| Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan … Y Oya, H Kajihara Zootaxa 4282 (3), 526–542-526–542, 2017 | 32 | 2017 |
| Molecular phylogenetic analysis of Acotylea (Platyhelminthes: Polycladida) Y Oya, H Kajihara Zoological science 37 (3), 271-279, 2020 | 24 | 2020 |
| Description of a new species of Paraplehnia (Polycladida, Stylochoidea) from Japan, with inference on the phylogenetic position of Plehniidae Y Oya, T Kimura, H Kajihara ZooKeys 864, 1, 2019 | 11 | 2019 |
| A new species of Zeuxo (Crustacea: Peracarida: Tanaidacea) from Japan, with remarks on carapace pigmentation as a potentially useful taxonomic character N Okamoto, Y Oya, K Kakui Marine Biology Research 16 (5), 411-422, 2020 | 10 | 2020 |
| A new species of Prosthiostomum (Platyhelminthes: Polycladida) from Shirahama, Japan A Tsuyuki, Y Oya, H Kajihara Species Diversity 24 (2), 137-143, 2019 | 10 | 2019 |
| A new bathyal species of Cestoplana (Polycladida: Cotylea) from the West Pacific Ocean Y Oya, H Kajihara Marine Biodiversity 49, 905-911, 2019 | 10 | 2019 |
| A New Species of Zygantroides (Platyhelminthes: Polycladida) from Amakusa, Japan Y Oya, A Tsuyuki, H Kajihara Species Diversity 25 (2), 189-196, 2020 | 8 | 2020 |
| A new species of Phaenoplana (Platyhelminthes: Polycladida) from the Ogasawara Islands Y Oya, H Kajihara Species Diversity 24 (1), 1-6, 2019 | 8 | 2019 |
| Description of Pericelis flavomarginata sp. nov.(Polycladida: Cotylea) and its predatory behavior on a scaleworm. A Tsuyuki, Y Oya, N Jimi, H Kajihara Zootaxa 4894 (3), zootaxa. 4894.3. 6-zootaxa. 4894.3. 6, 2020 | 6 | 2020 |
| Benthic deep‐sea fauna in the Sea of Kumano, Mie Prefecture, Japan T Kimura Annuals of Field Research and Technology Mie University 16, 1, 2018 | 6 | 2018 |
| Bioaccumulation and metabolism of polybrominated diphenyl ethers (PBDEs) in coenobitid hermit crabs from marine litter-polluted beaches in remote islands N Tanaka, N Takada, M Takahashi, BG Yeo, Y Oya, I Watanabe, Y Fujita, ... Marine Pollution Bulletin 190, 114812, 2023 | 5 | 2023 |
| Reversible shifts between interstitial and epibenthic habitats in evolutionary history: molecular phylogeny of the marine flatworm family Boniniidae (Platyhelminthes … A Tsuyuki, Y Oya, H Kajihara Plos one 17 (11), e0276847, 2022 | 4 | 2022 |
| Description and phylogenetic relationships of a new genus of Planoceridae (Polycladida, Acotylea) from Shimoda, Japan Y Oya, H Kajihara Journal of the Marine Biological Association of the United Kingdom 101 (1 …, 2021 | 4 | 2021 |
| Description of a new species of Alloioplana (Polycladida: Stylochoplanidae) with an inference on its phylogenetic position in Leptoplanoidea Y Oya, A Tsuyuki, H Kajihara Proceedings of the Biological Society of Washington 134 (1), 306-317, 2021 | 4 | 2021 |
| Descriptions of two new species of Armatoplana (Polycladida: Stylochoplanidae) from the coasts of Japan, with their phylogenetic positions in Leptoplanoidea. Y Oya, A Tsuyuki, H Kajihara Zootaxa 5178 (5), 433-452, 2022 | 3 | 2022 |
| Two new species of the marine flatworm Pericelis (Platyhelminthes: Polycladida) from southwestern Japan with an amendment of the generic diagnosis based on … A Tsuyuki, Y Oya, H Kajihara Marine Biology Research 17 (9-10), 946-959, 2021 | 3 | 2021 |
| Theama japonica sp. nov., an interstitial polyclad flatworm showing a wide distribution along Japanese coasts A Tsuyuki, Y Oya, N Jimi, N Hookabe, S Fujimoto, H Kajihara Zoological science 40 (3), 262-272, 2023 | 2 | 2023 |
| Distribution of trace element concentrations in invertebrate species collected from Tokyo Bay, Japan Y OYA, H TAKADA, K MIZUKAWA, M OHJI, I WATANABE Environmental Monitoring and Contaminants Research 2, 67-87, 2022 | 2 | 2022 |
| First record of Stylostomum ellipse (Dalyell, 1853)(Platyhelminthes, Polycladida) from the Pacific Ocean. A Tsuyuki, Y Oya, H Kajihara Check List 16 (3), 2020 | 1 | 2020 |
| Testing the Species Status of the Chromodorid Nudibranch Goniobranchus aureopurpureus (Mollusca: Gastropoda) H Ishiyama, Y Oya, NG Wilson, H Kajihara Species Diversity 29 (1), 141-150, 2024 | | 2024 |
