Bannatettix Zheng, 1993

Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2012, A systematic study of the genus Bannatettix Zheng (Orthoptera: Tetrigidae), Journal of Natural History 46 (37 - 38), pp. 2377-2386 : 2378-2381

Genus Bannatettix Zheng, 1993

Bannatettix Zheng, 1993a: 46 ; Zheng, 1993b: 80; Jiang and Zheng, 1998: 360; Liang and Zheng, 1998: 222; Zheng, 2005: 426; Deng et al., 2007: 382.

Type species: Bannatettix longicornia Zheng, 1993 .

Body size medium or small, slender. Head projecting over dorsal level of pronotum. Vertex generally as broad as or narrower than width of one eye. In lateral view, vertex not visible, frontal ridge archly protruding between antennae. Antennae filiform, inserted below lower margins of eyes. Eyes globular, projecting over dorsal level of pronotum. Lateral ocelli placed slightly below lower margins of eyes. Disc of pronotum flat, anterior margin of pronotum straight, middle keel of pronotum distinct, pronotal process reaching or extending beyond top of hind femora. Posterior margins of lateral lobes of pronotum with two concavities, posterior angles of lateral lobes of pronotum turned downwards, generally round at apex. Tegmina elongated, rounded at apex. Wings developed, reaching or surpassing top of hind process. Dorsal and ventral margins of fore and middle femur straight or lower margins of middle femur undulated, width of middle femur equal to or narrower than width of tegmina, middle tibia not constricted at apex, outer side of hind femur without projecting node.

Bannatettix Zheng was placed into Tetriginae (Tetrigidae) based on filiform antenna, posterior angles of lateral lobes of pronotum turned downwards, generally round at apex. However, Bannatettix is distinguished from other Tetrigidae genera by its head projecting above upper level of pronotum, frontal ridge archly protruding between antennae, antennae inserted below lower margins of eyes, and middle tibia not constricted at apex. Bannatettix is closely related to Euparatettix Hancock and Ergatettix Kirby. It differs from the former by: frontal costa arcuately produced between antennae, antennae inserted just below lower margins of eyes, lateral ocelli placed near lower third or lower margins of eyes; and from the latter by: middle tibia not constricted at apex, outer side of hind femur without projecting node.

Species of the genus Bannatettix Zheng are typically inhabitants of moist places in tropical rainforests, such as moist stony ground, fallen leaves, shrubbery. They feed on mosses and other forms of humus, and they generally overwinter as adults.

Key to the species of Bannatettix Zheng

1. Pronotum short, not reaching top of hind femora; wings shortened, only reaching posterior margin of second abdominal segment ( Figure 1A )....................................... Bannatettix brevipennis Deng, Zheng et Wei Pronotum elongate, extending far beyond top of hind femora; wings developed, reaching or surpassing top of pronotal process ( Figure 1B )......... 2

2. Lateral ocelli situated at lower margin of eyes; antennae inserted far below lower margin of eyes ( Figure 1C ); with a pair of very long, parallel longitudinal keels between shoulders...... Bannatettix menghaiensis Zheng Lateral ocelli situated at lower third of eyes; antennae inserted below lower margin of eyes; with a pair of short, oblique, longitudinal keels between shoulders.............................................................. 3

3. Frontal ridge narrowly bifurcate; pronotal process shorter, only reaching middle of hind tibia ( Figure 1D )........................................ 4 Frontal ridge widely bifurcate; pronotal process very long, extended to or beyond top of hind tibia ( Figure 1E ).................................... 6

4. In lateral view, dorsal margin of pronotum straight; with a pair of short keels between shoulders; hind wing reaching top of hind process ( Figure 1D ); width of mid-femur narrower than that of elytra; dorsal and ventral margins of hind femur with small teeth; lower side of hind femur brown; hind tibia brown............................................... Bannatettix longicornia Zheng In profile, dorsal margin of pronotum distinctly bulging before shoulders; without a pair of short keels between shoulders; hind wing extending beyond top of hind process ( Figure 1E ); width of mid-femur equal that of elytra; dorsal and ventral margins of hind femur with big teeth.................. 5

5. Lateral keels of prozona constricted backwards; humeral angle obtuse; fore and middle legs without long hair; lower side of hind femur black; hind tibia black............................ Bannatettix serrifemoralis Zheng and Shi Lateral keels of prozona parallel; humeral angle arcuate; fore and middle legs with numerous long hair; lower side of hind femur brown; hind tibia brown................................... Bannatettix barbifemura sp. nov.

