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Selected Works of
Hendrik Freitag
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Professor and Department Research Coordinator, Biology Department
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Dr. Freitag’s research focuses mainly on freshwater arthropods of the Philippines and the Oriental Region.
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About Hendrik Freitag
Dr. Freitag’s research focuses mainly on freshwater arthropods of the Philippines and the Oriental Region.
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Professor / Department Research Coordinator,
Ateneo de Manila University
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Biology Department
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Entomology
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Featured Works
Featured Works
(42)
Article
A Global Agenda for Advancing Freshwater Biodiversity Research
Biology Faculty Publications (2021)
Alain Maasri, Sonja C. Jähnig, Hendrik Freitag and 93 co-authors
Global freshwater biodiversity is declining dramatically, and meeting the challenges of this crisis requires bold goals and the mobilisation of ...
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Article
Two New Species of Byrrhinus Motschulsky, 1858 (Coleoptera, Limnichidae, Limnichinae ...
Biology Faculty Publications (2021)
Emmanuel D Delocado and Hendrik Freitag
Two new species of Limnichidae beetles, Byrrhinus negrosensis sp. nov. and Byrrhinus villarini sp. nov., are described from the Island ...
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Article
An Additional New Species and Records of Neoperla Needham, 1905 ...
Biology Faculty Publications (2021)
Arthien Lovell P Pelingen, Dávid Murányi and Hendrik Freitag
We report a new species and new records of Neoperla species from the Philippines. Neoperla pangantihoni sp. n. from Palawan ...
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Article
Additional Records and New Species of Hydraena Kugelann, 1794 (Insecta ...
Biology Faculty Publications (2021)
Hendrik Freitag and Marta Hornyák
Three new species of the genus Hydraena Kugelann; 1794 of the Philippine Island of Palawan are described in detail; namely ...
Link
Article
Serum Biochemical Profile of Captive-Bred Philippine Crocodiles (Crocodylus Mindorensis Schmidt ...
Biology Faculty Publications (2021)
Janice A Ragaza, Stephanie F Velasquez, Marian Samantha M Asuncion, Elyssa Marie F Torres, et al.
The Philippine crocodiles Crocodylus mindorensis Schmidt; 1935 are a critically endangered species that necessitate minimally invasive diagnostic tools for their ...
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Article
Hydraena (s.str.) dinarica, new species (Coleoptera: Hydraenidae) along with ...
Biology Faculty Publications (2021)
Hendrik Freitag, Rick de Vries, Marta Paterno, Simone Maestri, et al.
Background Long-palped Water Beetles were collected during a taxon expedition in Montenegro which involved citizen scientists, students and taxonomists. The ...
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Article
Ancyronyx lianlabangorum sp. nov., a new spider riffle beetle from ...
Biology Faculty Publications (2020)
Hendrik Freitag, Manfred A Jach, Jan Kodada, Zuzana Čiamporová-Zaťovičová, et al.
Ancyronyx lianlabangorum sp. nov. (Coleoptera, Elmidae), a new spider riffle beetle from the Kelabit Highlands (Sarawak, northern Borneo), is described. ...
Link
Article
Review of the genus Rhagovelia Mayr, 1865 (Insecta: Heteroptera: Veliidae ...
Biology Faculty Publications (2020)
Herbert Zettel, Alice Laciny and Hendrik Freitag
This paper reports eight species of Rhagovelia Mayr, 1865, from the Palawan biogeographic region, including three that are new to ...
Link
Article
Contributions to the knowledge of water bugs in Mindoro Island ...
Biology Faculty Publications (2020)
Arthien Lovell Pelingen, Herbert Zettel, Clister V Pangantihon, Kyra Mari Dominique Aldaba, et al.
This survey aims to provide an updated species checklist of aquatic and semi-aquatic bugs in the intra-Philippine biogeographic Region of ...
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Article
Taxonomic revision of Agraphydrus RÉGIMBART , 1903 V. Philippine species and ...
Biology Faculty Publications (2020)
Hendrik Freitag and Albrecht Komarek
The genus Agraphydrus RÉGIMBART , 1903 (Coleoptera: Hydrophilidae) of the Republic of the Philippines is taxonomically reviewed aided by COI ...
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Article
Description of Neoperla mindoroensis sp. nov., the first record of ...
Biology Faculty Publications (2020)
Hendrik Freitag and Arthien Lovell Pelingen
The new stonefly species, Neoperla mindoroensis sp. nov. (Perlidae), from Mindoro island is described. The new species is assigned to ...
Link
Article
Diversity of Trichoptera emergence and their longitudinal distribution along streams ...
