Lamellitettigodes Günther, 1939

Lu, Yong-Zhong & Zha, Ling-Sheng, 2020, A new species of the genus Lamellitettigodes (Orthoptera: Tetrigidae) from PR China, with taxonomic notes on the genus, Zootaxa 4851 (2), pp. 338-348 : 339

Genus Lamellitettigodes Günther, 1939

Types species: Lamellitettigodes contractus ( Bolívar, 1887) (= Paratettix contractus Bolívar, 1887 ; Tetrix contractus ( Bolívar, 1887))

= Xistra tricristata Bolívar, 1898 (= Paratettix tricristatus ( Bolívar, 1898) ; Lamellitettigodes contractus tricristatus ( Bolívar, 1898) ; Lamellitettigodes tricristatus ( Bolívar, 1898))

= Xistra tricristata var. sumatrana Bolívar, 1898 (= Xistra tricristata sumatrana ( Bolívar, 1898) ; Xistra sumatrana ( Bolívar, 1898) ; Xistra tricristata sumatrensis ( Bolívar, 1898) ; Lamellitettigodes sumatrana ( Bolívar, 1898))

= Tetrix cuspidata Hancock, 1907 (= Tetrix cuspidatus ( Hancock, 1907) , Acrydium cuspidate ( Hancock, 1907))

= Probolotettix corticolus Blackith & Blackith, 1987

Key to species of the genus Lamellitettigodes Günther, 1939 (annotated key from Tumbrinck, 2019)

1. Frontal part of the median carina of pronotum (before the end of tegmen) clearly elevated and compressed.............. 2

– Frontal part of the median carina of pronotum (before the end of tegmen) lower, it may be a little bit lamellate........... 4

2. Antennae short, only 1.3 times as long as fore femur; prozonal carinae strongly contracted backwards; hind pronotal process surpasses apices of hind tibiae. Distribution: New Guinea, Biak, and the Bismarck Archipelago (New Britain and New Ireland).......................................................................... L. cultratus ( Bolívar, 1898)

– Antennae long, about 2 times as long as fore femur; prozonal carinae slightly contracted backwards; hind pronotal process reaches about the middle of hind tibiae.................................................................... 3

3. Lateral carinae of vertex lower than the top of eyes; anterior margin of pronotum truncated. Distribution: PR China (Zhejiang, Fujian, Guizhou, Guangxi and Hainan)................................... L. bimaculatus ( Zheng, 1993) comb. nov .

– Lateral carinae of vertex higher than the top of eyes; anterior margin of pronotum obtusely angled forwards. Distribution: PR China (Hainan).................................................................... L. diversifemoris sp. n.

4. In frontal view, distance between the anterior margin of vertex and the upper margin of superior ocelli equal to or shorter than the length of one superior ocellus; bifurcation of frontal costa located above the middle of the distance................. 5

– In frontal view, distance between anterior margin of vertex and upper margin of superior ocelli longer than the length of one superior ocellus; bifurcation of frontal costa located at, or below the middle of the distance.......................... 8

5. In lateral view, median carina of pronotum before the end of tegmen weakly undulated, weakly arcuate or nearly straight.. 6

– In lateral view, median carina of pronotum before the end of tegmen clearly undulated.............................. 7

6. Median carina of pronotum before the end of tegmen wholly lower arcuate in lateral view; posterior pronotal process only reaches one-third of hind tibiae. Distribution: the Philippines, Indonesia and Thailand?.......... L. signatus ( Bolívar, 1887)

– Median carina of pronotum before the end of tegmen weakly undulated in lateral view; posterior pronotal process nearly reaches apices of hind tibiae. Distribution: widely distributed in Southeast Asia, including southern PR China (Yunnan and Hainan), Vietnam, Thailand, peninsular Malaysia, Sumatra and adjacent islands (Enggano, Mentawai), Java, Borneo, the Philippines, Moluccas islands, New Guinea (with adjacent islands Aru, Waigeo) and Timor.............. L. sagittatus ( Bolívar, 1887)