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Department of Biological Sciences
Molecular Neuroscience
Developmental Biology
Cellular Genetics
Molecular Genetics
Plant Development and Physiology
Cellular Biochemistry
Evolutionary Genetics
Plant Environmental Responses
Environmental Microbiology
Animal Ecology
Plant Ecology
Systematic Zoology
Systematic Botany
Photosynthetic Microbial Consortia
Photo Systematic Zoology Laboratory
Our laboratory is an interdisciplinary unit dealing with a variety of research topics integrating a wide range of components such as taxonomy and systematics, animal behaviour, ecology, biogeography, biodiversity informatics. We focus on terrestrial invertebrates, mainly insects and arachnids. Our highly international group comprises members from a multiple countries and staff from Japan and Australia.
Asc Prof Katsuyuki Eguchi e-mail
Asc Prof Adam L. Cronin e-mail
Katsuyuki Eguchi
Systematics and Biogeography of Terrestrial Invertebrates
We are conducting systematic and phylogeographical studies on various groups of terrestrial arthropods, mainly in East Asia and Southeast Asia. In addition, we are studying the distribution, habitat and life history of alien ants (Formicidae) on islands such as the Ogasawara Islands and the Izu Islands, and are contributing to control measures. We welcome Asian students and young researchers who are interested in taxonomy and phylogeography as graduate students and postdocs.

For details see:
Behavioural and Evolutionary Ecology of Social Insects and Others
Adam L. Cronin
(A) Myrmecina nipponica (B) Netlogo model used to assess the importance of spatial structure in the evolution of alternative life-history strategies, in this case alternative reproductive strategies in ant communities.
Social Organisms as Complex Systems
Highly integrated animal societies such as colonies of social insects can achieve complex tasks far beyond the capabilities of any single individual. These often sophisticated collective tasks are achieved without centralised leadership and with only rudimentary individual intelligence. We study how groups can compile information to exploit the intelligence of the swarm, and how swarm-based systems may be more robust and flexible than individuals in the execution of group tasks such as decision making and collective movement.

Evolutionary-ecology of Life-history Strategies
Social organisms can exploit a range of life-history strategies unavailable to individual organisms, and this may help explain their success in adapting to different environments. Social insects, for example, have a range of adaptive mechanisms to cope with different environments, including alternative reproductive strategies, shifts in trophic ecology and/or variation in social structure. We explore the evolutionary ecology of these adaptive mechanisms using a combination of field-based ecological and behavioural studies, computer simulations, natural isotopic analysis, and molecular phylogenetic and population genetic analyses.
We welcome students who like to study taxonomy and systematics, animal behaviour, ecology, biogeography, biodiversity informatics, related topics,and interdisciplinary studies combining these themes.

We conduct international research projects in collaboration with foreign institutions, including those of Vietnam, Indonesia, Thailand, Malaysia, Taiwan, Mongolia, Australia and France. So, graduate students may have opportunities to conduct their field work in these countries and areas, or elsewhere.

Through education of Asian students and young researchers, we aimto contribute to the advancement of biodiversity sciences in Asian countries and particularly in biodiversity hotspots.
Recent Publications
  1. Eguchi K, Oguri E, Sasaki T, Matsuo A, Nguyen DD, Jaitrong W, Yahya BE, Chen Z, Satria R, Wang WY, Suyama Y. 2020 (in print). Revisiting museum collections in the genomic era: potential of MIG-seq for retrieving phylogenetic information from aged minute dry specimens of ants (Hymenoptera: Formicidae) and other small organisms. Myrmecological News, 30, xx–xx.
  2. Ito F, Nguyen DA, Eguchi K, Toyota A, Billen J. 2020. Colony composition, queen behavior, specialized predation on millipedes, and exocrine glands in the ponerine ant Myopias conicara Xu, 1998 (Hymenoptera: Formicidae). Entomological Science (online first:
  3. Wang WY, Yamada A, Yamane Sk. 2020. Maritime trap-jaw ants (Hymenoptera: Formicidae: Ponerinae) of the Indo-Australian region– redescription of Odontomachus malignus F. Smith and description of a related new species from Singapore, including first descriptions of males. ZooKeys 915, 137–174.
