Diponthus electus ( Serville, 1838 )

Pocco, Martina E., Lange, Carlos E. & Cigliano, María Marta, 2023, Relationships and taxonomy of the genus Diponthus Stål (Orthoptera: Acridoidea Romaleidae), Zootaxa 5336 (1), pp. 33-81 : 57-58

publication ID	https://doi.org/10.11646/zootaxa.5336.1.2
publication LSID	lsid:zoobank.org:pub:F31F6A72-21B8-455D-8E64-3CE59613599C
DOI	https://doi.org/10.5281/zenodo.8268580
persistent identifier	https://treatment.plazi.org/id/03D4221B-6D1E-D434-2DC2-44F9FCCBBA66
treatment provided by	Plazi (2023-08-21 09:40:03, last updated 2024-11-30 02:31:13)
scientific name	Diponthus electus ( Serville, 1838 )
status

Treatment

Diponthus electus ( Serville, 1838) View in CoL

( Figs. 3i, j View FIGURE 3 , 7a, b View FIGURE 7 , 8h View FIGURE 8 , 9a, b View FIGURE 9 , 10h View FIGURE 10 , 11h View FIGURE 11 , 12a, b View FIGURE 12 , and 13 View FIGURE 13 ).

Acridium electum Serville, 1838 [1839]: 67 (Holotype, male, Uruguay, Montevideo, MNHN Paris)

Diponthus electus: Walker, 1870: 637 View in CoL ; Kirby, 1910: 381; Rehn, 1913: 334; Carbonell et al. 2023; Cigliano et al. 2023.

Diponthus maculiferus ( Walker, 1870) n. syn.

Acridium maculiferum Walker, 1870: 622 , 639 (Holotype, male, Uruguay, Montevideo, BMNH London NH Mus.)

Diponthus maculiferus: Kirby, 1910: 381 ; Liebermann, 1955: 337; Otte, 1995: 44; Cigliano et al. 2023.

Eynisacris extranea Walker, 1870: 639 View in CoL (Holotype, male, Uruguay, Montevideo, BMNH London NH Mus.); Kirby, 1910: 381 (= Diponthus maculiferus Walker )

Nomenclatural comments. Based on the comparison of the original descriptions, photographs of type specimens, and materials examined from the distribution range of the species ( Uruguay) the synonymy of D. electus and D. maculiferus is formally established here.

Diagnosis. Similar to D. dispar , from which it differs by the following characteristics: male cerci short, tapering towards the apex, curved downwards, dorsally straight, with a slight concavity ventrally, apex curved downwards, barely reaching the end of epiproct ( Fig. 9a View FIGURE 9 ). Epiproct elongated, with tubercles on the posterior margin; furculae smaller with broader tips, slightly acute, placed apart from the midline ( Fig. 9b View FIGURE 9 ). Dorsal valves of aedeagus curved downwards only at their apices; dilated apex ( Figs. 10h View FIGURE 10 , and 11h View FIGURE 11 ). Valves of cingulum hook-shaped ( Fig. 10h View FIGURE 10 ). Cingulum wide V-shaped; zygoma thin ( Fig. 11h View FIGURE 11 ). Epiphallus with lophi parallel to the bridge, extended but without reaching the posterior processes of the lateral plates ( Fig. 12a, b View FIGURE 12 ). Prosternal tubercle not so laterally compressed, with wider apex. Tegmina with discal area greenish-yellow, medial area transparent, anal area green ( Figs. 3i, j View FIGURE 3 , and 8h View FIGURE 8 ); with transverse veins delimiting semiregular cells ( Fig. 8h View FIGURE 8 ). Hind wings burgundy color. Smaller insects ( Fig. 3i, j View FIGURE 3 ).

Redescription and chromatic characters, and material examined. See Appendix 1

Measurements (in mm). Body length: males: 26.8 (25–29); females: 38.3 (37–39). Hind femur length: males: 15 (14–16); females: 20.3 (20–21). Tegmina length: males: 22 (20–23); females: 30.3 (28–33).

Distribution. This species is distributed in Uruguay (Rivera, Tacuarembó, Paysandú, Montevideo) ( Fig. 13 View FIGURE 13 ).

Observations. Pictet & Saussure (1887) cite the presence of D. electus in Argentina as “confins de la Patagonie (G. Claraz)”, and Rehn (1913) cites it for Misiones. However, from the descriptions provided by these authors, we consider that these records actually correspond to D. dispar .

References

Carbonell, C. S., Cigliano, M. M. & Lange, C. E. (2023) Acridomorph (Orthoptera) species from Argentina and Uruguay, Version II Available from: https: // biodar. unlp. edu. ar / acridomorph / (accessed 1 March 2023)

Cigliano, M. M., Braun, H., Eades, D. C. & Otte, D. (2023) Orthoptera species file. Version 5.0 / 5.0. Available from: http: // Orthoptera. SpeciesFile. org (accessed 1 March 2023)

Kirby, W. F. (1910) A Synonymic Catalogue of Orthoptera (Orthoptera Saltatoria, Locustidae vel Acridiidae). 3 (2). British Museum (Natural History), London, 674 pp.

Otte, D. (1995) Grasshoppers [Acridomorpha] C. Orthoptera Species File 4. The Orthopterists' Society and The Academy of Natural Sciences of Philadelphia, Philadelphia, Pennsylvania, 518 pp.

Pictet, A. & Saussure, H., (1887) Catalogue d'Acridiens. Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 7 (9), 331 - 376.

Rehn, J. A. G. (1913) A contribution to the knowledge of the Orthoptera of Argentina. Proceedings of the Academy of Natural Sciences, Philadelphia, 65, 273 - 379.

Serville, J. G. A. (1838 [1839]) Histoire naturelle des insectes Orthopteres. Librairie Encyclopedique de Roret, Paris, xviii + 776 pp.

Walker, F. (1870) s. n. In: Catalogue of the Specimens of Dermaptera Saltatoria in the Collection of the British Museum, London. Vol. 4. British Museum (Natural History), Department of Zoology, pp. 605 - 809.

Figures

FIGURE 3. Diponthus species. Males, habitus lateral views (a, c, e, g, i, k) and dorsal views (b, d, f, h, j, l). Species as indicated. Scale bar= 1 cm. Numbers indicate characters and states used in the cladistics analysis.

FIGURE 7. Head and pronotum, in lateral views (a) and dorsal views (b). Diponthus species as indicated. Numbers indicate characters and states used in the cladistics analysis.

FIGURE 8. Tegmina, color pattern of venation. Diponthus species, as indicated. Numbers indicate characters and states used in the cladistics analysis.

FIGURE 9. Male abdominal terminalia, in lateral views (a) and dorsal views (b). Diponthus species as indicated. Numbers indicate characters and states used in the cladistics analysis.

FIGURE 10. Distal portion of aedeagal valves, lateral view. Diponthus species, as indicated.

FIGURE 11. Distal portion of aedeagal valves, dorsal view. Diponthus species, as indicated.

FIGURE 12. Epiphallus, dorsal views (a) and frontal views (b). Diponthus species, as indicated. Numbers indicate characters and states used in the cladistics analysis.