2452 Hymenoptera in America North of Mexico 



sierranensis Kinsey and Ayres, 



Diplolepis 1071 



sierrense Parker, Diploplectron 1613 



sieverti Cockerell, Andrena 1825 



sieverti Cockerell, Colletes 1750 



SIGALPHINAE 229 



Sigalphus Latreille 229 



sigma Weld, Phylloteras 1076 



Sigmatapis Maa 2208 



sigmoidalis Cushman, Syzeuctus [s] 574 



sigmundi Cockerell, Andrena 1839 



signata Fouts, Platygaster 1181 



signata (Linnaeus), Stictia [s] 1708 



signata (Provancher), Parmortha [s] 433 



signata (Viereck), Campoletis 654 



signata (Viereck), Dusona 642 



signatipes (Cresson), Cratichneumon 496 



signatipes (Cresson), Synomelix 603 



signatipes Provancher, Ichneumon 531 



signatus (Gravenhorst), Syrphoctonus 718 



signatus Norton, Allantus 116 



signatus (Provancher), Cyclolabus 543 



signatus Viereck, Campoplex 628 



signicauda Fischer, Phaenocarpa 227 



signifer Packard, Thyreopus 1673 



sig^ifer Townes, Exochus 562 



signifrons (Viereck), Aspilota 222 



Signiphora Ashmead 910 



Signiphorina Nikolskaya 911 



SIGNIPHORINAE 910 



SIGNIPHORINI 910 



signiphoroides Brethes, 



Trichogrammatoidea 893 



sila (LaBerge), Svastra 2135 



silaceum Roger, Proceratium 1339 



Silaon Piccioli 1635 



sileri (Bassett), Disholcaspis 1092 



silesiacus Habermehl, Phygadeuon 423 



silphii Gillette, Antistrophus 1067 



silus Townes, Exochus 562 



silvarum Dalla Torre, Mesochorus 712 



silvarum Holmgren, Mesoleius 597 



silvaticus Fouts, Trimorus 1165 



silvaticus Gahan, Tetrastichus 1000 



silvaticus Holmgren, Orthocentrus 737 



silvensis Girault, Ooctonus 1027 



silvensis (Girault), Syntomosphyrum 1005 



silvestriana Wheeler, Strumigenys 1408 



silvestrii Compere, Azotus 899 



silvestrii DeGregorio, Prospaphelinus 893 



silvestrii Emery, Strumigenys 1404 



silvestrii Menozzi, Aphaenogaster 1363 



silvestrii (Santschi), Leptothorax 1395 



silvestrii Santschi, Polyergus 1466 



silvestrii Trotter, Rhodites 1107 



silvestrii Wheeler, Lasius 1439 



silvestrinus Ghesquiere, Syrphophagus 950 



Silvia Girault, Achrysocharella 1013 



silvicola (Walley), Coccygomimus 345 



silvivagus Evans, Pompilus 1564 



Simandrena Perez 1829 



Simanthedon Zavortink 2157 



Simblephilus Dahlhom 1726 



Simblephilus Jurine 1720 



similans Fox, Bembex 1713 



similans Rohwer, Tachysphex 1631 



similaris (Banks), Pompilus 1566 



similaris Cresson, Lyda 14 



similaris Gahan, Rileya 836 



similaris Norton, Nematus 69 



similaris Provancher, Phygadeuon 448 



similaris (Provancher), Pterocormus 527 



similaris Rohwer, Periclista 95 



similarius Fischer, Opius 212 



similata (MacGillivray), Phymatocera 91 



simile Ashmead, Anomalon 614 



simile (Cresson), Dianthidium 1996 



simile Dasch, Astiphromma 705 



similior (Heinrich), Ichneumon 533 



similis (Ashmead), Aclista 1132 



similis (Ashmead), Anisotylus [s] 947 



similis (Ashmead), Diplolepis 1071 



similis Ashmead, Microplitis 261 



similis Ashmead, Pantoclis 1133 



similis (Ashmead), Prosaspicera 1047 



similis Ashmead, Rhyssalus 174 



similis (Baker), Alloxysta 1059 



similis Baker, Chyphotes 1279 



similis Bassett, Diastrophus 1068 



similis Bassett, Dryophanta 1077 



similis (Bridwell), Solierella [s] 1637 



similis (Brues), Codrus 1126 



similis Brues, Zootrephes 721 



similis Crawford, Perilampus 772 



similis Cresson, Eucerceris 1740 



similis Cresson, Exomalopsis 2116 



similis Cresson, Oxybelus 1656 



similis (Cresson), Trychosis 455 



similis Cushman, Coleocentrus 480 



similis Cushman, Neliopisthus 365 



similis (Cushman), Trathala 688 



similis (Davis), Cteniscus 381 



similis Davis, Latholestes 592 



similis Evans, Sierolomorpha 1276 



similis Fenton, Gonatopus 1248 



similis Fouts, Hoplogryon 1165 



similis (Fox), Crossocerus 1667 



similis Friese, Bombus 2202 



similis Gillette, Synergus 1063 



similis Girault, Euchrysia 775 



similis (Hartig), Diprion 37 



similis Lindqvist, Rhogogaster 110 



similis Malloch, Tiphia 1260 



similis Marlatt, Amauronematus 79 



similis (Masi), Coccophagoides 901 



similis Mayr, Formica 1458 



similis McComb, Chelonus 238 



similis (Norton), Dolerus [s] 46 



similis Olsen, Pogonomyrmex 1354 



similis Osten Sacken, Cynips 1106 



similis Robertson, Augochlora 1950 



similis Robertson, Colletes 1753 



similis Rohwer, Psen 1597 



similis Rohwer, Tachysphex 1631 



similis Rohwer, Xyela 8 



similis Schuster, Sphaeropthalma 1293 



similis Smith, Halictus 1957 



similis Strickland, Pezomachus 407 