Biology Faculty Publications (2020)
Hendrik Freitag and Wolfram Mey
Trichoptera emergences were cumulatively collected from two rivers in central Palawan over 11 months by use of specially modified emergence ...
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Article
Ancyronyx clisteri, a new spider riffle beetle species from Borneo ...
Biology Faculty Publications (2020)
Jan Kodada, Manfred A Jach, Hendrik Freitag, Zuzana Čiamporová-Zaťovičová, et al.
Ancyronyx clisteri sp. nov. (Coleoptera, Elmidae) a new spider riffle beetle discovered from northern Borneo (Brunei; Sabah and Sarawak, Malaysia) ...
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Article
Integrative taxonomy of the genus Dudgeodes Sartori, 2008 (Insecta, Ephemeroptera ...
Biology Faculty Publications (2020)
Jhoana M Garces, Michel Sartori and Hendrik Freitag
COI sequences were used as an initial clustering method to delimit putative species of the genus Dudgeodes in the Philippines. ...
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Article
Additional new species of Grouvellinus Champion 1923 (Insecta, Coleoptera, Elmidae ...
Biology Faculty Publications (2020)
Hendrik Freitag, Christian Molls, Aglaia M Bouma, Jhoana M Garces, et al.
Four new species, Grouvellinus nigerquadratus sp. nov., G. cruxniger sp. nov., G. luciaensis sp. nov., and G. borneensis sp. nov., ...
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Article
In Memoriam: Ignacio Ribera (1963–2020)
Biology Faculty Publications (2020)
Emmanuel D Delocado, Michael Balke and Hendrik Freitag
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Article
A Rapid and Accurate MinION-Based Workflow for Tracking Species Biodiversity ...
Biology Faculty Publications (2019)
Hendrik Freitag, Simone Maestri, Emanuela Cosentino, Marta Paterno, et al.
Genetic markers (DNA barcodes) are often used to support and confirm species identification. Barcode sequences can be generated in the ...
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Article
New Records of Philippine True Bugs (Hemiptera: Heteroptera) with Coastal ...
Biology Faculty Publications (2019)
Hendrik Freitag, Herbert Zettel and Clister V Pangantihon
We present new records of Gerromorpha and Leptopodomorpha (Insecta: Hemiptera: Heteroptera) from the Philippines (mainly from central Visayan islands and ...
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Article
New species of caddisflies (Insecta: Trichoptera) from emergence traps at ...
Biology Faculty Publications (2019)
Hendrik Freitag and Wolfram Mey
New species of Trichoptera were identified in samples collected from emergence traps along two streams (Cabayugan River and Panaguman River) ...
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Article
Aquatic Polyphaga (Insecta: Coleoptera) from Kampong Speu Province, Cambodia
Biology Faculty Publications (2018)
Hendrik Freitag, Bros Doeurk, Soksan Chhorn, Chandara Khin, et al.
We present the results of a faunistic inventory undertaken on aquatic Polyphaga beetles as part of a workshop organised by ...
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Article
Sparsorythus sescarorum, new species from Mindoro, Philippines (Ephemeroptera, Tricorythidae)
Biology Faculty Publications (2018)
Jhoana Garces, Ernst Bauernfeind and Hendrik Freitag
A new mayfly species, Sparsorythus sescarorum sp. n. (Tricorythidae) is described from Mindoro Island, Philippines. Nymphs are characterized by the ...
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Book
Status, trends and future dynamics of biodiversity and ecosystems underpinning ...
Biology Faculty Publications (2018)
Hendrik Freitag
Link
Article
Three new species of Grouvellinus Champion, 1923 from Maliau Basin ...
Biology Faculty Publications (2018)
Hendrik Freitag, Iva Njunjic and Clister V Pangantihon
Further results are presented of the first field course at Maliau Basin, Malaysian Borneo organized by Taxon Expeditions, an organization ...
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Article
A taxonomic review of the genus Ancyronyx Erichson, 1847 from ...
Biology Faculty Publications (2017)
Jan Kodada and Hendrik Freitag
Ten new species of the genus Ancyronyx Erichson, 1847 from Sulawesi are described along with additions to the original description ...
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Article
Checklist of the aquatic Hemiptera (Heteroptera: Gerromorpha and Nepomorpha) of ...
Biology Faculty Publications (2017)
Hendrik Freitag, Herbert Zettel, Sokha Kheam and Sophany Phauk
Based on specimens (Natural History Museum Vienna, Cambodian Entomology Initiatives at the Royal University of Phnom Penh, private collection of ...
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