  4. Yamada A, Nguyen DD, Eguchi K. 2020. Unveiling the morphology of the Oriental rare monotypic ant genus Opamyrma Yamane, Bui & Eguchi, 2008 (Hymenoptera: Formicidae: Leptanillinae) and its evolutionary implications, with first descriptions of the male, larva, tentorium, and sting apparatus. Myrmecological News, 30, 27–52.
  5. Liao HC, Terayama M, Eguchi K. 2019. Revision of Taiwanese and Ryukyuan species of Propristocera (Hymenoptera: Bethylidae), with description of a new species. Zootaxa, 4668, 451-474.
  6. Nguyen DA, Eguchi K, Hwang UW. 2019. Two new pill millipedes (Diplopoda: Glomerida: Glomeridae) from high mountains of Vietnam. Journal of Natural History, 53, 1369–1384.
  7. Syaukani S, Thompson GJ, Yamasaki T, Othman AS, Muarrif S, Sarong MA, Djufri D, Eguchi K. 2019. Taxonomy of the genus Longipeditermes Holmgren (Termitidae, Nasutitermitinae) from the Greater Sundas, Southeast Asia. Zoosyst. Evol., 95, 309-318.
  8. Yamada A, Lin CC, Eguchi K. 2019. Taxonomic notes on the rare ant genus Chrysapace with description of a new species from Brunei (Hymenoptera: Formicidae: Dorylinae). Acta Entomol., 59, 467-480.
  9. Tsukamoto S, Shimano S, Eguchi K. 2019. Additional morphological information on the holotype of Arrup ishiianus Uliana, Bonato & Minelli 2007 (Chilopoda: Geophilomorpha: Mecistocephalidae). Acta Arachonologica, 68, 19–20.
  10. Tsukamoto S, Shimano S, Murakami T, Hiruta SF, Yamasaki T, Eguchi K. 2019. A new species of the genus Arrup from a limestone cave in Akiyoshi-dai, Western Japan (Chilopoda, Geophilomorpha, Mecistocephalidae). Zookeys, 830, 33–51.
  11. Wang WY, Yamada A, Eguchi K. 2019. Discovery of a new ant species of the elusive termitophilous genus Metapone in Singapore (Hymenoptera, Formicidae, Myricinae), with the first detailed description of male genitalia of the genus. ZooKeys, 876, 125-141.
  12. Dang VA, Yamane S, Nuyen DA, Eguchi K. 2018. New Combination and redescription of Brachyponera mesoponeroides Radchenko, 1993 (Hymenoptera: Formicidae: Ponerinae). Revue suisse de zoologie, 125, 221–229.
  13. Leong CM, Lin CC, Shiao SF, Nguyen DD, Eguchi K. 2018. Taxonomic notes on Ponera guangxiensis Zhou, 2001 (Hypmenoptera: Formicidae: Ponerinae), with a new distribution record from Vietnam and the first description of queen, male, and larva. Revue suisse de zoologie, 125, 201–215.
  14. Yamada A, Phung THL, Eguchi K. 2018. Description of a new species of the ant genus Ooceraea Roger, 1862 (Hymenoptera: Formicidae: Dorylinae) from the Vietnamfs Central Highlands. Journal of Insect Biodiversity, 7, 17–23.
  15. Yamada A, Ito F, Hashim R, Eguchi K. 2018. Queen polymorphism in Acanthomyrmex careoscrobis Moffett, 1986 in Peninsular Malaysia (Hymenoptera: Formicidae: Myrmicinae), with descriptions of hitherto unknown female castes and males. Asian Myrmecology, 10, e010009 (Online First).
  16. Wang WY, Yamada A, Eguchi K. 2018. First discovery of the mangrove ant Pheidole sexspinosa Mayr, 1870 (Formicidae: Myrmicinae) from the Oriental region, with redescrptions of the worker, queen and male. Raffles Bulletin of Zoology, 66, 625-663.
  17. Ogura Y, Yamamoto A, Kobayashi H, Cronin AL, Eguchi K. 2017. New discovery of an exotic Ant Technomyrmex brunneus (Formicidae: Dolichoderinae) on Hachijo-jima, Izu islands, an oceanic island of Tokyo prefecture, Japan. ARI — Journal of Myrmecological Society of Japan, 38, 45-52.
