Menosoma, Ball, 1931

Pinedo-Escatel, J. A., Becerra-Chiron, I. M. & Torres-Moreno, R., 2023, Studies on Argentinean species of the Bahitini leafhopper genus Menosoma Ball 1931 (Hemiptera: Cicadellidae); checklist, key to known species, and redescription of Menosoma taeniatum Linnavuori with a new country record, Zootaxa 5264 (2), pp. 275-283 : 277

Key to species of Menosoma from Argentina

1 Brownish forms ( Fig. 4 A–B ), occasionally with yellowish marks or orange bands on crown and pronotum; aedeagal process without dorsal tooth or serrations........................................................................ 2

- Ochraceous forms ( Fig. 1 and 4 D–E ), usually with ivory and orange bands on dorsum; aedeagal process with dorsal preapical tooth or serrations..................................................................................... 4

2 Aedeagal process similar to shaft in length ( Fig. 4 C )........................................................ 3

- Aedeagal process much shorter than shaft....................................................... M. monticola

3 Yellowish marks with orange dots on head; pygofer with black small robust posterior process................ M. pictum

- Brown color with pale marking on head ( Fig. 4 A ); pygofer with concolorous minute slender posterior process... M. cinctum

4 Aedeagus shape sinuous and curved, process with dorsal tooth; gonopore-bearing shaft strongly recurved and crossing near aedeagus apex, beyond apex ( Fig. 4 F )............................................................ M. elegans

- Aedeagus shape somewhat linear, process with indistinct dorsal teeth; gonopore-bearing shaft short and appressed to process, not reaching apex ( Fig. 2 G–H )................................................................ M. taeniatum

Figures

FIGURE 1. Menosoma taeniatum Linnavuori, 1955. (A) Habitus male, dorsal view. (B) Habitus male, anterior view. (C) Habitus female, dorsal view. (D) Habitus male, lateral view.

FIGURE 2. Male genitalia of Menosoma taeniatum Linnavuori, 1955. (A) Pygofer, lateral view. (B) Anal tube, lateral view. (C) Valve, ventral view. (D) Subgenital plate, ventral view. (E) Style, ventral view. (F) Connective, dorsal view. (G) Aedeagus, lateral view. (H) Aedeagus male, dorsal view.

FIGURE 4. Menosoma cinctum (Osborn & Ball, 1898) (A–C) and Menosoma elegans (Osborn, 1923) (D–F). (A, D) Habitus male, dorsal view. (B, E) Habitus male, lateral view. (C, F) Aedeagus, lateral view.