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- (-) Remove Auchenorrhyncha (Homoptera): [Key to families, Germany, P. 285]. filter Auchenorrhyncha (Homoptera): [Key to families, Germany, P. 285].
- (-) Remove Bombus - Latreille 1802 (Apidae): [Key to species, Germany, P. 398]. filter Bombus - Latreille 1802 (Apidae): [Key to species, Germany, P. 398].
- (-) Remove Invertebrata (Animalia). filter Invertebrata (Animalia).
- / Germany] [North Sea / / Keys]. (1) Apply / Germany] [North Sea / / Keys]. filter
- 215]. (1) Apply 215]. filter
- 410]. (1) Apply 410]. filter
- 443]. (1) Apply 443]. filter
- 518]. (1) Apply 518]. filter
- 64]. (1) Apply 64]. filter
- [Identification guides / / ] [Germany / / Keys] [North Sea / / ]. (1) Apply [Identification guides / / ] [Germany / / Keys] [North Sea / / ]. filter
- Acalyptratae (Cyclorrhapha): [Key to families, Germany, P. 463]. (1) Apply Acalyptratae (Cyclorrhapha): [Key to families, Germany, P. 463]. filter
- Acanthocephala (Animalia): [Diagnostic characters, P. 51 (1) Apply Acanthocephala (Animalia): [Diagnostic characters, P. 51 filter
- Acanthosomatidae (Pentatomoidea): [Key to species, Germany, P. 281]. (1) Apply Acanthosomatidae (Pentatomoidea): [Key to species, Germany, P. 281]. filter
- Acari (Arachnida): [Key to orders, Germany, P. 144]. (1) Apply Acari (Arachnida): [Key to orders, Germany, P. 144]. filter
- Agelenidae (Araneae): [Key to genera, Germany, P. 132]. (1) Apply Agelenidae (Araneae): [Key to genera, Germany, P. 132]. filter
- Alleculidae (Tenebrionidae): [Key to species, Germany, P. 353]. (1) Apply Alleculidae (Tenebrionidae): [Key to species, Germany, P. 353]. filter
- Amaurobiidae (Araneae): [Key to genera, Germany, P. 122]. (1) Apply Amaurobiidae (Araneae): [Key to genera, Germany, P. 122]. filter
- Amphibia (1) Apply Amphibia filter
- Amphipoda (Peracarida): [Key to families, Germany, P. 175]. (1) Apply Amphipoda (Peracarida): [Key to families, Germany, P. 175]. filter
- Animalia (1) Apply Animalia filter
- Animalia: [Key to classes, P. 1]. (1) Apply Animalia: [Key to classes, P. 1]. filter
- Annelida (1) Apply Annelida filter
- Annelida (Animalia): [Key to classes, P. 94]. (1) Apply Annelida (Animalia): [Key to classes, P. 94]. filter
- Anoplura (Insecta): [Key to families, Germany, P. 255]. (1) Apply Anoplura (Insecta): [Key to families, Germany, P. 255]. filter
- Anostraca (Branchiopoda): [Key to families, Germany, P. 159]. (1) Apply Anostraca (Branchiopoda): [Key to families, Germany, P. 159]. filter
- Anthicidae (Tenebrionoidea): [Key to species, Germany, P. 354]. (1) Apply Anthicidae (Tenebrionoidea): [Key to species, Germany, P. 354]. filter
- Anthocoridae (Cimicoidea): [Key to genera, Germany, P. 275]. (1) Apply Anthocoridae (Cimicoidea): [Key to genera, Germany, P. 275]. filter
- Anthomyiidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 491]. (1) Apply Anthomyiidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 491]. filter
- Aphididae (Aphidoidea): [Key to genera, Germany, P. 302]. (1) Apply Aphididae (Aphidoidea): [Key to genera, Germany, P. 302]. filter
- Aphidina (Aphidoidea): [Key to families, P. 298]. (1) Apply Aphidina (Aphidoidea): [Key to families, P. 298]. filter
- Aphrophoridae (Cercopidae): [Key to species, Germany, P. 289]. (1) Apply Aphrophoridae (Cercopidae): [Key to species, Germany, P. 289]. filter
- Apoidea (Aculeata): [Key to genera, Germany, P. 395]. (1) Apply Apoidea (Aculeata): [Key to genera, Germany, P. 395]. filter
- Arachnida (1) Apply Arachnida filter
- Arachnida (Arthropoda): [Key to orders, Germany, P. 111]. (1) Apply Arachnida (Arthropoda): [Key to orders, Germany, P. 111]. filter
