Tropidocephalini Muir, 1915

Wallner, Adam M. & Bartlett, Charles R., 2019, Comparative morphology of female gonapophyses IX in Delphacidae (Hemiptera: Auchenorrhyncha: Fulgoromorpha) with key to tribes, Zootaxa 4564 (1), pp. 137-172 : 155-158

Tribe Tropidocephalini Muir

Description. Gonapophyses IX linear to slightly curvilinear, average length 770.50–1977.16 µm, width 61.26– 142.98 µm; 13–17 prominent, widely spaced teeth, extending 2/3 of gonapophyses, variable in shape, ranging from rhomboid, and semi-rectangular to peg-shaped ( Figs 17 , 18 ); average height of teeth 9.40–18.16 µm; width 18.88– 19.59 µm; average space between teeth 18.05–20.83 µm; apex porrect to slightly curved in ventral view; surface variable; and apex serrate (except Purohita muiri ; Fig. 18A ).

Notes. Tropidocephalini currently includes 179 species in 35 genera, with most taxa restricted to bamboo ( Poaceae : Bambusoideae ) ( Bartlett 2010b), except for some species of Tropidocephala on other grasses, for example T. andropogonis Horvath on Bothriochloa ischaemum (L.) Keng and Chrysopogon gryllus (L.) Trin. and T. tuberipennis (Mulsant & Rey) on Imperata cylindrica (L.) P. Beauv. all on grasses in the Panicoideae ( Holzinger et al. 2003) . New World Columbisoga (3 species), Macrocorupha gynerii Muir and Malaxa occidentalis Muir were reported on Gynerium Willd. ex P. Beauv. 1812 not Bonpl. 1813 ( Poaceae : Panicoideae : Gynerieae ), which is physiognomically but not phylogenetically, similar to bamboo. New World Tropidocephalini are restricted to Central and South America ( Bartlett 2010b); however, taxa from the Old World are distributed in Australia, China, India, Indomalaya, and the Philippines ( Donaldson 1991, Chen 2003, Qin & Zhang 2010).

Figures

FIGURE 17. Lateral view of gonapophysis IX of Tropidocephalini: A) Bambusiphaga taiwanensis; B) Malaxa sp. (Bolivia); C) Malaxa sp. (Taiwan).

FIGURE 18. Lateral view of gonapophysis IX of Tropidocephalini: A) Purohita muiri; B) Tropidocephala brunnipennis; C) T. tuberipennis.