Legua rosea Amédégnato and Poulain, 1986

Silva, Daniela Santos Martins, da, Renan, Olivier, Silva, de, Larissa Lima, Queiroz, Pereira, Marcelo Ribeiro, Boscardin, Jardel & D’Angelis, Guilherme Rabelo, 2024, Long time no see: New reports of Legua rosea Amédégnato and Poulain, 1986 (Orthoptera: Caelifera: Romaleidae: Romaleinae: Leguini), a rare arboreal grasshopper from Brazil, Insecta Mundi 2024 (50), pp. 1-11 : 6

Legua rosea Amédégnato and Poulain, 1986 ( Fig. 2–4 )

Correction on the type locality. The holotype of L. rosea has on its locality label the following information: “ Brazil: Matto Grosso, Rio Verde. Nov.1959. Anton Maller” ( Fig. 2A ). However, the correct name of this municipality is “Rio Verde de Mato Grosso ” and is located in the north region of the Mato Grosso do Sul state. The problem with this locality is recurrent mainly in works that use specimens collected in this place before 1977 when the division of the Mato Grosso state took place. This can be seen, for example, in Monné et al. (2023), where three species of Cerambycidae had their type localities corrected.

Examined material. BRAZIL. Goiás (new record): Catalão (18°04′10.6″S 47°55′59.7″W), 23.I.2023, D’Angelis G. R. col. 1 ♂ pinned ( DSM 108 ) ( Fig. 4A–C ). Additional material: Mato Grosso do Sul: Coxim, Pesqueiro Cachoeira das Palmeiras II, near to the Taquari River (18°21′44.85″S 54°36′52.85″W), 06–07.XI.2015, Olivier, R.S. & Monteiro, U.M. col. 1 ♂ pinned ( ZUFMS ORT02264 ) ( Fig. 4D–E ) ; Maranhão, Caxias, Fazenda Bom Fim , 28.IV.1998, Oliveira, F.L. col. 1 ♂ pinned ( Fig. 2C ) .

Descriptive notes based on the examined specimens. Body generally yellow-green; head and pronotum with a well-marked median longitudinal stripe; the lower edge of the lateral lobes of the pronotum forming an acute angle at the front, entirely bordered by a narrow whitish stripe; wings colored at the base in purplish pink; length of the male subgenital plate, which is long, twice the length of the supraanal plate (Amédégnato and Poulain 1986) ( Fig. 2 , 4 ). This species is easily distinguished from L. crenulata ( Fig. 1 ) by the head and pronotum without highlighted median longitudinal stripe; wings salmon pink or orange; male subgenital plate flattened laterally and prolonged into an upward curving point (Amédégnato and Poulain 1986; Rowell 2013). Whereas L. rosea is only known from Brazil, there are records for L. crenulata from Costa Rica, western Panama ( Fig. 1A ), and Ecuador ( Fig. 1D ). In our study, the iNaturalist records ( Table 1) allowed us to verify details of the morphology and coloration of a living female, since there are neither female reports from literature, nor museum material. However, we were unable to confirm some details of the female morphology from the images.

Measurements (mm). Type series (5 specimens). h: 15-16.5; f:?; p: 9-10; t: 58-61; hf: 25-26.5: ht:?; sgp:? (in Amédégnato and Poulain 1986).

New record: Catalão , Goiás (1 specimen). h:15.7 ; f: 9,5; p: 11.1; t: 60; hf: 26.9; ht: 21.1; sgp: damaged.

Additional material: Coxim , Mato Grosso do Sul (1 specimen). h:15.8 ; f: 7.7; p: 10.4; t:61.8; hf: 26.0; ht: 21.3; sgp: 12.1 and Caxias , Maranhão (1 specimen). h: 15 ; f: 8.5; p: 10; t: 57.5; hf: 25; ht: 21.4; sgp: 8.5.

Additional reports from iNaturalist ( Table 1). In addition to the two specimens collected, new occurrences in Brasília, Goiás, Minas Gerais, and São Paulo states were reported ( Table 1).

Figures

Figure 1. Legua crenulata (Stoll, 1813) specimens. A) Male, lateral view with labels from ANSP. B) Female, lateral view with labels from ANSP. C) Male dissected, lateral view with labels from ANSP. D) Female, lateral view with labels from MNHN. Scale bar = 1 cm.

Figure 2. Legua rosea Amédégnato and Poulain, 1986 specimens. A) Male holotype, lateral view with lateral and dorsal head details (photos by Holger Braun from UMMZ). B) Male paratype, lateral view with labels (photo by Muséum national d’Histoire naturelle, Paris (France) MNHN-EO-CAELIF4529). C) Male, lateral view from INPA. Scale bar = 1 cm.

Figure 3. Distribution of Legua rosea Amédégnato and Poulain, 1986. A) Map of Brazil indicating the new specimen record (red circle), and iNaturalist and additional records (black circles), and a dorsal view of the Maranhão specimen. B) Area where the specimen from Goiás, Catalão municipality countryside was collected (photo by Guilherme Rabelo D’Angelis). C) Area where the specimen from Coxim, Mato Grosso do Sul was collected (photo by Urielton Martins Monteiro).

Figure 4. Legua rosea Amédégnato and Poulain, 1986A–C) Newly reported male specimen from Goiás state. A) Lateral view. B) Hair tufts on the final abdominal sternites.C) Slight concavity of the sternum.D–E) Male specimen from Mato Grosso do Sul state. D) Lateral view. E) Dorsal view.