taxonID	type	description	language	source
03C687E5FFAFDC7CFF201038FA3F57EE.taxon	type_taxon	Type species. Andixius nupta Emeljanov & Hayashi, 2007, original designation.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAFDC7CFF201038FA3F57EE.taxon	diagnosis	Diagnosis. See Zhi et al. (2018) and Wang et al. (2023 a).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAFDC7CFF201038FA3F57EE.taxon	distribution	Distribution. China, Japan.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	description	(Fig. 1)	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	diagnosis	Diagnosis. The salient features of the new species include: forewings (Fig. 1 E) with 14 apical cells; hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 7; pygofer with medioventral process (Fig. 1 G) oval-shaped in ventral view, truncate at apex; anal segment (Fig. 1 F, H) asymmetrical; aedeagus (Fig. 1 J – M) with six spinose processes, periandrium with lamellar process bifurcated into two spinous processes at apex, endosoma without process.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	description	Description. Measurements. Total length: male 5.77 mm (N = 1). Coloration. General color (Fig. 1 A, B) yellowish brown. Vertex brown to dark brown, lateral carinae dark. Eyes red-brown. Ocelli greyish white with reddish. Frons deep yellowish-brown, with two red markings medially, lateral carinae bronze-yellow, carinae line dark, behind eyes with two brown spots. Clypeus yellowish brown. Antennae greyish brown. Pronotum and mesonotum brown to dark brown. Forewings semi-translucent, basal and middle parts with oblique yellowish-brown stripe, rest with many variform brown to dark brown markings, stigma, veins and tubercles brown (Fig. 1 E). Head and thorax. Vertex (Fig. 1 A, C) 1.07 times as long as wide, anterior margin nearly concave, posterior margin V-shaped recessed, lateral carina distinctly developed, median carina absent. Frons (Fig. 1 D) claviform, longer in middle line than wide at widest portion (about 2.75: 1), widest at nearly apex, lateral carina developed, apex of median carina raised. Clypeus (Fig. 1 D) with distinct median carina. Pronotum (Fig. 1 A, C) shorter than vertex in midline (1: 2.88), posterior margin recessed. Mesonotum (Fig. 1 A, C) 2.06 times longer than pronotum and vertex combined, lateral carinae curved outwards. Forewings (Fig. 1 E) 2.61 times as long as wide, with 14 apical cells and 7 subapical cells, RP with 5 branches, MP with 6 terminals: MP 111, MP 112, MP 12, MP 2, MP 3, and MP 4, fork MP 1 + MP 2 basad of fork MP 3 + MP 4. Hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 7. Male genitalia. Pygofer (Fig. 1 F, G) symmetrical, ventral margin distinctly longer than dorsal margin in lateral view, posterior margin convex; in ventral view posterior margin with a small rounded process at basal 1 / 4, medioventral process oval-shaped, truncate at apex. Anal segment (Fig. 1 F, H) asymmetrical, in lateral view dorsal margin nearly straight, ventral margin arc-shaped, left lobe distinctly larger than right lobe; in dorsal view, 2.30 times as long as wide; anal style not extending beyond anal segment. Gonostyli (Fig. 1 G, I) slender, in lateral view nearly clavate, dorsal margin concave medially, ventral margin convex at middle, with a round process; in ventral view symmetrical, base narrow, middle part enlarged, end relatively narrow and slightly concave, inner margins near the base with a small spine-like protrusion, a triangular process in the middle. Aedeagus (Fig. 1 J – M) with six spinose processes. Periandrium in ventral view with a large lamellar process at apical part, with a slender and a sharp triangular process at apex; ventral margin with four spinous processes, apical 2 / 3 with a curved process, bent into a hook-shaped at apex, apical 1 / 3 with three processes, one short and triangular, one curved and directed ventrad, rest one directed ventrocephalad. Endosoma slightly sclerotized, without process.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	materials_examined	Type material. Holotype: ♂, CHINA: Dexing Town, Medog County, Xizang Province, 16 August 2020, Yong-Jin Sui.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	distribution	Distribution. China (Xizang).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	etymology	Etymology. The species name is derived from the Latin word “ biprocessus ”, referring to lamellar process of periandrium bifurcated into two spinous processes at apex.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFACDC7AFF2011DFFB0656E5.taxon	discussion	Remarks. This species is similar to A. productus Wang & Chen, 2023, but differs from the latter in: (1) forewings with 14 apical cells (forewings with 13 apical cells in A. productus); (2) aedeagus with six processes (aedeagus with seven processes in A. productus); and (3) ventral margin of periandrium with a hook-shaped process at apical 2 / 3 (ventral margin of periandrium without a hook-shaped process at apical 2 / 3 in A. productus).