  18. Satria R, Bui TV, Eguchi K. 2017. New synonymy and redescription of Anochetus mixtus Radchenko, 1993, and distinction from the other members of the Anochetus rugosus group (Hymenoptera: Formicidae: Ponerinae). Asian Myrmecology, 9, 1-15.
  19. Shoji K, Eguchi K. 2017. Nesting site selection of Temnothorax congruus from Japanese broad-leave forests: a trade-off between nest site quality and distance from sympatric Crematogaster teranishii colonies. Asian Myrmecology 9.
  20. Yamada A, Dang VA. 2017. A New Record of Pheidole hainanensis Chen, Ye, Lu, & Zhou, 2011@(Hymenoptera: Formicidae) from Vietnam. Taiwanese Journal of Entomological Studies 2 (4), 8-12.
  21. Cronin AL, Monnin T, Sillam-Dussès D, Aubrun F, Fédérici P, Doums C. 2016. Qualitative bias in offspring investment in a superorganism is linked to dispersal and nest inheritance. Animal Behaviour, 119, 1–9.
  22. Cronin AL. 2016. Group-size advantages to decision making are environmentally contingent in house-hunting Myrmecina ants. Animal Behaviour, 118, 171–179.
  23. Cronin AL, Loeuille N, Monnin T. 2016. Strategies of offspring investment and dispersal in a spatially structured environment: a theoretical study using ants. BMC Ecology, 16, 4.
  24. Cronin AL, Chifflet-Belle P, Fédérici P, Doums C. 2016. High inter-colonial variation in nestmate relatedness and diverse social structure in a desert ant from Mongolia. Insectes Sociaux, 63, 87–98.
  25. Eguchi K, Mizuno R, Ito F, Satria R, Dang VA, Bui TV, Phung THL. 2016. First Discovery of subdichthadiigyne in Yunodorylus Xu (Formicidae: Dorylinae). Revue suisse de Zoologie, 123, 307-314.
  26. Eguchi K, Bui TV, Oguri E, Yamane Sk. 2016. The first discovery of the gPheidole quadricuspis grouph in the Indo-Chinese Peninsula (Insecta: Hymenoptera: Formicidae: Myrmicinae). Revue suisse de Zoologie, 123, 45–55.
  27. Phung THL, Yamasaki T, Eguchi K. 2016. Conspecificity of Phintella aequipeiformis Zabka, 1985 and P. lucai Zabka, 1985 (Araneae: Salticidae) confirmed by DNA barcoding. Revue suisse de Zoologie, 123, 283-290.
  28. Satria R, Sasaki O, Bui TV, Oguri E, Syoji K, Fisher BL, Yamane Sk, Eguchi K. 2016. Description of the first Oriental species of the ant genus Xymmer (Hymenoptera: Formicidae: Amblyoponinae). Zootaxa, 4168, 141–150.
  29. Yamada A, Eguchi K. 2016. Description of male genitalia of Pristomyrmex punctatus (Smith, 1860) (Hymenoptera,Formicidae ,Myrmicinae). Asian Myrmecology, 8, 1-8.
  30. Cronin AL, Donnerhack O, Seidel F, Yamanaka T. 2015. Fine-scale variation in natural nitrogen isotope ratios of ants (Hymenoptera: Formicidae) Entomologia Experimentalis et Applicata 157, 354–359.
  31. Cronin AL. 2015. Individual and group personalities characterise consensus-decision making in an ant. Ethology, 121, 703–713.
  32. Eguchi K, Bui TV, Yamane Sk, Terayama M. 2015. Redefinition of the genus Bannapone and description of B. cryptica sp. nov. (Hymenoptera: Formicidae: Amblyoponinae). Zootaxa, 4013, 77-86.
  33. Satria R, Kurushima H, Herwina H, Yamane Sk, Eguchi K. 2015. The trap-jaw ant genus Odontomachus Latreille (hymenoptera: formicidae) from Sumatra, with a new species description. Zootaxa, 4048, 1–36.