6. Width of vertex distinctly or slightly narrower than width of one eye; humeral angle obtuse angular; width of middle femur narrower than width of tegmina................................................................ 7 Width of vertex as wide as width of one eye; humeral angle rounded angular or rounded; width of middle femur equal to width of tegmina............ 8

7. Width of vertex distinctly narrower than width of one eye; middle keel of pronotum indistinct in prozona; dorsal margin of pronotum distinctly elevated before shoulders and flat behind in profile; lower outer side of hind femur black ( Figure 1E )............................. Bannatettix ruiliensis Zheng Width of vertex slightly narrower than width of an eye; middle keel of pronotum complete; dorsal margin of pronotum slightly elevated before shoulders in profile, wave like, flat behind ( Figure 1F ); lower outer side of hind femur not black ( Figure 1G ) Bannatettix guangxiensis Zheng and Jiang

8. With a pair of short oblique longitudinal keels between shoulders ( Figure 1H )............................................................ 9 Without a pair of short oblique longitudinal keels between shoulders ( Figure 1I )............................................................ 10

9. Width of frontal ridge equal to width of scapus; length of middle segment of antenna 10 times its width; third pulvillus of first segment of hind tarsi equal to first and second pulvilli; length of upper valvula 2.5 times its width; lower outer side of hind femur not black; hind tibia dark brown.......................................................... Bannatettix longqishanensis Zheng Width of frontal ridge wider than width of scapus of antenna; length of middle segment of antenna six or seven times its width; third pulvillus of first segment of hind tarsi longer than first and second pulvilli; length of upper valve of ovipositor four times its width; lower outer side of hind femur black; hind tibia black ( Figure 1J ).............. Bannatettix nigritibialis Zheng and Shi

10. Dorsal margin of pronotum wave like before shoulders and straight behind shoulders in profile, lateral keels of prozona parallel, middle femur equal to width of tegmina, posterior margin of subgenital plate three-toothed, hind tibia yellowish brown, with two black bands............................................................. Bannatettix tianlinensis Zheng, Jiang and Liu Dorsal margin of pronotum wave-like in profile, lateral keels of prozona constricted backwards, middle femur narrower than width of tegmina ( Figure 1K ), posterior margin of subgenital plate triangularly convex, hind tibia brown, with light ring at base and middle........................................................... Bannatettix tenuifemura Deng, Zheng et Wei

Figures

Figure 1. (A) Body of Bannatettix brevipennis Deng, Zheng et Wei, 2008, lateral view; (B) body of Bannatettix menghaiensis Zheng, 1993, lateral view; (C) head of Bannatettix menghaiensis Zheng, 1993, frontal view; (D) body of Bannatettix longqishanensis Zheng, 1993, lateral view; (E) body of Bannatettix ruiliensis Zheng, 1993, lateral view; (F) body of Bannatettix serrifemoralis Zheng and Shi, 2009, lateral view; (G) body of Bannatettix guangxiensis Zheng and Jiang, 1997, lateral view; (H) body of Bannatettix longqishanensis Zheng, 1993, dorsal view; (I) body of Bannatettix tianlinensis Zheng, Jiang and Liu, 2005, dorsal view; (J) body of Bannatettix nigritibialis Zheng and Shi, 2009, lateral view; (K) body of Bannatettix tenuifemura Deng, Zheng et Wei, 2008, lateral view.