2392 Hymenoptera in America North of Mexico 



oblitus (Heinrich), Pterocormus 525 



oblonga Provancher, Megachile 2015 



oblonga Townes, Hyptia 1111 



oblonga (Viereck), Nepiera 658 



oblongiceps Smith, Ponera 1342 



oblongopunctatus (Hartig), 



Lophyroplectus 590 



oblongus Fox, Lithurgus 2074 



oblongus (Lovell), Dialictus 1969 



oblongus Packard, Crabro 1678 



oblongus (Provancher), Gastrancistrus 792 



obnata MacGillivray, Macrophya 123 



obnubilus (Sandhouse), Dialictus 1969 



obovata Stebbins, Cynips 1107 



obrepta Townes, Netelia 362 



obrussa MacGillivray, Macrophya 120 



obscura Banks, Ageniella 1541 



obscura Blake, Mutilla 1311 



obscura Cresson, Sapyga 1320 



obscura Forel, Eciton 1330 



obscura Fowler, Nomada 2100 



obscura Klug, Scolia 1318 



obscura Robertson, Trachandrena 1840 



obscura (Schmid), Parania 620 



obscura Schuster, Odontophotopsis [s] 1300 



obscura (Strobl), Xyela 8 



obscura (Swenk), Epeoloides 2087 



obscurans Lovell and Cockerell, 



Sphecodes 1975 



obscuranus Rohwer, Tachytes 1627 



obscurata (Cresson), Empria 102 



obscurata Cresson, Perdita 1874 



obscurata Stitz, Lasius 1435 



obscurator (Nees), Orgilus 280 



obscuratorius Gravenhorst, Ichneumon 536 



obscuratus (Heinrich), Ichneumon 532 



obscuratus MacGillivray, 



Paracharactus 91 



obscurella (Cresson), Cryptopimpla [s] 573 



obscurella (Cresson), Nomadopsis 1860 



obscurella Fowler, Nomada 2100 



obscurella Timberlake, Perdita 1920 



obscurellus (Cresson), Rhorus [s] 585 



obscurellus (Davis), Lathrolestes 592 



obscurellus Muesebeck, Dendrocerus 1194 



obscurescens Timberlake, Perdita [s] 1909 



obscuricolor (Heinrich), Obtusodonta 516 



obscuricornis Fouts, Leptacis 1185 



obscuricornis Viereck, Apanteles 252 



obscurida Warncke, Andrena 1840 



obscuriforme Quilis, Aphidius [v] 306 



obscurinotata Girault, Achrysocharella 1013 



obscurior Cockerell, Halictus 1960 



obscurior Forel, Brachymyrmex 1424 



obscurior Timberlake, Perdita [s] 1876 



obscurior Wheeler, Atta 1411 



obscuripennis Ashmead, Platygaster 1180 



obscuripennis Cresson, Tenthredo 117 



obscuripennis Smith, Andrena 1805 



obscuripes Ashmead, Aphidius 306 



obscuripes Ashmead, Habrocytus 812 



obscuripes (Ashmead), Trimorus 1164 



obscuripes Brues, Cheiropachus 800 



obscuripes (Brues), Codrus 1126 



obscuripes Forel, Formica 1460 



obscuripes (Holmgren), Tymmophorus 721 



obscuripes Townes, Cubocephalus [s] 435 



obscuripes (Viereck), Olesicampe 674 



obscuripostica Viereck, Andrena 1845 



obscurissimus Perkins, Neogonatopus 1249 



obscuriventris Mayr, Formica [s] 1460 



obscuriventris Wheeler, Strumigenys 1404 



obscurum (Cresson), Diadegma 669 



obscurum Evans, Pseudisobrachium 1218 



obscurum (Fabricius), Myzinum 1267 



obscurum Girault, Eusandalum 880 



obscurus (Breland), Torymus 756 



obscurus Cresson, Exetastes 577 



obscurus (Cresson), Gelis 407 



obscurus Cresson, Stilpnus 739 



obscurus Cresson, Tachytes [s] 1626 



obscurus Davis, Deleter 736 



obscurus Fouts, Trimorus 1164 



obscurus Howard, Homalotylus 948 



obscurus McCracken and Egbert, 



Synergus 1061 



obscurus Norton, Nematus 71 



obscurus Provancher, Aphidius 307 



obscurus (Robertson), Dialictus 1969 



obscurus Schuster, Photomorphus 1297 



obscurus Smith, Crabro 1677 



obscurus Townes, Agrothereutes 448 



obscurus Viereck, Leptothorax 1397 



obscurus Westwood, Monodontomerus 762 



obsidianator (Brulle), Gnamptopelta [s] 536 



obsitus MacGillivray, Aphanisus 92 



obsolete Cresson, Monumetha 2015 



obsoleta Howard, Bembex 1715 



obsoleta MacGillivray, Macroxyela 10 



obsoleta (Norton), Caliroa 85 



obsoleta Timberlake, Perdita [s] 1910 



obsoletris Say, Tremex 130 



obsoletum (Say), Muesebeckidium 1225 



obsoletus Brues, Disogmus 1127 



obsoletus Dasch, Mesochorus 711 



obsoletus Kurdjumov, Aphidius 309 



obsoletus Riley, Ichneumon 493 



obsoletus (Say), Cryptoserphus 1127 



obsoletus Whittaker, Aphanogmus 1190 



obstusata Swenk, Nomada 2100 



obtentus MacGillivray, Paracharactus 93 



obtrectans (Kinsey), Acraspis [v] 1079 



obturator Wheeler, Leptothorax 1394 



obtusa Bugbee, Eurytoma 855 



obtusa Timberlake, Perdita 1931 



obtusata Swenk, Nomada 2100 



obtusilobae Ashmead, Eurytoma 855 



obtusilobae (Ashmead), Synergus 1062 



obtusilobae (Bassett), Callirhytis 1103 



obtusilobae Dalla Torre, Cynips 1065 



obtusilobae Osten Sacken, Aegilips 1049 



obtusilobensis Weld, Ceroptres 1065 



obtusiventris Crawford, Coelioxys 2081 



obtusiventris Gahan, Eurytoma 856 



Obtusodonta Heinrich 516 



obtusopilosa Emery, Formica 1450 



obtusospinosa Pergande, Pheidole 1374 



obtusus Kirby, Nematus 83 