- Araneae (Arachnida): [Key to families, Germany, P. 115]. (1) Apply Araneae (Arachnida): [Key to families, Germany, P. 115]. filter
- Araneidae (Araneae): [Key to genera, Germany, P. 124]. (1) Apply Araneidae (Araneae): [Key to genera, Germany, P. 124]. filter
- Arthropoda (1) Apply Arthropoda filter
- Arthropoda (Animalia): [Key to orders, P. 109]. (1) Apply Arthropoda (Animalia): [Key to orders, P. 109]. filter
- Asilidae (Orthorrhapha): [Key to genera, Germany, P. 478]. (1) Apply Asilidae (Orthorrhapha): [Key to genera, Germany, P. 478]. filter
- Astigmata (Acari): [Key to families, Germany, P. 152]. (1) Apply Astigmata (Acari): [Key to families, Germany, P. 152]. filter
- Athericidae (Orthorrhapha): [Key to genera, Germany, P. 477]. (1) Apply Athericidae (Orthorrhapha): [Key to genera, Germany, P. 477]. filter
- Atlantic Ocean (1) Apply Atlantic Ocean filter
- Aves (1) Apply Aves filter
- Baetidae (Ephemeroptera): [Key to genera, Germany, P. 214]. (1) Apply Baetidae (Ephemeroptera): [Key to genera, Germany, P. 214]. filter
- Berytidae (Lygaeoidea): [Key to genera, Germany, P. 276]. (1) Apply Berytidae (Lygaeoidea): [Key to genera, Germany, P. 276]. filter
- Blattodea (Dictyoptera): [Key to families, Germany, P. 233 (1) Apply Blattodea (Dictyoptera): [Key to families, Germany, P. 233 filter
- Bombyliidae (Orthorrhapha): [Key to genera, Germany, P. 479]. (1) Apply Bombyliidae (Orthorrhapha): [Key to genera, Germany, P. 479]. filter
- Bryozoa (1) Apply Bryozoa filter
- Bryozoa (Animalia): [Key to families, Germany (marine), P. 499]. (1) Apply Bryozoa (Animalia): [Key to families, Germany (marine), P. 499]. filter
- Buprestidae (Buprestoidea): [Key to species, Germany, P. 346]. (1) Apply Buprestidae (Buprestoidea): [Key to species, Germany, P. 346]. filter
- Calliphoridae (Cyclorrhapha): [Key to genera, Germany, P. 494]. (1) Apply Calliphoridae (Cyclorrhapha): [Key to genera, Germany, P. 494]. filter
- Cantharoidea (Polyphaga): [Key to genera, Germany, P. 343]. (1) Apply Cantharoidea (Polyphaga): [Key to genera, Germany, P. 343]. filter
- Carabidae (Caraboidea): [Key to species, Germany, P. 328]. (1) Apply Carabidae (Caraboidea): [Key to species, Germany, P. 328]. filter
- Cecidomyiidae (Nematocera): [Key to subfamilies, Germany, P. 475]. (1) Apply Cecidomyiidae (Nematocera): [Key to subfamilies, Germany, P. 475]. filter
- Cerambycidae (Chrysomeloidea): [Key to genera, Germany, P. 355]. (1) Apply Cerambycidae (Chrysomeloidea): [Key to genera, Germany, P. 355]. filter
- Cercopidae (Cercopoidea): [Key to species, Germany, P. 289]. (1) Apply Cercopidae (Cercopoidea): [Key to species, Germany, P. 289]. filter
- Chloropidae (Cyclorrhapha): [Key to genera, Germany, P. 491]. (1) Apply Chloropidae (Cyclorrhapha): [Key to genera, Germany, P. 491]. filter
- Chrysididae (Chrysidoidea): [Key to species, Germany, P. 388]. (1) Apply Chrysididae (Chrysidoidea): [Key to species, Germany, P. 388]. filter
- Chrysomelidae (Chrysomeloidea): [Key to genera, Germany, P. 358]. (1) Apply Chrysomelidae (Chrysomeloidea): [Key to genera, Germany, P. 358]. filter
- Chydoridae (Cladocera): [Key to genera, Germany, P. 163]. (1) Apply Chydoridae (Cladocera): [Key to genera, Germany, P. 163]. filter
- Cicadellidae (Cicadelloidea): [Key to species, Germany, P. 290]. (1) Apply Cicadellidae (Cicadelloidea): [Key to species, Germany, P. 290]. filter
- Cixiidae (Fulgoroidea): [Key to species, Germany, P. 287]. (1) Apply Cixiidae (Fulgoroidea): [Key to species, Germany, P. 287]. filter