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	description	(Fig. 2)	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	diagnosis	Diagnosis. The salient features of the new species include: forewings (Fig. 2 E) grayish white, basal part with an oblique yellowish-brown stripe; hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 8; pygofer with medioventral process (Fig. 2 G) equilateral triangular in ventral view; anal segment (Fig. 2 F, H) asymmetrical; aedeagus (Fig. 2 J – M) with four spinose processes, periandrium with a very slender spinous process at apical part, lamellar process with three spinous processes at ventral side.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	description	Description. Measurements. Total length: male 5.43 mm (N = 1). Coloration. General color (Fig. 2 A, B) light yellowish-brown. Vertex yellowish brown to dark, base of lateral carinae black. Eyes dark brown. Ocelli greyish white with red suffusion. Frons black, apical part brown, lateral carinae yellowish brown, behind eyes with two brown spots. Clypeus tawny, carinae of postclypeus brown, median carina of anteclypeus black. Antennae light grayish-brown. Pronotum with median part dark brown, lateral sides light grayish-brown. Mesonotum dark brown medially, yellowish brown laterally. Forewings semi-translucent, grayish white, basal part with an oblique yellowish-brown stripe, rest with many variform dark brown markings, stigma yellowish brown, veins and tubercles light grayish-brown to yellowish brown (Fig. 2 E). Head and thorax. Vertex (Fig. 2 A, C) 1.27 times as long as wide, anterior margin nearly straight, posterior margin V-shaped recessed, lateral carina distinctly developed, median carina absent. Frons (Fig. 2 D) claviform, longer in middle line than wide at widest portion (about 3.67: 1), widest at nearly apex, lateral carina developed, apex of median carina raised. Clypeus (Fig. 2 D) with distinct median carina. Pronotum (Fig. 2 A, C) shorter than vertex in midline (1: 1.98), posterior margin recessed. Mesonotum (Fig. 2 A, C) 2.08 times longer than pronotum and vertex combined, lateral carinae curved outwards. Forewings (Fig. 2 E) 2.53 times as long as wide, with 12 apical cells and 7 subapical cells, RP with 3 branches, MP with 5 terminals: MP 11, MP 12, MP 2, MP 3, and MP 4, fork MP 1 + MP 2 basad of fork MP 3 + MP 4. Hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 8. Male genitalia. Pygofer (Fig. 2 F, G) symmetrical, ventral margin distinctly longer than dorsal margin in lateral view, posterior margin convex; in ventral view posterior margin with a small sharp-angled process at basal 1 / 3, medioventral process equilateral triangular. Anal segment (Fig. 2 F, H) asymmetrical, in lateral view dorsal margin straight, ventral margin arc-shaped slightly, left lobe distinctly larger than right lobe; in dorsal view, 2.01 times as long as wide; anal style not extending beyond anal segment. Gonostyli (Fig. 2 G, I) slender, in lateral view nearly Sshaped, ventral margin with a smooth at proximal part; in ventral view curved outward at middle part, apex curved caudally, lateral margins curved, base of inner margin concave. Aedeagus (Fig. 2 J – M) with four spinose processes. Periandrium with a very slender spinous process at apical part, folded downward at basal 1 / 3, then strong bending, directed caudad; in ventral view with a large lamellar process at apical part, with three spinous processes at apex, directed cephalad, dorsal one bifurcated, ventral one shorter. Endosoma slightly sclerotized, without process.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	materials_examined	Type materials. Holotype: ♂, CHINA: Beibeng Town, Medog County, Xizang Province, 14 August 2020, Yong-Jin Sui.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	distribution	Distribution. China (Xizang).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	etymology	Etymology. The species name is derived from the Latin word “ crispiprocessus ”, referring to periandrium with a slender process, recurved at basal 1 / 3.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFAADC78FF2010D0FD60518C.taxon	discussion	Remarks. This species is similar to A. longispinus Zhi & Chen, 2018, but differs from the latter in: (1) periandrium with a recurved slender spinous process at apical part (periandrium without a recurved slender spinous process at apical part in A. longispinus); (2) lamellar process of periandrium with three spinous processes at ventral side (periandrium without a lamellar process at ventral side in A. longispinus); and (3) endosoma without process (endosoma with two processes in A. longispinus).