Crabro ruficornis Zetterstedt, 1838:443 - Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 (listed). - As Ectemnius ruficornis: - Leclercq, 1951Leclercq, J. 1951. Catalogue synonymique des Crabroninae (Hym. Sphecidae) de la Belgique. Institut royal des Sciences naturelles de Belgique 27 (28):1-20.:16 (distribution); Beaumont, 1964Beaumont, J. de 1964. Hymenoptera: Sphecidae. Lausanne. 1-174.:127 (distribution); Dollfuss, 1983Dollfuss, H. 1983. Fam.: Sphecidae. Verlag der österreichischen Akademie der Wissenschaften, Wien. 1-32.:18 (distribution); Lomholdt, O., 1984Lomholdt, O. 1984. The Sphecidae (Hymenoptera) of Fennoscandia and Denmark. Fauna Ent.Scan. 4 , part 1:1-224.:320 (distribution); Pádr, 1989Pádr, Z. 1989. Sphecoidea. In: Sedivý, J. (Ed.). Enumeratio Insectorum Bohemoslovakiae - Check List of Czechoslovak Insects III (Hymenoptera). 165-171. (distribution); Dollfuss, 1991Dollfuss, H. 1991. Bestimmungsschlüssel der Grabwespen Nord- und Zentraleuropas (Hymenoptera Sphecidae) mit speziellen Angaben zur Grabwespenfauna Österreichs. Stapfia 24:1-274.:175 (distribution, listed); Schmidt, 1992Schmidt, K. 1992. Katalog der Spheciden Europas und der Türkei. :1-16. (distribution); Leclercq & Barbier, 1993Leclercq, J. & Y. Barbier 1993. Atlas de répartition des Crabroniens de France et des régions limitrophes (Hymenoptera, Sphecidae, Crabronini). 1-94.:66 (distribution); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 (distribution, listed); Leclercq, 1993Leclercq, J. 1993. Hymenopteres Sphecides Crabroniens d´ Europe et du Bassin Mediterraneen. Notes fauniques de Gembloux 26:9-54.:31 (listed); Negrisolo, 1995Negrisolo, E. 1995. Hymenoptera Sphecidae. In: Minelli A., Ruffo S. & La Posta S. (Ed.). Checklist delle specie della fauna italiana. 1-12.:7 (distribution); Schmid-Egger et al., 1995Schmid-Egger, C., S. Risch & O. Niehuis 1995. Die Wildbienen und Wespen in Rheinland-Pfalz (Hymenoptera, Aculeata). Verbreitung, Ökologie und Gefährdungssituation. Fauna Flora Rheinland-Pfalz Beiheft 16:1-296.:184 (Nistweise [in Totholz], prey/host [Fliegen (Diptera)]); Klein, W., 1996Klein, W. 1996. De graafwespen van de Benelux - Hymenoptera, Sphecidae. Jeugdbondsuitgeverij, 1-130. (distribution), 50 (distribution); Edwards, 1998 1998. Provisional atlas of the aculeate Hymenoptera of Britain and Ireland Part 2. 1-138. (distribution); Blösch, 2000Blösch, M. 2000. Die Grabwespen Deutschlands. Goecke & Evers, Keltern. 1-480.:341 (distribution); Ohl, 2001Ohl, M. 2001. Sphecidae. In: Dathe, H., A. Taeger & S.M. Blank (Ed.). Verzeichnis der Hautflügler Deutschlands (Entomofauna Germanica, Band 4). 137-143. (distribution), 139 (distribution); Bieri, 2002Bieri, S. 2002. Bienen und Wespen des Fürstentums Liechtenstein. 1-160. (distribution); Leclercq, 2007Leclercq, J. 2007. Hyménoptères Crabroniens des Amériques du genre Ectemnius Dahlbom 1845 (Hymenoptera: Crabronidae Crabronini). Notes fauniques de Gembloux 60 (4):163-177. (distribution); Gogala, 2011Gogala, A. 2011. Sphecid wasps of Slovenia (Hymenoptera: Ampulicidae, Sphecidae and Crabronidae). Scopolia 73 (1-39):. (distribution); Bitsch, 2014Bitsch, J. 2014. Sphéciformes nouveaux ou peu connus de la faune de France et d’Europe occidentale (Hymenoptera, Aculeata). Bulletin de la Société entomologique de France 119 (3):391-419. (distribution). - As Ectemnius ruficornis ruficornis: - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139. (distribution); Ljubomirov & Yildirim, 2008Ljubomirov, T. & E. Yildirim 2008. . Sofia. 1-316. (distribution).
Crabro aurilabris Herrich-Schaeffer, 1841:20 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro nigrifrons Cresson, 1865:482, ♂. 3 ♂♂, Colorado Territory, 1864 (leg. Mr. James Ridings). - Fox, 1895Fox, W.J. 1895. The Crabroninae of Boreal America. Transactions of the American Entomological Society 22 (2):129-226. (distribution); Móczár, 1959Móczár, L. 1959. Sphecoidea II. Budapest. 1-87.:36 (determination); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Dollfuss, 1991Dollfuss, H. 1991. Bestimmungsschlüssel der Grabwespen Nord- und Zentraleuropas (Hymenoptera Sphecidae) mit speziellen Angaben zur Grabwespenfauna Österreichs. Stapfia 24:1-274.:175 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro contiguus Cresson, 1865:484, ♀. 3 ♀♀, Colorado Territory, 1864 (leg. Mr. James Ridings). - Fox, 1895Fox, W.J. 1895. The Crabroninae of Boreal America. Transactions of the American Entomological Society 22 (2):129-226.:145 ( listed as synonym of Crabro nigrifrons Cresson, 1865); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro septentrionalis Packard, 1866:110, ♀. ♀, Hudson Bay Territory (Norton); ♀, Maine, Brunswick, and head waters of Penobscot (leg. Packard). Synonymized with Crabro nigrifrons Cresson, 1865 by Fox, 1896Fox, W.J. 1896. Supplement to 'The Crabroninæ of Boreal America'. Transactions of the American Entomological Society 23 (1):78-80.:78. - Fox, 1895Fox, W.J. 1895. The Crabroninae of Boreal America. Transactions of the American Entomological Society 22 (2):129-226. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro planifrons Thomson, 1870:173 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Dollfuss, 1991Dollfuss, H. 1991. Bestimmungsschlüssel der Grabwespen Nord- und Zentraleuropas (Hymenoptera Sphecidae) mit speziellen Angaben zur Grabwespenfauna Österreichs. Stapfia 24:1-274.:175 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro longipalpis Verhoeff, 1892:70 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Bitsch & Leclercq, 1993Bitsch, J. & Leclercq, J. 1993. Hyménoptères sphecidae d´Europe Occidentale. Vol. 1 Generalites - Crabroninae. 1-325.:161 ( listed as synonym of Ectemnius ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro chipsanii Matsumura, 1911:102 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).
Crabro lineatotarsis Matsumura, 1911:102 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1677 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:28 ( listed as synonym of Ectemnius ruficornis ruficornis (Zetterstedt, 1838)).