- Cladocera (Branchiopoda): [Key to families, Germany, P. 160]. (1) Apply Cladocera (Branchiopoda): [Key to families, Germany, P. 160]. filter
- Cleroidea (Polyphaga): [Key to families, Germany, P. 350 (1) Apply Cleroidea (Polyphaga): [Key to families, Germany, P. 350 filter
- Clubionidae (Araneae): [Key to genera, Germany, P. 134]. (1) Apply Clubionidae (Araneae): [Key to genera, Germany, P. 134]. filter
- Coccina (Coccoidea): [Key to species, Germany, P. 308]. (1) Apply Coccina (Coccoidea): [Key to species, Germany, P. 308]. filter
- Coccinellidae (Cucujoidea): [Key to species, Germany, P. 351]. (1) Apply Coccinellidae (Cucujoidea): [Key to species, Germany, P. 351]. filter
- Coelenterata (1) Apply Coelenterata filter
- Coleoptera (1) Apply Coleoptera filter
- Coleoptera (Insecta): [Key to families, Germany, P. 317, larvae p. 368]. (1) Apply Coleoptera (Insecta): [Key to families, Germany, P. 317, larvae p. 368]. filter
- Collembola (Insecta): [Key to families, Germany, P. 204]. (1) Apply Collembola (Insecta): [Key to families, Germany, P. 204]. filter
- Copepoda (Crustacea): [Key to orders, Germany, P. 166]. (1) Apply Copepoda (Crustacea): [Key to orders, Germany, P. 166]. filter
- Coreoidea (Pentatomomorpha): [Key to genera, Germany, P. 280]. (1) Apply Coreoidea (Pentatomomorpha): [Key to genera, Germany, P. 280]. filter
- Corixidae (Corixoidea): [Key to species, Germany, P. 269]. (1) Apply Corixidae (Corixoidea): [Key to species, Germany, P. 269]. filter
- Crustacea (1) Apply Crustacea filter
- Crustacea (Arthropoda): [Key to orders, P. 155]. (1) Apply Crustacea (Arthropoda): [Key to orders, P. 155]. filter
- Cryptostigmata (Acari): [Key to genera, Germany, P. 153]. (1) Apply Cryptostigmata (Acari): [Key to genera, Germany, P. 153]. filter
- Culicidae (Nematocera): [Key to genera, Germany, P. 473]. (1) Apply Culicidae (Nematocera): [Key to genera, Germany, P. 473]. filter
- Curculionidae (Curculionoidea): [Key to genera, Germany, P. 361]. (1) Apply Curculionidae (Curculionoidea): [Key to genera, Germany, P. 361]. filter
- Cydnidae (Pentatomoidea): [Key to genera, Germany, P. 284]. (1) Apply Cydnidae (Pentatomoidea): [Key to genera, Germany, P. 284]. filter
- Daphniidae (Cladocera): [Key to genera, Germany, P. 161]. (1) Apply Daphniidae (Cladocera): [Key to genera, Germany, P. 161]. filter
- Decapoda (Eucarida): [Key to families, Germany, P. 167]. (1) Apply Decapoda (Eucarida): [Key to families, Germany, P. 167]. filter
- Delphacidae (Fulgoroidea): [Key to species, Germany, P. 287]. (1) Apply Delphacidae (Fulgoroidea): [Key to species, Germany, P. 287]. filter
- Dermaptera (Insecta): [Key to species, Germany, P. 232]. (1) Apply Dermaptera (Insecta): [Key to species, Germany, P. 232]. filter
- Dermestidae (Dermestoidea): [Key to genera, Germany, P. 349]. (1) Apply Dermestidae (Dermestoidea): [Key to genera, Germany, P. 349]. filter
- Diagnosis (1) Apply Diagnosis filter
- Dictynidae (Araneae): [Key to genera, Germany, P. 123]. (1) Apply Dictynidae (Araneae): [Key to genera, Germany, P. 123]. filter
- Diplura (Insecta): [Key to families, Germany, P. 202]. (1) Apply Diplura (Insecta): [Key to families, Germany, P. 202]. filter
- Diptera (1) Apply Diptera filter
- Diptera (Insecta): [Key to suborders, P. 450 & p. 471, larvae p. 495 (1) Apply Diptera (Insecta): [Key to suborders, P. 450 & p. 471, larvae p. 495 filter
- Documentation (1) Apply Documentation filter
- Dolichopodidae (Orthorrhapha): [Key to subfamilies, Germany, P. 481]. (1) Apply Dolichopodidae (Orthorrhapha): [Key to subfamilies, Germany, P. 481]. filter
