Asymmetritania Storozhenko, 2021

Storozhenko, Sergey Yu., 2021, On the exact position of the tribe Incolacridini in the modern classification of grasshoppers (Orthoptera: Acrididae), Zootaxa 4970 (1), pp. 106-118 : 113

Genus Asymmetritania Storozhenko , gen. nov.

Type species: Stolzia vietnamensis Storozhenko, 2020 , here designated.

Description. Head in frontal view oval; frontal ridge narrow, almost reaching the clypeus ( Fig. 27 ). Face in lateral view reclinate; frontal ridge projecting between the antennae but forming a relatively short rostrum ( Figs. 25, 26 ). Ventral genicular lobes of the hind femora narrowly triangular with apex obtuse, without spine ( Fig. 14 ). Male 10th abdominal tergite with furculae. Male supra-anal plate long, with a median basal impression, lateral margins with a pointed tooth in apical third, apex rounded ( Figs. 13 , 30 ). Male cerci compressed, short, conical, with or without a small preapical tooth. Valves of ovipositor short, with apex rounded and strongly dentate ( Fig. 29 ). Male genitalia: epiphallus strongly asymmetrical; bridge narrow; left lophus large, extending; right lophus small; ancorae absent; oval sclerites separated from epiphallus ( Figs. 22 , 32 ); apodemes long and narrow; valves of cingulum and apical valves of penis long, completely covered by ectophallic sheath of penis; basal valves of penis connected with apical ones by a short sclerotized or membranous flexure ( Figs. 21 , 33 ).

Composition. The genus consists of two species from continental part of South-East Asia.

Etymology. From Latin asymmetrica and the genus name Bettotania . Genus feminine.

Figures

FIGURES 25–33. Asymmetritania vietnamensis comb. nov. 25. Female body, lateral view; 26. Male body, lateral view; 27. The same, frontal view; 28. The same, dorsal view; 29.Apex of female abdomen, lateral view; 30. Apex of male abdomen, dorsal view; 31. Female head and sternal plate, ventral view; 32. Male genitalia, dorsal view; 33. The same, lateral view.

FIGURES 1–14. Subfamily Incolacridinae. 1. Bettotania cincifemur, female body, lateral view (schematic after Miller, 1935); 2. Stolzia rubromaculata, male head and pronotum, lateral view (schematic after C. Willemse, 1930); 3. Stolzia javana, female head, frontal view; 4–7. Incolacris rubritarsi, female: 4. Head and pronotum, lateral view; 5. Head, frontal view; 6. Apex of abdomen, lateral view (after Hollis, 1975); 7. The same, ventral view (after Hollis, 1975); 8–12. Incolacris jianfengensis comb. nov., male (after Zheng & Ma, 1989): 8. Head and pronotum, lateral view; 9. The same, dorsal view; 10. Apex of abdomen, dorsal view; 11. The same, lateral view; 12. Hind knee, lateral view; 13. Asymmetritania asymmetrica comb. nov., male apex of abdomen, dorsal view (after Ingrisch, 1989); 14. Asymmetritania vietnamensis comb. nov., male hind knee, lateral view.

FIGURES 15–24. Male genitalia of the subfamily Incolacridinae (15–18 after Hollis, 1975 and 19–24 after Ingrisch, 1989). 15. Incolacris trifasciata, epiphallus, dorsal view; 16. The same, Stolzia javana; 17. The same, Stolzia aberrans; 18. The same, Stolzia fasciata; 19–21. Bettotania maculata: 19. Epiphallus, dorsal view; 20. Phallic complex (epiphallus removed), dorsal view; 21. The same, lateral view; 22–24. Asymmetritania asymmetrica comb. nov.: 22. Epiphallus, dorsal view; 23. Phallic complex (epiphallus removed), lateral view; 24. The same, dorsal view. (Ae—ancorae; An—anterior projections of epiphallus; Ap—apical valves of penis; Apd—apodemes; Bp—basal valves of penis; Br—bridge; Cv—valves of cingulum; Fx—flexure; Lel—left lophi of epiphallus; Ler—right lophi of epiphallus; Os—oval sclerites; Rm—rami of cingulum; Sh—ectophallic sheath of penis; Zyg—zygoma).