Megatympanon Piza, 1958

Mendes, Diego Matheus De Mello, Sobral, Rafael & Neto, Alberto Moreira Da Silva, 2023, The Austral Predator Katydid-new species of Megatympanon Piza, 1958 (Orthoptera: Tettigoniidae: Listroscelidinae: Terpandrini) from the Brazilian Atlantic Rainforest, Zootaxa 5263 (3), pp. 430-440 : 431

Megatympanon Piza, 1958

Figures 1–9

Megatympanon Piza, 1958 ; Piza 1971; Reik, 1769; Rentz, 2001; Rentz, 2010; Fialho et. al, 2014; Cigliano et. al, 2023 Megatympanophon Rentz, 1979 (Misspelling)

Diagnosis. Sclerites of antennal sockets touching in midline, concealing the tip of fastigium ( Fig. 2B ). Thoracic auditory spiracle oval and wide, partially covered by the paranotum, free from pronotum ( Fig. 2D ). Sternites with two spine-shaped processes ( Figs. 2E and 5E ) ( Fialho et al. 2014). Tegmina with distinct modifications in veins AA, CuP and CuA, forming two big mirror cells in basal area ( Fig. 3 and 6 ).

Distribution. Brazil: Espírito Santo (new record), Rio de Janeiro, Minas Gerais (new record), São Paraná, Paran (new record), Santa Catarina (new record) and Rio Grande do Sul (new record).

Figures

FIGURE 1. Pictorial key for species of Megatympanon Piza, 1958.

FIGURE 2. Megatympanon speculatum, male. A: habitus, dorsal view; B: head, frontal view; C: head and pronotum, dorsal view; D: head and pronotum, lateral view; E: Thoracic sternites, ventral view; F: foreleg, lateral view; G: midleg, lateral view; H: stridulatory area, dorsal view; I–K: Terminalia in ventral, dorsal and lateral view respectively. Abbreviations: Mes: mesobasisternum; Met: metabasisternum; Cer: cerci; Sty: styli; Pl: subgenital plate.

FIGURE 3. Megatympanon speculatum, right tegmina of male in dorsal view. Abbreviations: AP: Posterior anal vein; AA: anterior anal vein; CuA: anterior cubital vein; CuP: posterior cubital vein; MA: anterior median vein; MP: posterior median vein; R: radial vein; Sc: subcostal vein.

FIGURE 4. Megatympanon speculatum, stridulatory file of male. A: left file; B: right file.

FIGURE 5. Megatympanon austroraptorum sp. nov., holotype male. A: habitus, dorsal view; B: head, frontal view; C: head and pronotum, dorsal view; D: head and pronotum, lateral view; E: Thoracic sternites, ventral view; F: foreleg, lateral view; G: midleg, lateral view; H: stridulatory area, dorsal view; I–K: Terminalia in ventral, dorsal and lateral view respectively. Abbreviations: Mes: mesobasisternum; Met: metabasisternum; Cer: cerci; Sty: styli; Pl: subgenital plate.

FIGURE 6. Megatympanon austroraptorum sp. nov., right tegmina of holotype male in dorsal view. Abbreviations: AP: Posterior anal vein; AA: anterior anal vein; CuA: anterior cubital vein; CuP: posterior cubital vein; MA: anterior median vein; MP: posterior median vein; R: radial vein; Sc: subcostal vein.

FIGURE 7. Map of Megatympanon austroraptorum sp. nov., stridulatory file of male. A: left file; B: right file.

FIGURE 8. Megatympanon austroraptorum sp. nov., male specimen alive from Morro Reuter, Rio Grande do Sul (photo: Ryan Alexander)

FIGURE 9. Map of Megatympanon species geographical records. Area of the Serra do Mar coastal forests modified from WWF.