Pepumiri Cadena-Castañeda, 2022

Cadena-Castañeda, Oscar J., Poveda, Miguel D., Pulido, Sergio Omar & Ariza, Jeison Eduardo García, 2022, Studies on Neotropical Pseudophyllinae: The placement and status of Dasyscelidius species (Orthoptera: Tettigoniidae), Zootaxa 5099 (1), pp. 129-136 : 133

Pepumiri Cadena-Castañeda n. gen.

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:516182

Diagnosis. Slim and medium size (25 mm). Head elongated from a frontal view, curved from a side view, curving downward and backward. The mouthparts between hypognathous and opisthognathous types ( Fig. 2A ); very narrow space between antennal sockets, short fastigium, reduced and not visible ocelli, scapus, and pedicelus unarmed, maxillary palps moderately elongated. Thorax. Pronotum granular, sub-cylindrical ( Fig. 2B ); lateral lobes are three times longer than high, humeral notch undeveloped ( Fig. 2A ). Sternum. Prosternum armed with two conspicuous triangular spines. Upper lobe of mesosternum medium-sized, surrounded by lateral lobes with elevated subtriangular edges, covering the base of meso-coxae. Metasternum with no elevated lateral lobes, covered in the anterior margin by the upper lobe, metafurcal sulcus moderately elongated and not curving abruptly. Wings. Brachypterous, tegminae covering up to the second abdominal segment ( Figs. 2 A-B). Legs slim; front borders and middle legs well defined and delimited by a carina on each edge. Fore coxae armed with a dorsal spine, all coxae ventrally disarmed. Abdomen without modifications on the posterior edge. Tenth tergite narrow and moderately sclerosed (more than the other abdominal tergites). Cerci are very robust and armed inner by preapical spines ( Figs. 2 C-D). Subgenital plate noticeably longer than wide, with articulated styles ( Fig. 2D ). Female unknown.

Taxa included. Pepumiri brasiliensis ( Beier, 1962) n. comb. by monotypy and original designation.

Etymology. The name is an arbitrary combination of letters derived from two words in the Brazilian indigenous language Tupi: pépó = wings + mirĩ = small, and it refers to the katydids’ small-sized wings. This name is neither non-Latin nor Greek, and gender is established as neuter.

Distribution. Goiás, Veadeiros (Brazilian Cerrado).

Comparison. The Pepumiri n. gen., characteristics are distinctive and well-differentiated from other genera from the tribe Pleminiini . Compared to other genera of brachypterous species, such as Dasyscelus and Pleminia Stål, 1874 , these specimens have triangular and lamellar spines on the legs. Furthermore, the head and mouthparts are hypognate, unlike the Pepumiri n. gen., located behind, almost on the thoracic sternites. The tegminae venation in Dasyscelus and Pleminia is less reticulated and has larger spaces between the longitudinal and transverse veins. Known males from the last two genera have short and slightly thickened stridulation crest, in contrast to P. brasiliensis n. comb., which have an elongated and thickened stridulation crest. The cerci of the males of this new genus are very distinctive because the cerci of other genera compared here are cylindrical, with similar thickness throughout their length and a distal spine, while P. brasiliensis n. comb. has thickened cerci and two preapical spines.

Comments. We include Dasyscelidius brasiliensis Beier, 1962 as the only known species and as a new combination of Pepumiri n. gen. This species inhabits the Cerrado ecoregion in Brazil: vast savanna whose higher elevation areas have humid conditions, ideal for species such as Pepumiri brasiliensis ( Beier, 1962) n. comb. In this way, it is an area that differs from the rest of the lowlands of the Brazilian Cerrado, harboring a significant degree of endemism ( Werneck, 2011; Luebert, 2021).

Figures

FIGURE 2. Pepumiri brasiliensis (Beier, 1962) n. comb. Male holotype. A. Habitus in lateral and B. Dorsal views respectively. C. Terminalia in lateral and D. Ventral view. “© by Natural History Museum of Los Angeles County, U.S.A / G.A. Kung; published with permission.”