taxonID	type	description	language	source
B6598799FF959467FF23FC009A5877C4.taxon	description	(Fig. 1)	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF959467FF23FC009A5877C4.taxon	materials_examined	Type series. Holotype: 1 male, LAO 08 - 13 a / LAOS: Champasak prov., Bolaven plateau, Muang / Paxong, 3 km SW of Ban Hoyayteuy, 6. XII. 07 - 6. V. 08 / leg. S. I. Tarasov, disturbed forest, pitfall traps, h 900 m / ZMUC collection (NHMD). Paratype: 1 female, same data as the holotype (NHMD); 1 male, VIETNAM: / Lam Dong Province, Bao Loc / VI- 2021 / leg. Local collector (NMW).	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF959467FF23FC009A5877C4.taxon	diagnosis	Diagnosis. Head and pronotum black, elytra dark rufous. Pronotum with sharp anterior angles and a pair of yellow oval setal patches. Pronotal hypomeron setose. Yellow rectangular setal patch present in the middle of tergite 3. Basal two-thirds of tergite 7 entirely covered by a yellow setal patch. Male sternite 7 with an arc-shaped cluster of setae in the middle.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF959467FF23FC009A5877C4.taxon	description	Description. FL: 13.44 – 14.28 mm; WL: 24.50 – 28.98 mm. Head and pronotum black, densely covered with black setae. Antennae black, each segment short and stout. Pronotum with sharp anterior angles and a pair of large oval yellow setal patches on disc. Pronotal hypomeron setose. Elytra dark rufous (paratype from Vietnam darker, almost black). Tergites 3 – 7 black. Middle of tergite 3 with a rectangular yellow horizontal setal patch. Tergite 4 with a pair of yellow setal patches on lateral areas extending to paratergites. Basal two-thirds of tergite 7 entirely covered with a yellow setal patch (damaged and mostly missing in holotype, Fig. 1). Tergites 5, 6, and 8 without yellow setae. Sternites 3 – 8 black. Male sternite 7 with an arc-shaped cluster of setae in middle and a deep sub-triangular emargination at midpoint of posterior margin. Male sternite 8 with a moderately deep sub-triangular emargination at midpoint of posterior margin. Femora and tibiae black, tarsomeres 1 – 4 flat and strongly bilobed. Median lobe of aedeagus parallel-sided in parameral view, with a slight expansion near apex and a truncated tip. Paramere flat and strongly reduced with 4 setae apically. Apical lobe of median lobe distinctly bent toward paramere in lateral view. Comparison. This species can be distinguished from all other Naddia besides N. tangi sp. nov. by the sharp anterior angles of the pronotum. It can be distinguished from N. tangi sp. nov. by: head with black setae, disc of pronotum with oval yellow setal patches, and a broader median lobe of the aedeagus.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF959467FF23FC009A5877C4.taxon	distribution	Distribution. Naddia alexeyi sp. nov. is known from the Bolaven Plateau in southern Laos and Bao Loc in southern Vietnam. As a winged species, it likely has a wider distribution.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF959467FF23FC009A5877C4.taxon	etymology	Etymology. This species is named after Alexey Solodovnikov, who has made great contributions to the systematics and taxonomy of rove beetles.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	description	(Fig. 2)	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	materials_examined	Type series. Holotype: 1 male, Coll. R. I. Sc. N. B. / South India / S. Coorg. Ammattl / 3100 ft. V- 1951 / P. S. Nathan (RBINS).	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	diagnosis	Diagnosis. Head and pronotum entirely covered with golden setae. Pronotum with sharp anterior angles. Pronotal hypomeron setose. Elytra red-orange. Tergites 3, 7 and 8 entirely covered with golden setae. Male sternite 7 with an arc-shaped cluster of setae in the middle.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	description	Description. FL: 12.32 mm; WL: 24.22 mm. Head and pronotum black, densely covered with golden setae. Antennae dark brown, short and stout. Pronotum with sharp anterior angles. Pronotal hypomeron setose. Elytra red-orange. Tergites primarily dark brown. Tergite 3 entirely covered with golden setae, extending to paratergites. Tergites 4 – 6 each with a pair of lateral golden setal patches. Tergites 7 – 8 entirely covered with golden setae. Sternites 3 - 8 dark brown. Male sternite 7 with arc-shaped cluster of setae in middle and a shallow sub-triangular emargination at midpoint of posterior margin. Male sternite 8 with a moderately deep sub-triangular emargination at midpoint of posterior margin. Femora and tibiae dark brown. Tarsomeres 1 – 4 flat and strongly bilobed. Aedeagus slender. Median lobe of aedeagus parallel-sided in parameral view with a slight expansion near rounded apex. Paramere flat and strongly reduced, with six very short setae in central basal area. Apical lobe of median lobe straight in lateral view. Comparison. This species can be distinguished from all other Naddia besides N. alexeyi sp. nov. by the sharp anterior angles of the pronotum. It can be distinguished from N. alexeyi sp. nov. by: head with golden setae, disc of pronotum without yellow oval setal patches, and a narrower median lobe of the aedeagus. The dorsal habitus of N. tangi sp. nov. resembles N. wielebnowskiae Schillhammer, 1996, but differs from it by: pronotum with sharp anterior angles, pronotal hypomeron setose, golden setal patches present on tergites 3 and 7.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	distribution	Distribution. Naddia tangi sp. nov. is known only from its type locality in southwestern India. As a winged species, it likely has a wider distribution.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
B6598799FF909462FF23FF4599CE7440.taxon	etymology	Etymology. The species is named after Liang Tang, who shows passion for and makes great contributions to the taxonomy of rove beetles.	en	Zhao, Qing-Hao, Hu, Fang-Shuo (2025): Two new species of Naddia Fauvel (Coleoptera: Staphylinidae: Staphylininae) and creation of the N. alexeyi species group. Zootaxa 5575 (2): 333-338, DOI: 10.11646/zootaxa.5575.2.9, URL: https://doi.org/10.11646/zootaxa.5575.2.9
