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Wissenschaftliche Originalarbeiten FREITAG, H. & ZETTEL, H. 2014 Aquatic Coleoptera of the Lake Manguao Catchment, Palawan, the Philippines. Philippine Scientist 50 (2013): 1-38. FREITAG, H. 2014 A Mega-Diverse Water Beetle Genus (Coleoptera: Hydraenidae: Hydraena Kugelann) Commonly Overlooked in Southeast Asia and its Potential Use for Environmental Biomonitoring. Entomology, Ornithology & Herpetology 3 (2): 1-5. FREITAG, H. 2013 Hydraena (Hydraenopsis) ateneo, new species (Coleoptera: Hydraenidae) and other aquatic Polyphaga from a small habitat patch in a highly urbanized landscape of Metro Manila, Philippines. Zookeys 329: 921. FREITAG, H. 2013. Ancyronyx Erichson, 1847 (Coleoptera, Elmidae) from Mindoro, Philippines, with description of the larvae and two new species using DNA sequences for the assignment of the developmental stages. Zookeys 321: 3564. doi: 10.3897/zookeys.321.5395 FREITAG, H. & ZETTEL, H. 2013. Aquatic Heteroptera of the Lake Manguao Catchment, Palawan and new Rank of Rhagovelia kawakamii hoberlandti Hungerford & Matsuda, 1961, stat.n. Phil. J. Syst. Biol. 6 (2012): 5480. MEY, W. & FREITAG, H. 2013. Trichoptera of Mindoro, the Philippines I. New species and records from the Baroc River Catchment, Roxas, Oriental Mindoro (Insecta, Trichoptera). Esperiana 18: 259269. ZETTEL, H., PANGANTIHON, C.V. & FREITAG, H. 2013. A new intertidal shore bug (Heteroptera: Saldidae) from the Philippines. Zeitschrift der Arbeitsgemeinschaft Österreichischer Entomologen 65: 8186. FREITAG, H. 2012. Ancyronyx jaechi sp.n. from Sri Lanka, the first record of the genus Ancyronyx Erichson, 1847 (Insecta: Coleoptera: Elmidae) from the Indian Subcontinent, and a world checklist of species. Zootaxa 3382: 5965. ZETTEL, H., LANE, D.J.W., PANGANTIHON, C.V. & FREITAG, H. 2012. Notes on Notonectidae (Insecta: Heteroptera) from southeastern Asia, mostly from Brunei and the Philippines. Acta Entomologica Musei Nationalis Pragae 52(1): 2948. FREITAG, H. 2012. Revision of the Genus Insulamon Ng & Takeda, 1992 (Crustacea: Decapoda: Potamidae) with description of four new species. Raffles Bulletin of Zoology 60: 37-55. FREITAG, H. & BALKE, M. 2011. Larvae and a new species of Ancyronyx Erichson 1847 (Insecta: Coleoptera: Elmidae) from Palawan, Philippines, using DNA sequences for the assignment of the developmental stages. Zookeys 136: 4782. FREITAG, H. & PANGANTIHON, C. V. 2010. Aquatic Coleoptera and Heteroptera of the Lake Naujan National Park, Mindoro Oriental, the Philippines. Philippine Scientist: 47: 126-173. RULIK, B., WARTHEMANN, G., KRÜGER, D., QUAST, T., OSTERLOH, S., OSTERLOH, K. & FREITAG, H. 2009. Kommentierte Artenlisten der Farn- und Blütenpflanzen und Insekten (Diptera, Odonata, Coleoptera: Bupestridae) des GEO--Artentages in Dessau-Roßlau 2009 und vorangegangener Jahre mit Erstnachweisen von Brachypeza radiata JENKINSON, 1908 und Trichonta paraterminalis ZAITZEV, 1999 (Insecta: Diptera: Mycetophilidae) in der BRD. Naturwissenschaftliche Beiträge Museum Dessau 21:87-106. FRITZ, U. & FREITAG, H. 2008. Geoemydid turtles of the Sulu Archipelago, Philippines, and a historical record of Cyclemys dentata (Gray, 1831) for