- Drepanosiphidae (Aphidoidea): [Key to genera, Germany, P. 302]. (1) Apply Drepanosiphidae (Aphidoidea): [Key to genera, Germany, P. 302]. filter
- Dysderidae (Araneae): [Key to genera, Germany, P. 123]. (1) Apply Dysderidae (Araneae): [Key to genera, Germany, P. 123]. filter
- Dytiscidae (Caraboidea): [Key to species, Germany, P. 334]. (1) Apply Dytiscidae (Caraboidea): [Key to species, Germany, P. 334]. filter
- Echinodermata (1) Apply Echinodermata filter
- Echinodermata (Animalia): [Key to suborders, Germany (marine), P. 504 (1) Apply Echinodermata (Animalia): [Key to suborders, Germany (marine), P. 504 filter
- Elateridae (Elateroidea): [Key to subfamilies, Germany, P. 347 (1) Apply Elateridae (Elateroidea): [Key to subfamilies, Germany, P. 347 filter
- Empididae (Orthorrhapha): [Key to genera, Germany, P. 480]. (1) Apply Empididae (Orthorrhapha): [Key to genera, Germany, P. 480]. filter
- Enchytraeidae (Oligochaeta): [Key to genera, Germany, P. 101]. (1) Apply Enchytraeidae (Oligochaeta): [Key to genera, Germany, P. 101]. filter
- Entomobryidae (Collembola): [Key to genera, Germany, P. 208]. (1) Apply Entomobryidae (Collembola): [Key to genera, Germany, P. 208]. filter
- Ephemeroptera (Insecta): [Key to families, Germany, P. 212, larvae p. (1) Apply Ephemeroptera (Insecta): [Key to families, Germany, P. 212, larvae p. filter
- Eurasia (1) Apply Eurasia filter
- Europe (1) Apply Europe filter
- families, Germany, P. 219]. (1) Apply families, Germany, P. 219]. filter
- Formicidae (Formicoidea): [Key to subfamilies, Germany, P. 390 (1) Apply Formicidae (Formicoidea): [Key to subfamilies, Germany, P. 390 filter
- Fossil]. (1) Apply Fossil]. filter
- Gastrotricha (Animalia): [Diagnostic characters, P. 51]. (1) Apply Gastrotricha (Animalia): [Diagnostic characters, P. 51]. filter
- genera, Germany, P. 233]. (1) Apply genera, Germany, P. 233]. filter
- genera, Germany, P. 342]. (1) Apply genera, Germany, P. 342]. filter
- Geological time periods (1) Apply Geological time periods filter
- Germany, P. 255]. (1) Apply Germany, P. 255]. filter
- Germany, P. 52 (1) Apply Germany, P. 52 filter
- Germany, P. 57]. (1) Apply Germany, P. 57]. filter
- Germany, P. 58]. (1) Apply Germany, P. 58]. filter
- Gnaphosidae (Araneae): [Key to genera, Germany, P. 135]. (1) Apply Gnaphosidae (Araneae): [Key to genera, Germany, P. 135]. filter
- Helminthes (1) Apply Helminthes filter
- Helminthes (Animalia). (1) Apply Helminthes (Animalia). filter
- Hemiptera (1) Apply Hemiptera filter
- Hemiptera (Insecta): [Key to suborders, P. 263]. (1) Apply Hemiptera (Insecta): [Key to suborders, P. 263]. filter
- Heptageniidae (Ephemeroptera): [Key to genera, Germany, P. 215]. (1) Apply Heptageniidae (Ephemeroptera): [Key to genera, Germany, P. 215]. filter
- Heteroptera (Hemiptera): [Key to families, Germany, P. 264]. (1) Apply Heteroptera (Hemiptera): [Key to families, Germany, P. 264]. filter
- Hippoboscidae (Cyclorrhapha): [Key to genera, Germany, P. 493 (1) Apply Hippoboscidae (Cyclorrhapha): [Key to genera, Germany, P. 493 filter
- Hirudinea (Annelida): [Key to species, Germany, P. 104]. (1) Apply Hirudinea (Annelida): [Key to species, Germany, P. 104]. filter
- Homoptera (Hemiptera): [Key to suborders, P. 285]. (1) Apply Homoptera (Hemiptera): [Key to suborders, P. 285]. filter
- Hydrachnellae (Acari): [Key to species, Germany, P. 150]. (1) Apply Hydrachnellae (Acari): [Key to species, Germany, P. 150]. filter
- Hydraenidae (Staphylinoidea): [Key to genera, Germany, P. 342]. (1) Apply Hydraenidae (Staphylinoidea): [Key to genera, Germany, P. 342]. filter
