Lutosa, Walker, 1869

Cadena-Castañeda, Oscar J., García, Alexander García, Nos, Maria Del Pilar Castella-, Sarmiento, Juan Pablo Prias & Tavares, Gustavo Costa, 2022, Studies on chevron crickets: Contribution to the knowledge of Lutosinae / ini taxa (Orthoptera: Anostostomatidae), Zootaxa 5178 (4), pp. 347-379 : 351

Key to Lutosa species based on males

1. Hind tibia straight, paraprocts unarmed, or if they are armed with processes in variable shapes........................ 2

- Hind tibia curved, each paraproct with a forked process at the apex.................................... L. brasiliensis

2. Posterior border of the subgenital plate, in dorsal view with calluses, with or without denticles ( Figs. 8D, E )............. 3

- Posterior border of the subgenital plate, in dorsal view without modifications or sclerotized calluses ( Figs. 2F , 7B )........ 6

3. Fore tibia with tympana ( Fig. 8A ). Posterior border of the subgenital plate almost straight and with well-sclerotized calluses ( Fig. 8E )............................................................................................ 4

- Fore tibia without tympana ( Fig. 10C ). Subgenital plate with a U-shaped notch and with moderately sclerotized calluses............................................................................................. L. paranensis

4. Dorsal surface of the body with constant coloration, predominantly dark brown or black ( Fig. 8B )..................... 5

- Dorsal surface of body variable, pro- and mesonotum reddish brown, metanotum and other abdominal tergites light reddish brown, with posterior border outlined in black ( Fig. 6B ).............................................. L. cubaensis

5. Epiproct triangular; paraproctal processes broad, flattened dorsoventrally, and well sclerotized ( Fig. 8D ). Posterior border of the subgenital plate almost straight, with a slight undulation ( Fig. 8E )..................................... L. goeldiana .

- Epiproct quadrangular; paraproctal processes small, slender, and hooked. Posterior border of the subgenital plate with a small medial rectangular prolongation................................................................... L. imitata

6. Membranous space between the tenth tergite broad and in the shape of an inverted crescent moon. Epiproct rectangular, longer than wide, with a rounded posterior edge. Paraproctal processes slender and hooked, curved downwards and conspicuously protruding on the sides of the epiproct............................................................ L. normalis

- Membranous space between the tenth tergite narrow and inverted-Y-shaped. Epiproct triangular, as long as wide. Paraproctal processes like a short hook, curved upwards and slightly protruding on the sides of the epiproct ( Fig. 2E ).................................................................................................... L. quaresmai n. sp.

Figures

FIGURE 2. Lutosa quaresmai n. sp. male. A. Habitus in lateral and B. dorsal view. C. Face. D–G. Terminalia in dorsal, axial, ventral and lateral views respectively. H. Cerci and lateral plate of last tergite in lateral view.

FIGURE 6. Lutosa cubaensis male. A. Habitus in lateral and B. dorsal view. (Photos: Luc Willemse).

FIGURE 7. Lutosa cubaensis male. A. Face and legs in frontal view. B–E. Terminalia in dorsal, lateral, axian and ventral view. (Photos: L. Willemse).

FIGURE 8. Lutosa goeldiana male. A. Habitus in lateral and B. dorsal view. C. Face. D. Terminalia in dorsal view. E. Detail of apex of subgenital plate. F. Subgenital plate. (Photos: J. Hollier).

FIGURE 10. Lutosa paranaensis female. A. Habitus in lateral view. B. Face. C. Head and thorax in lateral view (see the absence of tympana). D. Terminalia in dorsal view. E. Subgenital plate. F. Ovipositor in lateral view. (Photos B. Garcete).