  34. iM, ]V. 2015. l{\AiAȁFt^tVAȁj̐Î~s. ARI (Journal of the Myrmecological Society of Japan), 37, 39–46.
  35. Cronin AL, Stumpe MC. 2014. Ants work harder during decision making in small groups. Journal of the Royal Society Interface, 11(98), 20140641
  36. Cronin AL. 2014. Ratio-dependent quantity discrimination in quorum sensing ants. Animal Cognition, 17, 1261–1268.
  37. Eguchi K, Bui TV, Yamane Sk. 2014. Generic Synopsis of the Formicidae of Vietnam (Insecta: Hymenoptera),Part II\Cerapachyinae, Aenictinae, Dorylinae, Leptanillinae, Amblyoponinae, Ponerinae, Ectatomminae and Proceratiinae. Zootaxa, 3860, 1-46.
  38. Eguchi K, Bui TV, Oguri E, Maruyama M, Yamane Sk. 2014. A new data of worker polymorphism in the ant genus Dorylus. Journal of Asia-Pacific Entomology 17, 31-36.
  39. Cronin AL. 2013. Synergy between pheromone trails and quorum responses underlies consensus decision making in an ant. Behavioral Ecology and Sociobiology, 67, 1643–1651.
  40. Cronin AL. 2013. Conditional use of social and private information guides house-hunting ants. PLoS ONE, 8(5), e64668.
  41. Cronin AL, Molet M, Doums C, Monnin T, Peeters C. 2013. Recurrent evolution of dependent colony foundation across eusocial insects. Annual Review of Entomology, 58, 37–55.
  42. Doums C, Cronin AL, Ruel C, Fédérici P, Haussy C, Tirard C, Monnin T. 2013. Facultative use of thelytokous parthenogenesis in the polyandrous ant Cataglyphis cursor. Journal of Evolutionary Biology, 26, 1431–1444.
  43. Eguchi K, Widmer M, Oguri E, Fisher BL & Murakami N. 2013. Discovery of cryptic species within Pheidole parva Mayr, 1865 (Insecta: Hymenoptera: Formicidae) widespread in the Indo-West Pacific. ARI (Journal of the Myrmecological Society of Japan), 35, 16-26.
  44. Bui TV, Eguchi K & Yamane Sk. 2013. Revision of the ant genus Myrmoteras of the Indochinese Peninsula (Hymenoptera: Formicidae: Formicinae). Zootaxa, 3666, 544–558.
  45. Cronin AL. 2012. Consensus decision making in the ant Myrmecina nipponica: house-hunters combine pheromone trails with quorum responses. Animal Behaviour, 84, 1243–1251.
  46. Cronin AL, Fédérici P, Doums C, Monnin T. 2012. The influence of intraspecific competition on resource allocation during dependent colony foundation in a social insect. Oecologia, 168, 361–369.
  47. Terayama M, Lin CC, Eguchi K. 2012. Additions to Knowledge of the Ant Fauna of Taiwan (Hymenoptera, Formicidae, Solenopsidini): Genera Anillomyrma and Carebara. Japanese Journal of Systematic Entomology, 18, 1-6.
  48. Chéron B, Cronin AL, Doums C, Fédérici P, Haussy H, Tirard T, Monnin T. 2011. Unequal resource allocation among colonies produced by fission in the ant Cataglyphis cursor. Ecology, 92, 1448–1458.
  49. Cronin AL, Doums CD, Monnin T. 2011. Opportunities for mate choice in the fission-performing ant Cataglyphis cursor. Ecological Entomology, 36, 522–525.
  50. Cronin AL, Bridge C, Field JP. 2011. Climatic correlates of temporal demographic variation in the tropical hover wasp Liostenogaster flavolineata. Insectes Sociaux, 58, 23–29.
  51. Cronin AL, Monnin T. 2010. Self sacrifice in edesperadof contests between relatives. Frontiers in Zoology, 7, 27. doi:10.1186/1742-9994-7-27.
  52. Cronin AL, Monnin T. 2009. Bourgeois queens and high stakes games in the ant Aphenogaster senilis. Frontiers in Zoology, 6, 24. doi:10.1186/1742-9994-6-24.
©2015 Department of Biological Sciences, Tokyo Metropolitan University