- Hydrophiloidea (Polyphaga): [Key to families, Germany, P. 342 (1) Apply Hydrophiloidea (Polyphaga): [Key to families, Germany, P. 342 filter
- Hymenoptera (1) Apply Hymenoptera filter
- Hymenoptera (Insecta): [Key to families, P. 374, larvae p. 399]. (1) Apply Hymenoptera (Insecta): [Key to families, P. 374, larvae p. 399]. filter
- Hypogastruridae (Collembola): [Key to genera, Germany, P. 205]. (1) Apply Hypogastruridae (Collembola): [Key to genera, Germany, P. 205]. filter
- Insecta (1) Apply Insecta filter
- Insecta (Arthropoda): [Key to orders, P. 190]. (1) Apply Insecta (Arthropoda): [Key to orders, P. 190]. filter
- Invertebrata [Identification guides / / Germany]. (1) Apply Invertebrata [Identification guides / / Germany]. filter
- Isonychidae (Ephemeroptera): [Key to genera, Germany, P. 215]. (1) Apply Isonychidae (Ephemeroptera): [Key to genera, Germany, P. 215]. filter
- Isopoda (Peracarida): [Key to families, Germany, P. 171]. (1) Apply Isopoda (Peracarida): [Key to families, Germany, P. 171]. filter
- Isotomidae (Collembola): [Key to genera, Germany, P. 207]. (1) Apply Isotomidae (Collembola): [Key to genera, Germany, P. 207]. filter
- Key (1) Apply Key filter
- Key to (1) Apply Key to filter
- Key to families, (1) Apply Key to families, filter
- Key to families, Germany, P. 450]. (1) Apply Key to families, Germany, P. 450]. filter
- Key to families, Germany, P. 52]. (1) Apply Key to families, Germany, P. 52]. filter
- Key to genera, Germany, P. 337]. (1) Apply Key to genera, Germany, P. 337]. filter
- Key to orders, (1) Apply Key to orders, filter
- Key to species, (1) Apply Key to species, filter
- Key to species, Germany (marine), P. 504]. (1) Apply Key to species, Germany (marine), P. 504]. filter
- Keys]. (1) Apply Keys]. filter
- Kinorhyncha (Animalia): [Diagnostic characters, P. 51]. (1) Apply Kinorhyncha (Animalia): [Diagnostic characters, P. 51]. filter
- Lachnidae (Aphidoidea): [Key to species, Germany, P. 307]. (1) Apply Lachnidae (Aphidoidea): [Key to species, Germany, P. 307]. filter
- Land zones (1) Apply Land zones filter
- Lepidoptera (1) Apply Lepidoptera filter
- Lepidoptera (Insecta): [Key to families, Germany, P. 415, larvae p. (1) Apply Lepidoptera (Insecta): [Key to families, Germany, P. 415, larvae p. filter
- Leptophlebiidae (Ephemeroptera): [Key to genera, Germany, P. 214]. (1) Apply Leptophlebiidae (Ephemeroptera): [Key to genera, Germany, P. 214]. filter
- Linyphiidae (Araneae): [Key to genera, Germany, P. 128]. (1) Apply Linyphiidae (Araneae): [Key to genera, Germany, P. 128]. filter
- Lumbricidae (Oligochaeta): [Key to genera, Germany, P. 102]. (1) Apply Lumbricidae (Oligochaeta): [Key to genera, Germany, P. 102]. filter
- Lycosidae (Araneae): [Key to genera, Germany, P. 130]. (1) Apply Lycosidae (Araneae): [Key to genera, Germany, P. 130]. filter
- Lygaeidae (Lygaeoidea): [Key to genera, Germany, P. 276]. (1) Apply Lygaeidae (Lygaeoidea): [Key to genera, Germany, P. 276]. filter
- Macrothricidae (Cladocera): [Key to genera, Germany, P. 162]. (1) Apply Macrothricidae (Cladocera): [Key to genera, Germany, P. 162]. filter
- Mallophaga (Insecta): [Key to families, Germany, P. 255]. (1) Apply Mallophaga (Insecta): [Key to families, Germany, P. 255]. filter
- Mammalia (1) Apply Mammalia filter
- Marine (1) Apply Marine filter
- Mecoptera (Insecta): [Key to families, Germany, P. 448]. (1) Apply Mecoptera (Insecta): [Key to families, Germany, P. 448]. filter
- Meloidae (Tenebrionoidea): [Key to species, Germany, P. 354]. (1) Apply Meloidae (Tenebrionoidea): [Key to species, Germany, P. 354]. filter
