Elbenia (Elbenia) eudigitata, Gorochov, 2023

Gorochov, A. V., 2023, Taxonomy of the katydids (Orthoptera: Tettigoniidae) from East Asia and adjacent islands. Communication 16, Far Eastern Entomologist 485, pp. 7-28 : 22-24

Elbenia (Elbenia) eudigitata Gorochov, sp. n.

https://zoobank.org/NomenclaturalActs/ 1077A597-F8C2-46D8-95F0-C1125D164816

Figs 102–104, 121, 122, 139

MATERIAL. Holotype – ♂, Indonesia, Sumatra I., West Sumatra Prov., ~ 20 km E of Sasak Town, equator, 100 m, environs of Harau Valley National Part , primary/secondary forest, at light, 24–26.XI 1999, A. Gorochov ( ZIN).

DESCRIPTION. Male (holotype). Coloration and structure of body very similar to those of E. (E.) paradigitata sp. n. but with following differences: dorsal tegminal fields with dark brown lateral halves of basal areas, similar lateroproximal spot in rest part of each dorsal field fused with previous dark portion, brown to light brown stridulatory vein in left tegmen and brownish grey small area before 2A (this vein yellowish) in both tegmina (Figs 121, 122, 139); apical parts of cerci not curved upwards (Figs 102–104); genital plate with higher apical lateral (lamellar) parts having rounded posterior edges and almost angular dorsal projections, as well as with similar posteromedian notch having non-sinuate edges (Figs 103, 104).

Female unknown.

Length (in mm). Body 21; body with wings 48; pronotum 5.2; tegmina 38; hind femora 21.

COMPARISON. Differences between the new species and E. (E.) paradigitata sp. n. are listed above. From E. (E.) digitata , E. (E.) fusca and E. (E.) fissa , the new species differs in the apical lobes of the male genital plate not subdivided into a pair of medial lobules and a pair of lateral ones, and from all other species of Elbenia s. str., it is distinguished by the same characters as E. (E.) paradigitata sp. n.

Figs 121–138. Elbenia (Elbenia) : 121, 122 – E. (E.) eudigitata sp. n.; 123–132 – E. (E.)?tenera Br. -W. (123–127, Kinabalu Mt; 128–131, Trus Madi Mt); 133 – E. (E.) borneensis Karny ; 134–138 – E. (E.)?borneensis . Left (121) and right (122) dorsal fields of male tegmina from above; male abdominal apex from above (123, 134), from below (124), from side (125, 135), from above and slightly behind (132), and from behind but with genital plate lobes completely visible (126) or partly covered by male last tergite lobes (136); male cercus from above (127, 129, 138); distal half (128) or both distal halves (137) of completely visible lobes of male genital plate from behind; female abdominal apex with ovipositor from side (130); last sternite and genital plate of female from below (131); male last tergite from above/behind (133). [132, after Brunner-Wattenwyl (1898); 133, after Karny (1926a).]

ETYMOLOGY. The new species name consists of the Latinized Greek prefix “eu-” (true) and the species name “digitata ” due to the similarity of the male genital plates.