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	description	(Fig. 3)	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	diagnosis	Diagnosis. The salient features of the new species include: vertex (Fig. 3 A, C) with three brown markings; forewings (Fig. 3 E) with 13 apical cells; hind tibia with six lateral spines, chaetotaxy of hind tarsi 6 / 6; pygofer with medioventral process (Fig. 3 G) nearly semi-circular; anal segment (Fig. 2 F, H) symmetrical; aedeagus (Fig. 3 J – M) with five spinose processes, in left side, periandrium with lamellar process trifurcated apically, ventral margin with a long spinous process, dorsal part with a needle-like spinous process, endosoma without process.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	description	Description. Measurements. Total length: male 6.6 – 7.0 mm (N = 2). Coloration. General color (Fig. 3 A, B) yellowish brown. Vertex greyish-yellow, with three brown markings. Eyes brown. Ocelli light grayish yellow. Frons yellowish brown, with two red markings medially, behind eyes with two brown spots. Clypeus yellowish brown. Antennae yellowish brown. Pronotum brown to dark brown. Mesonotum butternut-colored, middle part light. Forewings semi-translucent, basal and middle parts with oblique yellowish-brown stripe, costal area with three dark brown spots, rest with many variform brown to dark brown markings, veins deep yellow, stigma and tubercles brown (Fig. 3 E). Head and thorax. Vertex (Fig. 3 A, C) 0.98 times as long as wide, anterior margin nearly truncate, posterior margin V-shaped recessed, lateral carina distinctly developed, median carina absent. Frons (Fig. 3 D) claviform, longer in middle line than wide at widest portion (about 2.81: 1), widest at nearly apical 1 / 3, lateral carina developed, apex of median carina raised. Clypeus (Fig. 3 D) with distinct median carina. Pronotum (Fig. 3 A, C) shorter than vertex in midline (1: 2.32), posterior margin recessed. Mesonotum (Fig. 3 A, C) nearly 1.90 times longer than pronotum and vertex combined, lateral carinae slightly curved outwards. Forewings (Fig. 3 E) 2.53 times as long as wide, with 13 apical cells and 7 subapical cells, RP with 3 branches, MP with 5 terminals: MP 11, MP 12, MP 2, MP 3, and MP 4, CuA 1 bifurcated, fork MP 1 + MP 2 basad of fork MP 3 + MP 4. Hind tibia with six lateral spines, chaetotaxy of hind tarsi 6 / 6. Male genitalia. Pygofer (Fig. 3 F, G) symmetrical, in lateral view nearly trapezoidal, ventral margin distinctly longer than dorsal margin, posterior margin curved and convex, apical part with a rounded process; in ventral view U-shaped, medioventral process nearly semi-circular. Anal segment (Fig. 3 F, H) symmetrical, in lateral view dorsal margin nearly straight, ventral margin arc-shaped, apical part triangular downward; in dorsal view, 1.94 times as long as wide; anal style not extending beyond anal segment. Gonostyli (Fig. 3 G, I) slender, in lateral view nearly clavate, gradually expanding towards the end, dorsal margin concave at apical 1 / 3; in ventral view symmetrical, lateral margins curved, enlarged at apex. Aedeagus (Fig. 3 J – M) with five spinose processes. Periandrium in left side with a large lamellar process at apical part, with three processes at apex, dorsal one short, directed dorsocephalad, middle one long and curved, directed cephalad, ventral one shortest, thorn-like, directed ventrocephalad; ventral margin with a long spinous process, directed cephalad, parallel to periandrium; dorsal part with a needle-like spinous process, tapering to apex. Endosoma slightly sclerotized, without process.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	materials_examined	Type material. Holotype: ♂, CHINA: Gaoligongshan National Nature Reserve, Yunnan Province, 1 August 2013, Hai-Yan Sun. Paratypes: 1 ♂, Gaoligongshan National Nature Reserve, Yunnan Province, 1 August 2013, Ying-Jian Wang.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	distribution	Distribution. China (Yunnan).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	etymology	Etymology. The species name “ lii ” is named in honor of Professor Zi-Zhong Li at Guizhou University, a Chinese entomologist who specializes in Hemiptera.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA8DC76FF201038FBB7517C.taxon	discussion	Remarks. This species is similar to A. trifurcus Zhi & Chen, 2018, but differs from the latter in: (1) forewings with 13 apical cells (forewings with 12 apical cells in A. trifurcus); (2) periandrium with an expanded lamellar process at left side (periandrium with an expanded semi-enclosed lamellar process around left side and ventral margin of periandrium in A. trifurcus); and (3) periandrium with lamellar process trifurcated at apical margin (periandrium with lamellar process trifurcated at ventral margin in A. trifurcus).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	description	(Figs 4, 5)	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	diagnosis	Diagnosis. The salient features of the new species include: vertex (Fig. 4 A, C) 0.78 times as long as wide; forewings (Fig. 4 E) with 13 apical cells; hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 8; anal segment (Fig. 4 F, H) symmetrical; aedeagus (Fig. 4 J – M) with three spinose processes, periandrium in left side with a long spinous process at apical part, ventral margin with a lamellar process, forming a hook-shaped process at apex, endosoma with a long spinous process at base.