Eburopone easoana Yamada & Nguyen & Eguchi 2023, sp. nov.

• Main Authors: Yamada, Aiki, Nguyen, Dai Dac, Eguchi, Katsuyuki
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Hymenoptera; Formicidae; Eburopone; Eburopone easoana; DML
• Online Access: https://doi.org/10.5281/zenodo.10170542

Eburopone easoana sp. nov. Figs 2, 3, 4, 5, 6, 7 Type material. Holotype . Vietnam • worker; Vietnam, Dak Lak Province, Ea Kar District, Ea So Nature Reserve; 12.9676°N, 108.5230°E, 478 m alt.; 17 Sept. 2019; K. Eguchi leg.; colony code Eg17ix19-297; IEBR. Paratypes . 6 workers and 2 dealate queens from the same colony as the holotype; IEBR, MCZC, MHNG, MNHAH. Non-type material examined. Two workers from the same colony as the type series, used for SEM and dissecting observations (one of these was used also for DNA barcoding). DNA barcode. A partial mitochondrial COI sequence of 658 bp length determined from a non-type worker (the same colony as the type series) is deposited at GenBank: accession number, LC776907. Worker diagnosis. Body rather bicolored: abdominal segments III-VII distinctively paler-colored than most surfaces of cranium and mesosoma. Frontal line distinct, extending a little beyond mid-length of cranium. Occipital corner in lateral view strongly produced posteriad to form conspicuous angle. Anterior (frontoclypeal) margins of torulo-posttorular complex not forming conspicuous lobes protruding over anterior clypeal margin in full-face view. Mandibles when closed in full-face view forming only a little space between anterior clypeal margin and mandibles. Promesonotal suture faint and inconspicuous. Petiole in dorsal view almost as long as or slightly longer than wide, with weakly convex lateral margins. Subpetiolar process in lateral view rounded lobate, with anterobasal margin weakly emarginate; posteroventral slope gentle, weakly concave. Abdominal segment III in dorsal view subtrapezoidal, strongly wider posteriorly, distinctly wider than long. Worker measurements (in mm) and indices. Holotype : HL 0.63, HW 0.55, SL 0.31, WL 0.86, DML 0.73, PH 0.31, PW 0.37, MFL 0.43, PTH 0.26, PTL 0.29, PTW 0.28, A3L 0.35, A3W 0.46, A4L 0.58, A4W 0.62, CI 87, SI 50, DMI 43, DMI2 85, LMI 36, MFI 79, LPI 111, DPI 97, DA3I 131, DA4I 107. Paratypes ( N = 6): HL 0.63-0.65, HW 0.55-0.57, SL 0.31-0.33, WL 0.89-0.92, ...