Aalatettix Zheng & Mao, 2002

Cao, Cheng-Quan, Shi, Jian-Ping & Yin, Zhan, 2016, Discovery of a new species and key to all known species of the genus Aalatettix Zheng & Mao (Orthoptera, Tetrigoidea, Tetrigidae) from China, Zootaxa 4097 (1), pp. 143-146 : 145-146

Key to all known species of the genus Aalatettix Zheng & Mao, 2002

1 Apex of hind process of pronotum with a triangular concave .......................................................................................................... 2

- Apex of hind process of pronotum narrow rounded.......................................................................................................................... 6

2 Width of vertex 2.8 times of an eye; upper margin of pronotum arced before shoulders but undulated behind that; hind process of pronotum reaching apex of hind femur ............................................................................................................... A. lativertex Zheng Zheng, 2014 J. Shaanxi Normal University Nat. Sci. Ed., 42(6): 55, 58.

Type locality: China, Hunan, Shimen (Hupingshan).

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

- Width of vertex 1.5 – 2.0 times of an eye; upper margin of pronotum extremely arc-shaped protuberant or waved; hind process of pronotum reaching 2/3 or 3/4 of hind femur...................................................................................................................................... 3

3 Vertex and frontal ridge forming a right angle in profile; upper margin of pronotum almost straight; lateral keels of prozona parallel; with a pair of short longitudinal keels between shoulders..................................................... A. longipulvillus Zheng & Mao Zheng & Mao, 2002 J. Shaanxi Normal University Nat. Sci. Ed., 30(1): 91, 93.

Type locality: China, Yunnan, Jinghong

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

- Vertex and frontal ridge forming blunt circle in profile; upper margin of pronotum extremely arc-shaped protuberant or waved; lateral keels of prozona contracted backward; without a pair of short longitudinal keels between shoulders..................................4

4 Upper margin of pronotum extremely arc-shaped protuberant; width of frontal ridge wider than width of basal joint of antennae; hind tibiae black, base pale.............................................................................................................. A. gibbosa Zheng, Cao & Chen Zheng, Cao & Chen, 2011 Acta Zootaxonomica Sin. , 36(4): 943.

Type locality: China, Sichuan, Mianning

Location of type specimen: holotype, female, Shaanxi Normal University, Xi’an, China.

- Upper margin of pronotum waved; width of frontal ridge narrower than width of basal joint of antennae; hind tibiae dark brown, base not pale ...................................................................................................................................................................................... 5

5 Length of pronotum longer, reaching epiproct, width of vertex 2.0 times diameter of eye, lateral carinae of pronotum contracted backward slightly, posterior apex of lower margin rounded on lateral lobe of pronotum, lower margin of median femur straight, antennae placed between lower margin of eyes ...................................................................................... A. yangi Zheng, Shi & Yin Zheng, Shi & Yin, 2015 Zootaxa , 4021(3), 486–490.

Type locality: China, Taiwan, Nantou, Chunyang (N 24°02′, E 121°08′, 1600m).

Location of type specimen: holotype male, paratype female, National Museum of Natural Science, Taichung, Taiwan, China.

- Length of pronotum shorter, not reaching epiproct, width of vertex 1.5 times diameter of eye, lateral carinae of pronotum contracted backward distinctly, posterior apex of lower margin anglar on lateral lobe of pronotum, lower margin of median femur waved, antennae placed under lower margin of eyes ................................................................................ A. xiai Zheng, Shi & Yin Zheng, Shi & Yin, 2015 Zootaxa , 4021(3), 486–490.

Type locality: China, Taiwan, Nantou, Lienhuachih (N 23°55′, E 120°52′, 750m).

Location of type specimen: holotype male, paratype female, National Museum of Natural Science, Taichung, Taiwan, China.

6 Upper margin of pronotum extremely arc-shaped protuberant or arced before shoulders in profile, disc of pronotum with a pair of zonal black stripes ............................................................................................................................................................................. 7

- Upper margin of pronotum almost straight, disc of pronotum without a pair of zonal black stripes................................................ 9

7 Vertex and frontal ridge forming a right angle in profile; upper margin of pronotum arced before shoulders but straight behind that in profile; hind process of pronotum reaching 2/3 of hind femur ..................................... A. leshanensis Zheng, Cao & Chen Zheng, Cao & Chen, 2011 Acta Zootaxonomica Sin. , 36(4): 944.

Type locality: China Sichuan, Leshan.

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

- Vertex and frontal ridge forming rounded arc in profile; upper margin of pronotum extremely arc-shaped protuberant, hind process of pronotum reaching almost apex or 4/5 of hind femur ........................................................................................................... 8

8 Anterior margin of vertex arc-shaped; frontal ridge slightly concave before lateral ocelli; antennae located between lower margin of eyes, 14 segmented, length of a segment in the middle 4 times as its width; hind process of pronotum reaching 4/5 of hind femur; three pulvilli of the first segment of hind tarsi gradually larger in turn; hind tibia black brown............................................. ........................................................................................................................................... A. cangshanensis Zheng, Lin & Zhang Zheng, Lin & Zhang, 2013 Acta Zootaxonomica Sin. , 36(4): 943.

Type locality: China, Yunnan, Cangshan.

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

- Anterior margin of vertex straight; frontal ridge distinctly concave before lateral ocelli; antennae located below lower margin of eyes, 16 segmented, length of a segment in the middle 2.5 times as its width; hind process of pronotum reaching almost apex of hind femur; 3rd pulvilli of the first segment of hind tarsi extremely large, 1st pulvilli smaller, 2nd pulvilli extremely small; hind tibia black, with two light rings in the middle ............................................................................................ A. nyalamensis Zheng & Lin. Zheng & Lin, 2015 Zootaxa , 3986(4): 488 – 492.

Type locality: China, Xizang, Nyalam.

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

9 Longitudinal furrow of frontal ridge wider than the first segment of antennae; width of vertex 1.5 times width of eye, anterior margin of pronotum not reaching posterior margin of eye, pronotum hind process of pronotum reaching 4/5 of hind femur, lateral carinae of prozona parallel, lower margin of median femur almost straight............................................. A. hupinshanensis Zheng Zheng, 2014 J. Shaanxi Normal University Nat. Sci. Ed., 42(6): 55, 58.

Type locality: China, Hunan, Shimen (Hupingshan).

Location of type specimen: holotype, male, Shaanxi Normal University, Xi’an, China.

- Longitudinal furrow of frontal ridge narrower than the first segment of antennae; width of vertex 2.5 – 3.0 times width of eye, anterior margin of pronotum reaching 2/5 part of eye, hind process of pronotum reaching 2/3 of hind femur, lateral carinae of prozona contracted backward, lower margin of median femur waved ................................................................................. A. lini sp. n.