Machima Brunner von Wattenwyl, 1878

Cadena-Castañeda, Oscar J., Braun, Holger & García, Alexander García, 2022, The tribe Dysoniini part VI: Phylogeny, biogeography and evolutionary trends of the lichen katydid genera (Orthoptera: Tettigoniidae: Phaneropterinae). Eleventh contribution to the suprageneric organization of Neotropical phaneropterines, Zootaxa 5166 (1), pp. 1-93 : 26-30

Machima Brunner von Wattenwyl, 1878

Diagnosis. Vertex conical and relatively short, without expansion. Pronotal disc with a pattern of callose stripes. Hind femora and tibiae with curved and elongated spines. Tegmina with undulate contour ( Fig. 16A ). Male cerci flattened and ribbon-like with an elongated or abruptly pointed tip, lobe or inner branch sub-triangular or spineshaped ( Figs. 16B–J ). Ovipositor long, curving slightly upward, with the apical region slightly serrulate. Tips of upper and lower valve rounded ( Fig. 16F ).

Type species. Phaneroptera phyllacantha Burmeister, 1838 , by subsequent designation.

Distribution. Along the Atlantic coast of Brazil, Mata Atlântica and Araucaria angustifolia forest ( Map 2 ).

Key to species of Machima

(adapted from Rehn 1950 and Antunes & Takiya 2020)

1. Main lobe of male cercus elongated and curving weakly at apical half, accessory lobe longer than wide................. 2

- Main lobe of male cercus elongated and curving abruptly at apical two-thirds ( Fig. 16B,C ), accessory lobe as long as wide......................................................................... M. itatiaia Antunes & Tikiya, 2020

2. Male cerci elongated, slightly curving upward, inner margin concave with a slight crest-like prolongation from base to tip, distal portion rounded with a small, pointed projection on the dorso-apical margin ( Fig. 16D, E ).................................................................................................. M. phyllacantha ( Burmeister, 1838)

- Male cerci elongated but not curving upward, inner margin concave with uniform basal region, without inner prolongations and narrow tip; male cerci armed at the internal base with a spine-like, internally projecting process....................... 2

3. Vertex process more evident, short and conical; male cerci shorter and somewhat more robust, main branch moderately sigmoid and distally not strongly falcate, ventro-internal margin with several spaced nodes ( Fig. 16G–H )... M. scalprum Rehn, 1950

- Vertex process less evident, rectangular in lateral view; male cerci longer and overall thinner, main branch hardly sigmoid, distal two-fifths sharply bent and falcate, ventro-internal margin without spaced nodes ( Fig. 16I–J )................................................................................................... M. paranensis Rehn, 1950

Figures

Map 2. Distribution map of Machima species.

FIGURE 16. Machima species. A–C. M. itatiaia Antunes & Takiya, 2020. A. Male habitus in lateral view. B. Cerci in dorsal and, C. lateral view respectively. F. Ovipositor. D–J. Cerci in dorsal and lateral view: D–F. M. phyllacantha. G–H. M. scalprum. I–J. M. paranensis. (Figs. G–J. after Rehn, 1950).