Syscia chaladthanyakiji Jaitrong, Wiwatwitaya & Yamane, 2020

Du, Congcong, Xu, Zhenghui & Chen, Zhilin, 2024, Taxonomic account of the ant genus Syscia Roger, 1816 (Hymenoptera, Formicidae) from Asia, with descriptions of two new species from China, European Journal of Taxonomy 930, pp. 157-181 : 165

Syscia chaladthanyakiji Jaitrong, Wiwatwitaya & Yamane, 2020

Fig. 3

Syscia chaladthanyakiji Jaitrong et al., 2020: 3 , figs 1–6, 11 (w.q.) Thailand.

Diagnosis

Workers have 11-segmented antennae. Head in full-face view rectangular, longer than broad, with posterior margin straight. Mesosoma in dorsal view subrectangular with almost parallel lateral sides; in lateral view, dorsal outline is almost straight. Petiole in dorsal view rectangular, broader than long; in lateral view (excluding sternite) rectangular with convex dorsal outline, bilateral edge vertical; subpetiolar process in lateral view subtriangular with large acute tooth on anteroventral margin, with posterior outline strongly concave. Postpetiole in lateral view slightly higher than long, sternite anteroventrally produced as blunt angle directed downward and forward.

Material examined

Unexamined. But the holotype of S. chaladthanyakiji was examined from images available from AntWeb (https://www.antweb.org; THNHM-I-05483 , imaged by Yudthana Samsung).

Figures

Fig. 3. Syscia chaladthanyakiji Jaitrong, Wiwatwitaya & Yamane, 2020, holotype, worker (THNHM-I-05483). A. Head in full-face view. B. Label. C. Body in dorsal view. D. Body in lateral view (images cited from https://www.antweb.org; imaged by Yudthana Samung).