This dataset includes the virtual cybertype datasets for three new Strumigenys Smith, 1860 species described in Hamer et al. "A review of the rare Strumigenys mnemosyne (Formicidae; Myrmicinae) group using micro-CT scanning, with the description of three new species, and the virtual repair of a broken paratype." Also contained within the datasets are cybermaterial for Strumigenys mazu workers and gynes. New species datasets Strumigenys liui sp. nov. – Hamer, Tang & Guénard 2025 urn:lsid:zoobank.org:act:93EF59CF-F5B6-49E0-9211-7CC64D725EF9 Holotype (MCZ-ENT00759758) dataset consists of surface volume rendering image stacks of PNG files comprising full face views stills of the head, whole body in lateral and dorsal view, as well as dorsal view of postpetiole and first gastral tergites. Further, raw volumetric data (nii format), and a full 3D surface model (STL format) are made available. Digital stacked colour images (tif format) of the head in full face view, and the whole body in dorsal and lateral view are also provided. A 3D surface model is also made available on Sketchfab (to be provided upon acceptance). Strumigenys marmorata sp. nov. – Hamer, Tang & Guénard 2025 urn:lsid:zoobank.org:act:01240912-0FCD-42C9-8FC2-70FC6FB4F06E The paratype (CASENT0764984) dataset consists of surface volume rendering image stacks of PNG files comprising isolated stills of the head in lateral view, the mandibles in anteroventral view, the metasoma and petiole in lateral view, and finally the postpetiole and gaster in lateral view. Additional surface volume renders include the whole reconstructed body in lateral and dorsal view. Further, raw volumetric data (nii format), and a full 3D surface model (STL format) are made available. Digital stacked colour images of the head in full face view, and whole body in dorsal and lateral view are also made available of the holotype specimen (ANTWEB1010070) (TIF format), as well as the paratype specimen (CASENT0764984) (PNG format), with images of the later acquired prior to breakage. A fully reconstructed paratype (CASENT0764984) 3D surface model of the whole body is also made available on Sketchfab (to be made available upon acceptance). Strumigenys rimdahli sp. nov. – Hamer, Tang & Guénard 2025 urn:lsid:zoobank.org:act:619FD6BE-56A9-48C7-8622-DF68FA7D6D72 Holotype (ANTWEB1010648) dataset consists of surface volume rendering image stacks of PNG files comprising full face views stills of the head, whole body in lateral and dorsal view, as well as mandibles in anterior view. Further, raw volumetric data (nii format), and a full 3D surface model (STL format) are made available. Digital stacked colour images of the whole body in lateral and dorsal view, as well as the head in full face view are also provided (TIFF format). All data is deposited on Zenodo (link to be made available upon acceptance). A 3D surface model is also made available on Sketchfab (link to be made available upon acceptance). Virtual dataset for Strumigenys mazu (Terayama, Lin & Wu 1996) Worker Worker based cyber-material contains surface volume rendering image stacks of PNG files for CASENT0745759, comprising stills of the head in full face view, the mandibles in anteroventral view, the whole body in lateral and dorsal view, as well as individual images of both petiolar segments, and gaster both in dorsal view. Further, raw volumetric data (nii format), and a full 3D surface model (STL format) are made available for CASENT0745759, as well as CASENT0764985. 3D surface models of the whole body of CASENT0745759, and CASENT0764985 are also made available on Sketchfab (CASENT0745759; link to be made available upon acceptance & CASENT0764985; link to be made available upon acceptance). Gyne Strumigenys mazu gyne (CASENT0745761) cyber-material datasets consist of surface volume rendering image stacks of PNG files, comprising full face views stills of the head in full face view, as well as whole body in lateral and dorsal view. Further, raw volumetric data (nii format), and a full 3D surface model (STL format) are made available. A 3D surface model of CASENT0745761 is also made available on Sketchfab (link to be made available upon acceptance). CT-scan meta data is also supplied is a .xlsx format. Funding Funding; Environment and Conservation Fund from the Government of the Hong Kong Special Administrative Region, under the ‘Environmental Research, Technology Demonstration and Conference Projects’ funding scheme, Project number ECF 137/2020. Research Grant Council from the Government of the Hong Kong Special Administrative Region, GRF17103223. Acknowledgements The first author would like to thank Kenneth Rimdahl and colleagues at Monsoon Tea for facilitating fieldwork in Thailand, as well as Kelsey Davies and Marco Chan for their invaluable assistance in the field. The authors are also thankful to Professor John T. Longino for specimen images of Strumigenys runa. We also thankful to Crystal Maier from the Museum of Comparative Zoology, Harvard University for sending us specimens of S. liui. The first author is also grateful to Suzanne Ryder for allowing access and facilitating the examination of the Strumigenys NHMUK collection. All authors would like to thank all those who collected specimens throughout Southeast Asia used within this study. Furthermore, we thank the Imaging Section of the Okinawa Institute of Science and Technology Graduate University (OIST) for providing access to the Zeiss Xradia micro-CT scanner used for this study, and in particular Shinya Komoto for general support.