Magnumtergalis albonigra ( Karny, 1929 ) Cadena-Castañeda & Giraldo & Díaz & Soto, 2020

Cadena-Castañeda, Oscar J., Giraldo, César Quiroga, Díaz, Carlos Julio Arango & Soto, Wolfang Andrés Rodríguez, 2020, Studies of Raspy Crickets: Magnumtergalis n. gen. a new gryllacrid genus with elongate male terminalia (Orthoptera: Gryllacrididae) from Colombia, Zootaxa 4896 (1), pp. 123-130 : 128

Magnumtergalis albonigra ( Karny, 1929) n. comb.

( Fig. 2 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:20363

Type material. Holotype. Male. Colombia, [Caldas], Manizales ( MNCN).

Additional information in description. Male. In addition to the characters mentioned for the generic description: Coloration. Completely black, except for the articulations of the legs, tarsi, and the distal two-thirds of the tegmina which are yellow ( Fig. 2 ). Head. Rounded and prominent, lateral ocelli circular and reduced, with diffused edges; undeveloped central ocellus ( Fig. 2C ). Pronotum. Smooth and shiny, with two sulci connected on the lateral lobes of the pronotum forming an “U” in lateral view, which divides the pronotal zones ( Fig. 2 A-B). Legs. Hind femur without conspicuous spines on ventral margin; hind tibia with three dorsal spines on the outer margin and two dorsal spines on the inner margin; all genicular lobes unarmed. Wings. Left tegmen partially overlapping the right and extending to the eighth abdominal tergite ( Fig. 2B ). Abdomen. Ninth tergite thickened and projecting conspicuously, and curving downwards since the mid-region, apex not conspicuously expanded to the sides, distal edges rounded and tapering from the base of the tergite to near the apex, where it expands again ( Fig. 2E ), distal portion truncated and partially curved inward, and with a medial U-shaped notch on the posterior margin ( Fig. 2F ). Cerci cylindrical and with a pointed apex, the cerci curve upward and slightly inwards over the ninth tergite ( Fig. 2 E-F). Paraprocts reduced and not visible, covered in the same way as the epiproct by the ninth abdominal tergite. Subgenital plate a little wider than long; prolongation of the posterior border triangular and with the acute apex; cylindrical styli and not flattened dorsoventrally ( Fig. 2G ).

Female. Unknown.

Measurements (mm): LB: 12.4. Pr: 3.2. Teg: 7.4. HF: 6.6. HT: 6.2. SP: 2.5.

Comments. Karny (1929) originally described this species in the genus Gryllacris Serville, 1831 ; later the same author placed it in the genus Brachybaenus ( Karny, 1937) . Subsequently, Hubbell (1990), in his unpublished notes (cited by Otte, 2000), suggested this species should belong to the genus Progryllacris , and this suggestion was adopted by the Orthoptera Species File ( Cigliano et al. 2020). Due to the characteristics mentioned in the description of the genus and the outstanding characters of the species, a new combination is proposed, accommodating P. albonigra in the new genus Magnumtergalis n. gen., better adjusting to the diagnostic characteristics, in which the unusual terminalia stands out. The new combination becomes effective as follows: Magnumtergalis albonigra ( Karny, 1929) n. comb.

Figures

FIGURE 2. Magnumtergalis albonigra n. comb. male holotype. A-B. Habitus in lateral and dorsal views respectively. C. Frons. D-G. Terminalia in lateral, dorsal, latero-ventral and ventral view respectively. Photos: M. Paris (MNCN).