Siasi Island. Herpetology Notes 1: 11-12. FREITAG, H. 2008. A new species of Prionosolus JÄCH & KODADA from Palawan, Philippines (Coleoptera: Elmidae). Koleopterologische Rundschau 78: 297-303. BRAASCH, D. & FREITAG, H. 2008. Palawaneuria, a new subgenus of Compsoneuria and new species of Compsoneuria and Afronurus (Ephemeroptera, Heptageniidae) from Palawan, Philippines. Dtsch. Entomol. Z. 55: 117-128. FREITAG, H. & JÄCH, M. 2007. The genus Ancyronyx ERICHSON, 1847 (Coleoptera, Elmidae) in Palawan and Busuanga, (Philippines) with descriptions of six new species. Zootaxa 1590: 37-59. FREITAG, H. & JÄCH, M. A. 2007. Revision of the Palawan and Busuanga species of Hydraena KUGELANN (Coleoptera: Hydraenidae) with descriptions of eleven new species and redescription of H. (Hydraenopsis) scabra D'ORCHYMONT 1923. Zootaxa: 1431: 1-44 FREITAG, H. 2005. Longitudinal Zonation Patterns and Determinants in Decapoda (Crustacea) in Rivers of Palawan Island, the Philippines. Archiv für Hydrobiologie Supplement 151(3): 243-268 FREITAG, H. 2005. Aquatic insect emergence collections of rivers in the St. Paul National Park, Palawan, Philippines and methodological implications for ecological and biodiversity studies. Journal of Aquatic Science, 2(2): 66-78. LEE, C.-F., FREITAG, H. & JÄCH, M. 2005. Water Penny beetles of Palawan, Philippines, with descriptions of two new species and one new subspecies (Coleoptera: Psephenidae). Aquatic Insects 27 (3): 179-191. FREITAG, H. 2004. Composition and Longitudinal Patterns of Aquatic Insects Emergence in Small Rivers of Palawan Island, the Philippines. Internat ional Rev iew of Hydrobiol ogy 89 (4) : 375-391. FREITAG, H. 2004. Adaptations of an Emergence Trap for Use in Tropical Streams. Internat ional Rev iew of Hydrobiol ogy 89: 363-374. FREITAG, H. & YEO, D. C. J. 2004. Two new Species of Parathelphusa H. MILNE EDWARDS, 1853, from the Philippines (Crustacea: Decapoda: Brachyura: Parathelphusidae). Raffles Bulletin of Zoology 52(1): 227-237. FREITAG, H., STUBBE, M. & HEIDECKE, D. 2001. Das Makrozoobenthos in der Zönosestruktur und die Saprobie unter Einfluß des Elbe-Bibers. Säugetierkundliche Informationen 5(25): 35-56. FREITAG, H., ZAHN, E. & GOELTENBOTH, F. 1999. Freshwater investigations on Apid Island, Inopacan, Leyte, Philippines: results of lithotelmic investigations. Annals of Tropical Research 21: 41-53. Populärwissenschaftliche Arbeiten BANKERT, D., MULCH, D., FREITAG, H., KIESE, T., KORFF, P., MAUSBACH, S., SCHMIEDEKE, S. STAUDINGER, A. und STIEL, E. 1996. - Sequenzen. Landschaft und Ortschaft, entwerfen und verwerfen. In: STIFTUNG BAUHAUS DESSAU, AKADEMIE. (Hrsg.), Sommerschule 1995. Stadtlandschaft im Übergang. p. 12-19. Plakat: Begrünung in Dessau. 1995. STADTVERWALTUNG DESSAU (Hrsg.) Info-Blatt: Neue Lebensräume No.11: Begrünung von Fassaden und Wänden. 1995. STADTVERWALTUNG DESSAU (Hrsg.) Plakat: Auen an Elbe und Mulde. 1996. STADTVERWALTUNG DESSAU (Hrsg.) Dissertation FREITAG, H. 2004. Makroinvertebraten-Gemeinschaften in Fliessgewässern des St. Paul Nationalparks, Palawan, Philippinen. Online-Dissertation. FB Biologie, Martin-Luther-Universität Halle-Wittenberg. pp. 1-32.
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