Subtilodecma unilobata Gorochov, 2022

Gorochov, A. V., 2022, Taxonomy of the katydids (Orthoptera: Tettigoniidae) from East Asia and adjacent islands. Communication 15, Far Eastern Entomologist 459, pp. 1-26 : 4

Subtilodecma unilobata Gorochov , sp. n.

https://zoobank.org/NomenclaturalActs/ 08D22B40-253C-4BC4-9868-2CD39F6CEFD2

Figs 1–7

MATERIAL. Holotype – ♂, Malaysia: Sabah State, Manukan I. very near Borneo I. (~5

km NNW of Kota-Kinabalu City), ~sea level, secondary forest, on leaf of small tree at night,

24–25.IV.2013, A. Gorochov, M. Berezin, V . Gorochova, E. Tkatsheva ( ZIN). Paratypes : 1

♂, 3 ♀, same data as for holotype ( ZIN) ; 1 ♂, 3 ♀, same state, Borneo I., Southern part of

Kinabalu National Park, 1500–2000 m, primary forest, on leaves of bushes at night, 26.IV–

1. V.2013, A. Gorochov, M. Berezin, V. Gorochova, E. Tkatsheva ( ZIN).

DESCRIPTION. Male (holotype). Body uniformly light greenish with poorly distinct and sparse darkish dots on antennal flagellum ( Figs 1, 2 ). Rostrum with upper tubercle almost finger-like ( Fig. 2 ); pronotum with hind lobe practically equal in length to more anterior pronotal part ( Figs 1, 2 ); spine of fore coxa about 0.1 mm in length; tegmina reaching middle part of sixth abdominal tergite, with exposed part of stridulatory apparatus almost equal to half of more distal tegminal part ( Fig. 2 ); cercus almost angularly curved, with distal portion dorsoventrally flattened and lobe-like as well as directed partly medially (i.e. this portion unilobate and directed more medially than proximal portion; Figs 3, 5 ); genital plate with proximal portion almost 2.5 times as wide as most widened part of distal portion, with narrow (low) lateral sides of this distal portion directed mainly upwards but upwards/laterally in one place, and with apical part much narrower than above-mentioned distal portion ( Figs 4, 5 ).

Variations. Two other males with spine of fore coxa about 0.1 or 0.15 mm in length, with tegmina reaching middle or posterior parts of sixth abdominal tergite, with exposed part of tegminal stridulatory apparatus slightly longer than half of more distal tegminal part, and with genital plate curved upwards more strongly or less strongly than in holotype.

Female. Coloration and structure of body similar to those of males, but dots on antennal flagellum somewhat more distinct, pronotum with hind lobe slightly shorter (insignificantly shorter than more anterior pronotal part), tegmina without stridulatory apparatus and reaching middle or posterior parts of fifth abdominal tergite, and genital plate short (clearly transverse)

and almost trapezoidal as well as with widely truncate (barely concave or barely sinuate)

posterior edge ( Fig. 6 ); ovipositor as in Fig. 7 .

MEASUREMENTS. Length (in mm). Body: ♂ 8–8.5, ♀ 6.5–8.5; pronotum: ♂ 3.2–3.4,

♀ 2.7–2.9; visible parts of tegmina: ♂ 3.7–4, ♀ 2.7–3.2; hind femora: ♂ 8.5–9, ♀ 9–9.7;

ovipositor 5.5–6.

ETYMOLOGY. The new species name is the Latin word “unilobata” (unilobate, with one lobe) due to the shape of the male cercal apex.

Figures

Figs 1–13. Subtilodecma gen. n.: 1–7 – S. unilobata sp. n.; 8–13 – S. bilobata sp. n. Male