- Mesostigmata (Acari): [Key to suborders, Germany, P. 146]. (1) Apply Mesostigmata (Acari): [Key to suborders, Germany, P. 146]. filter
- Metastigmata (Acari): [Key to families, Germany, P. 148]. (1) Apply Metastigmata (Acari): [Key to families, Germany, P. 148]. filter
- Miridae (Miroidea): [Key to species, Germany, P. 270]. (1) Apply Miridae (Miroidea): [Key to species, Germany, P. 270]. filter
- Mollusca (1) Apply Mollusca filter
- Mollusca (Animalia): [Key to classes, Germany (marine & freshwater), P. (1) Apply Mollusca (Animalia): [Key to classes, Germany (marine & freshwater), P. filter
- Mordellidae (Tenebrionoidea): [Key to species, Germany, P. 353]. (1) Apply Mordellidae (Tenebrionoidea): [Key to species, Germany, P. 353]. filter
- Muscidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 492]. (1) Apply Muscidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 492]. filter
- Mycetophilidae (Nematocera): [Key to subfamilies, Germany, P. 474]. (1) Apply Mycetophilidae (Nematocera): [Key to subfamilies, Germany, P. 474]. filter
- Myriapoda (Arthropoda): [Key to orders, P. 179]. (1) Apply Myriapoda (Arthropoda): [Key to orders, P. 179]. filter
- Mysidacea (Peracarida): [Key to genera, Germany, P. 170]. (1) Apply Mysidacea (Peracarida): [Key to genera, Germany, P. 170]. filter
- Neanuridae (Collembola): [Key to genera, Germany, P. 205]. (1) Apply Neanuridae (Collembola): [Key to genera, Germany, P. 205]. filter
- Nemathelminthes (Animalia): [Key to orders, Germany, P. 51]. (1) Apply Nemathelminthes (Animalia): [Key to orders, Germany, P. 51]. filter
- Nematoda (1) Apply Nematoda filter
- Nematoda (Animalia): [Diagnostic characters, P. 51 (1) Apply Nematoda (Animalia): [Diagnostic characters, P. 51 filter
- Nematomorpha (Animalia): [Diagnostic characters, P. 51]. (1) Apply Nematomorpha (Animalia): [Diagnostic characters, P. 51]. filter
- Nemertinea (Animalia): [Key to families, Germany, P. 49]. (1) Apply Nemertinea (Animalia): [Key to families, Germany, P. 49]. filter
- Nomenclature (1) Apply Nomenclature filter
- North Atlantic (1) Apply North Atlantic filter
- Odonata (Insecta): [Key to suborders, P. 218, larvae p. 224 (1) Apply Odonata (Insecta): [Key to suborders, P. 218, larvae p. 224 filter
- Oedemeridae (Tenebrionoidea): [Key to species, Germany, P. 354]. (1) Apply Oedemeridae (Tenebrionoidea): [Key to species, Germany, P. 354]. filter
- Oestridae (Cyclorrhapha): [Key to genera, Germany, P. 495]. (1) Apply Oestridae (Cyclorrhapha): [Key to genera, Germany, P. 495]. filter
- Oligochaeta (Annelida): [Key to families, Germany, P. 98]. (1) Apply Oligochaeta (Annelida): [Key to families, Germany, P. 98]. filter
- Onychiuridae (Collembola): [Key to genera, Germany, P. 206]. (1) Apply Onychiuridae (Collembola): [Key to genera, Germany, P. 206]. filter
- Opiliones (Arachnida): [Key to families, Germany, P. 140]. (1) Apply Opiliones (Arachnida): [Key to families, Germany, P. 140]. filter
- Ostracoda (Crustacea): [Key to families, Germany, P. 165]. (1) Apply Ostracoda (Crustacea): [Key to families, Germany, P. 165]. filter
- Otitidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 490]. (1) Apply Otitidae (Cyclorrhapha): [Key to subfamilies, Germany, P. 490]. filter
- P. 211]. (1) Apply P. 211]. filter
- Palaearctic region (1) Apply Palaearctic region filter
- Pemphigidae (Aphidoidea): [Key to genera, Germany, P. 301]. (1) Apply Pemphigidae (Aphidoidea): [Key to genera, Germany, P. 301]. filter
- Pentatomidae (Pentatomoidea): [Key to genera, Germany, P. 282]. (1) Apply Pentatomidae (Pentatomoidea): [Key to genera, Germany, P. 282]. filter