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	description	Description. Measurements. Total length: male 6.0 mm (N = 1), female 6.5 mm (N = 1). Coloration. General color (Fig. 4 A, B) light brownish-yellow. Vertex greyish-yellow. Eyes brown. Ocelli light grayish yellow. Frons yellowish brown, with two red markings, middle part brown, behind eyes with two brown spots. Anteclypeus greyish-yellow. Antennae greyish-yellow. Pronotum yellowish brown to brown, yellowish-white medially. Mesonotum yellowish brown medially, lateral parts brown. Forewings semi-translucent, basal and middle parts with oblique yellowish-brown stripe, rest with many variform brown to dark brown markings, veins and stigma deep yellow, tubercles brown (Fig. 4 E). Head and thorax. Vertex (Fig. 4 A, C) 0.78 times as long as wide, anterior margin nearly truncate, posterior margin V-shaped recessed, lateral carina distinctly developed, median carina absent. Frons (Fig. 4 D) claviform, longer in middle line than wide at widest portion (about 2.22: 1), widest at nearly apical 1 / 3, lateral carina developed, apex of median carina raised. Clypeus (Fig. 4 D) with distinct median carina. Pronotum (Fig. 4 A, C) shorter than vertex in midline (1: 1.61), posterior margin recessed. Mesonotum (Fig. 4 A, C) nearly 2.28 times longer than pronotum and vertex combined, lateral carinae slightly curved outwards. Forewings (Fig. 4 E) 2.33 times as long as wide, with 13 apical cells and 7 subapical cells, RP with 3 branches, MP with 5 terminals: MP 11, MP 12, MP 2, MP 3, and MP 4, fork MP 1 + MP 2 basad of fork MP 3 + MP 4. Hind tibia with five lateral spines, chaetotaxy of hind tarsi 8 / 8. Male genitalia. Pygofer (Fig. 4 F, G) symmetrical, in lateral view nearly trapezoidal, ventral margin distinctly longer than dorsal margin, posterior margin convex; in ventral view U-shaped, medioventral process rounded. Anal segment (Fig. 4 F, H) symmetrical, flat and tubular-shaped, in lateral view dorsal margin nearly straight, ventral margin arc-shaped, apical part triangular downward; in dorsal view, 1.48 times as long as wide; anal style not extending beyond anal segment. Gonostyli (Fig. 4 G, I) slender, in lateral view nearly clavate, middle part thin; in ventral view symmetrical, lateral margins curved, enlarged at apex. Aedeagus (Fig. 4 J – M) with three spinose processes. Periandrium in left side with a long spinous process at apical part, directed ventrocephalad; ventral margin with a lamellar process, forming a hook-shaped process at apex, directed dorsocephalad. Endosoma with a long spinous process at base, tapering to apex, basal part bent one time. Female genitalia. Tergite IX (Fig. 5 A, B, D) moderately sclerotized, with a nearly elliptical wax plate. Anal segment (Fig. 5 C) rectangular, 1.32 times longer than wide in dorsal view, anal style linguiform. Gonapophysis VIII (Fig. 5 E) elongate, curved upwards. Gonapophysis IX (Fig. 5 F) with one middle teeth, distance ratio between middle tooth to apex and length of denticulate portion is 2.45. Gonoplac (Fig. 5 G) rod-like, 4.27 times as long as wide in lateral view. Posterior vagina pattern as shown in Figure 5 H, I.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	materials_examined	Type material. Holotype: ♂, CHINA, Wuyishan National Nature Reserve, Fujian Province, 27 June 2013, Bin Li. Paratype: 1 ♀, Wuyishan National Nature Reserve, Fujian Province, 27 June 2013, Bin Li.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	distribution	Distribution. China (Fujian).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	etymology	Etymology. The species name is derived from the Latin word “ uncinulatus ”, referring to lamellar process of periandrium forming a hook-shaped process at apex.	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
03C687E5FFA6DC74FF2017A4FC2955BE.taxon	discussion	Remarks. This species is similar to A. cultratus Wang, Zhi & Chen, 2020, but differs from the latter in: (1) forewings with 13 apical cells (forewings with 12 apical cells in A. cultratus); (2) ventral margin of periandrium with a hooked-shaped spinose process at basal 1 / 3 (ventral margin of periandrium with a blade-shaped spinose process at basal 1 / 3 in A. cultratus); and (3) endosoma with one process, margins without small teeth (endosoma with two processes, margins with many small teeth in A. cultratus).	en	Lv, Shasha, Zhi, Yan, Wang, Xiaoya, Zhang, Yubo, Chen, Xiangsheng, Yang, Lin (2026): Four new species of the planthopper genus Andixius (Hemiptera, Fulgoroidea, Cixiidae) from China, with an updated checklist and key to species. Zootaxa 5856 (1): 181-193, DOI: 10.11646/zootaxa.5856.1.25, URL: https://doi.org/10.11646/zootaxa.5856.1.25
