosissimum, Geranium richardsoni, 

 Gidierrezia califomica, Haplopappns gracilis, Helenium bigelovii, Heteromeles 

 arbutifolia, Potentilla gracilis, P. glandidosa, Senecio ionophyllus, Solidago califomica, 

 S. confinis, S. petradoria. 

 Heriades (Physostetha) cressoni Michener, 1938. Ent. Soc. Amer., Ann. 31: 529. 9,6. 



gracilior Cockerell. Colo., N. Mex., Ariz., Nev. and south. Calif. Pollen: Unknown, but visits 

 flowers of Convolvulus ari'eyisis, Opnntia. 

 Heriades gracilior Cockerell, 1897. Ann. and Mag. Nat. Hist. (6) 20: 138. 6,9. 



occidentalis Michener. Oreg., Calif. Ecology: Nests in abandoned beetle burrows in cones of 

 Pinus attenuata. Pollen: Polylectic, visits a wide variety of flowers including 

 Adenostoma fasciculatum, Angelica tomentosa, Asclepias fascicularis, Baccharis 

 douglasii, Cirsiuyn vulgaris, Cordylanthus, Cryptantha intermedia, Eriogonum 

 fasciculatum, Eriogonum latifolium var. nudum, Eriodictyon trichocalyx, Eriophyllum 

 lanatum, Eryngium aristatulum, Gnaphalium thermale, Haplopappus squarrosus, 

 Helianthnm scoparius, Helianthus gracilentus, Hemizonia paniculata, Heteromeles 

 arbutifolia, Lonicera interrupta, Lotus, Nolina parryi, Opuntia occidentalis, Phacelia 

 imbricata, Rhus integrifolia, Sidalcea malvaeflora, Solidago califomica, S. occidentalis, 

 Stephanomeria, Swertia parryi, Tetradymia canesceyis. Verbena lasiostachys. 

 Heriades (Physostetha) occidentalis Michener, 1938. Ent. Soc. Amer., Ann. 31: 525. 9,6. 



timberlakei Michener. Ariz., Nev., N. Mex., Colo. Pollen: Unknown, but visits flowers of 

 Euphorbia albomarginata. 

 Heriades (Physostetha) timberlakei Michener, 1938. Ent. Soc. Amer., Ann. 31: 527. 6,9. 



Genus PROCHELOSTOMA Robertson 



Prochelostoma Robertson, 1903. Amer. Ent. Soc, Trans. 29: 167. 



Type-species: Heriades philadelphi Robertson. Monotypic and orig. desig. 



Revision: Michener, 1938. Ent. News 69: 131. 

 philadelphi (Robertson). N. Y. to Ga., west to Mich., 111., Kans. and Miss. Ecology: Nests in 



deserted anobiid borings and trap-nests. Parasite: Melittobia chalybii Ashm., Pyemotes 

 ventricosus (Newport). Pollen: Unknown, but visits flowers of Capsella, Crataegus, 

 Ellisia, Geranium, Hydrophyllum, Hex, Philadelphicus, Rubus. Predator: Trogoderma 

 omatutn Say. 

 Heriades philadelphi Robertson, 1891. Amer. Ent. Soc, Trans. 18: 64. 9, 6. 



Biology: Krombein, 1959. Ent. News 70: 135-136 (nest, mating). —Krombein, 1967. 

 Trap-nesting wasps and bees, pp. 276-278, pi. 17, fig. 86 (nest architecture, life history, 

 supersedure, parasites). 



Genus CHELOSTOMA Latreille 



Chelostoma Latreille, 1809. Gen. Crust. Ins., v. 4, p. 16. 