- Phalangiidae (Opiliones): [Key to subfamilies, Germany, P. 141]. (1) Apply Phalangiidae (Opiliones): [Key to subfamilies, Germany, P. 141]. filter
- Philodromidae (Araneae): [Key to genera, Germany, P. 136]. (1) Apply Philodromidae (Araneae): [Key to genera, Germany, P. 136]. filter
- Phoridae (Cyclorrhapha): [Key to subfamilies, Germany, P. 482]. (1) Apply Phoridae (Cyclorrhapha): [Key to subfamilies, Germany, P. 482]. filter
- Phthiraptera (Insecta): [Key to orders, P. 255 (1) Apply Phthiraptera (Insecta): [Key to orders, P. 255 filter
- Pipunculidae (Cyclorrhapha): [Key to genera, Germany, P. 482]. (1) Apply Pipunculidae (Cyclorrhapha): [Key to genera, Germany, P. 482]. filter
- Pisces (1) Apply Pisces filter
- Platyhelminthes (1) Apply Platyhelminthes filter
- Platyhelminthes (Animalia): [Key to classes, P. 40]. (1) Apply Platyhelminthes (Animalia): [Key to classes, P. 40]. filter
- Plecoptera (Insecta): [Key to families, Germany, P. 228, larvae p. 231]. (1) Apply Plecoptera (Insecta): [Key to families, Germany, P. 228, larvae p. 231]. filter
- Polychaeta (Annelida): [Key to families, Germany, P. 94]. (1) Apply Polychaeta (Annelida): [Key to families, Germany, P. 94]. filter
- Polyphemidae (Cladocera): [Key to genera, Germany, P. 164]. (1) Apply Polyphemidae (Cladocera): [Key to genera, Germany, P. 164]. filter
- Porcellionidae (Isopoda): [Key to genera, Germany, P. 174]. (1) Apply Porcellionidae (Isopoda): [Key to genera, Germany, P. 174]. filter
- Porifera (1) Apply Porifera filter
- Porifera (Animalia): [Key to genera, Germany (marine), P. 32 (1) Apply Porifera (Animalia): [Key to genera, Germany (marine), P. 32 filter
- Priapulida (Animalia): [Diagnostic characters, P. 51]. (1) Apply Priapulida (Animalia): [Diagnostic characters, P. 51]. filter
- Prostigmata (Acari): [Key to suborders, Germany, P. 148]. (1) Apply Prostigmata (Acari): [Key to suborders, Germany, P. 148]. filter
- Protozoa (1) Apply Protozoa filter
- Protozoa: [Key to subclasses, P. 6]. (1) Apply Protozoa: [Key to subclasses, P. 6]. filter
- Protura (Insecta): [Key to families, Germany, P. 202]. (1) Apply Protura (Insecta): [Key to families, Germany, P. 202]. filter
- Pseudoscorpionida (Arachnida): [Key to families, Germany, P. 111]. (1) Apply Pseudoscorpionida (Arachnida): [Key to families, Germany, P. 111]. filter
- Psilidae (Cyclorrhapha): [Key to genera, Germany, P. 490]. (1) Apply Psilidae (Cyclorrhapha): [Key to genera, Germany, P. 490]. filter
- Psocoptera (Insecta): [Key to families, Germany, P. 250]. (1) Apply Psocoptera (Insecta): [Key to families, Germany, P. 250]. filter
- Psyllina (Psylloidea): [Key to species, Germany, P. 310]. (1) Apply Psyllina (Psylloidea): [Key to species, Germany, P. 310]. filter
- Publications (1) Apply Publications filter
- Reduviidae (Reduvoidea): [Key to species, Germany, P. 275]. (1) Apply Reduviidae (Reduvoidea): [Key to species, Germany, P. 275]. filter
- Reptilia (1) Apply Reptilia filter
- Rhagionidae (Orthorrhapha): [Key to genera, Germany, P. 477]. (1) Apply Rhagionidae (Orthorrhapha): [Key to genera, Germany, P. 477]. filter
- Rotifera (Animalia): [Diagnostic characters, P. 51 (1) Apply Rotifera (Animalia): [Diagnostic characters, P. 51 filter
- Rotifera [Identification guides / / ] [Germany / / (1) Apply Rotifera [Identification guides / / ] [Germany / / filter
- Saldidae (Leptopodoidea): [Key to genera, Germany, P. 276]. (1) Apply Saldidae (Leptopodoidea): [Key to genera, Germany, P. 276]. filter
- Salticidae (Araneae): [Key to genera, Germany, P. 137]. (1) Apply Salticidae (Araneae): [Key to genera, Germany, P. 137]. filter
- Scarabaeoidea (Polyphaga): [Key to species, Germany, P. 343]. (1) Apply Scarabaeoidea (Polyphaga): [Key to species, Germany, P. 343]. filter
- Scolytidae (Curculionidae): [Key to species, Germany, P. 367]. (1) Apply Scolytidae (Curculionidae): [Key to species, Germany, P. 367]. filter
- Silphidea (Polyphaga): [Key to species, Germany, P. 336]. (1) Apply Silphidea (Polyphaga): [Key to species, Germany, P. 336]. filter
- Siphlonuridae (Ephemeroptera): [Key to genera, Germany, P. 215]. (1) Apply Siphlonuridae (Ephemeroptera): [Key to genera, Germany, P. 215]. filter
- Siphonaptera (Insecta): [Key to superfamilies, Germany, P. 401]. (1) Apply Siphonaptera (Insecta): [Key to superfamilies, Germany, P. 401]. filter
- Sminthuridae (Collembola): [Key to genera, Germany, P. 209]. (1) Apply Sminthuridae (Collembola): [Key to genera, Germany, P. 209]. filter
- species, Germany (marine), P. 32]. (1) Apply species, Germany (marine), P. 32]. filter
- species, Germany, P. 347]. (1) Apply species, Germany, P. 347]. filter
- species, Germany, P. 350]. (1) Apply species, Germany, P. 350]. filter
- species, Germany, P. 390]. (1) Apply species, Germany, P. 390]. filter
- species, Germany, P. 493]. (1) Apply species, Germany, P. 493]. filter
- Staphylinidae (Staphylinoidea): [Key to subfamilies, Germany, P. 337 (1) Apply Staphylinidae (Staphylinoidea): [Key to subfamilies, Germany, P. 337 filter
- Stratiomyidae (Orthorrhapha): [Key to subfamilies, Germany, P. 475 (1) Apply Stratiomyidae (Orthorrhapha): [Key to subfamilies, Germany, P. 475 filter
- Syrphidae (Cyclorrhapha): [Key to genera, Germany, P. 483]. (1) Apply Syrphidae (Cyclorrhapha): [Key to genera, Germany, P. 483]. filter
- Systematics (1) Apply Systematics filter
- Tabanidae (Orthorrhapha): [Key to species, Germany, P. 476]. (1) Apply Tabanidae (Orthorrhapha): [Key to species, Germany, P. 476]. filter
- Tardigrada (Animalia): [Key to orders, Germany, P. 107]. (1) Apply Tardigrada (Animalia): [Key to orders, Germany, P. 107]. filter
- Taxonomy (1) Apply Taxonomy filter
- Tenebrionidae (Tenebrionoidea): [Key to species, Germany, P. 353]. (1) Apply Tenebrionidae (Tenebrionoidea): [Key to species, Germany, P. 353]. filter
- Tentaculata (Animalia): [Key to classes, Germany (marine), P. 499]. (1) Apply Tentaculata (Animalia): [Key to classes, Germany (marine), P. 499]. filter
- Tephritidae (Cyclorrhapha): [Key to genera, Germany, P. 490]. (1) Apply Tephritidae (Cyclorrhapha): [Key to genera, Germany, P. 490]. filter
- Tetragnathidae (Araneae): [Key to genera, Germany, P. 123]. (1) Apply Tetragnathidae (Araneae): [Key to genera, Germany, P. 123]. filter
- Therevidae (Orthorrhapha): [Key to species, Germany, P. 478]. (1) Apply Therevidae (Orthorrhapha): [Key to species, Germany, P. 478]. filter
- Theridiidae (Araneae): [Key to genera, Germany, P. 128]. (1) Apply Theridiidae (Araneae): [Key to genera, Germany, P. 128]. filter
- Thysanoptera (Insecta): [Key to families, Germany, P. 259]. (1) Apply Thysanoptera (Insecta): [Key to families, Germany, P. 259]. filter
- Tipulidae (Nematocera): [Key to genera, Germany, P. 473]. (1) Apply Tipulidae (Nematocera): [Key to genera, Germany, P. 473]. filter
- to genera, Germany, P. 475]. (1) Apply to genera, Germany, P. 475]. filter
- Trichoptera (Insecta): [Key to families, Germany, P. 404, larvae p. (1) Apply Trichoptera (Insecta): [Key to families, Germany, P. 404, larvae p. filter
- Urochordata [Identification guides / (1) Apply Urochordata [Identification guides / filter
- zones (1) Apply zones filter
- Zygentoma [Identification guides / / Germany (1) Apply Zygentoma [Identification guides / / Germany filter