Liaromorpha bispinosa Gorochov, 2020

Gorochov, A. V., 2020, Taxonomy of the katydids (Orthoptera: Tettigoniidae) from East Asia and adjacent islands. Communication 13, Far Eastern Entomologist 400, pp. 1-36 : 3-5

Liaromorpha bispinosa Gorochov , sp. n.

http://zoobank.org/NomenclaturalActs/ 0067651B-633C-48F6-9161-0E49A5448AB5

Figs 1–3 , 14–20

MATERIAL. Holotype – ♂, Vietnam: Gia Lai Prov., 40 km N of K’Bang Town, Kon

Chu Rang Nature Reserve , 14º30ʹ19ʹʹ N, 108º32ʹ28ʹʹ E, 1020 m, 24.V–2.VI 2016, A. Abramov

( ZIN). Paratypes: same data as for holotype, 2♂, 3♀ ( ZIN); same country, Kon Tum Prov. ,

Kon Plong Distr., commune Kon Plinh, Xa Hien Vill., 14º36.190ʹ N, 108º28.285ʹ E, 950 m,

15–23. VI 2014 , 1♂, L. Ioganssen, N. Orlov ( ZIN).

DESCRIPTION. Male (holotype). General appearance ( Figs 1, 2 ) similar to that of L.

buonluoiensis Gorochov, 1994 . Body rather large for this genus. Coloration brownish yellow with orange tinge and following marks: eyes and thin ring around each antennal cavity brown; anterior surface of epicranium with large black triangular area between base of rostral tubercle and clypeal suture; median ocellus in upper part of this area small and whitish;

mandibles black except for upper half of lateral surfaces which dark brown to brown with yellow basal portion; pronotum with two short brown lines (along anterior and posterior edges); tegmina with light brown distal part of dorsal field; legs with brown to dark brown tibial spines, a few small brown spots on basal parts of fore and middle tibiae, and dark brown dorsal surface of hind tibia. Rostral tubercle elongate and conical, barely longer than scape, with very small and rounded dorsal denticle near its base; pronotum with hind lobe long (approximately as in L. buonluoiensis ), and with anterior half of its ventral edge having small (but distinct) ventral triangular denticle; tegmina reaching base of second abdominal tergite, distinctly protruding beyond posterior edge of pronotum, with widely rounded distal parts; last abdominal tergite with a pair of rather large (but not long) posterodorsal lobes which more or less triangular but having apical parts rounded and curved downwards

(posteromedian notch between these lobes widely rounded, moderately deep and with narrow longitudinal membranous area between median part of this notch and middle of last tergite;

Fig. 18); epiproct small (almost transverse) and more or less triangular; paraprocts also small and lobe-like but with one distinct apical tubercle on each paraproct; cerci deeply bifurcated,

with dorsal branch somewhat thickened (widened) in proximal half and having moderately long apical spine barely curved downwards and medially, and with very long and thin ventral branch which spine-like but curved medially (this curvature arcuate and rather strong; Figs

14–16); genital plate also similar to that of L. buonluoiensis but with slightly narrower and more deeply notched apical part (Figs 15, 16); genitalia with median sclerite distinguished from that of this species only by its narrower middle part (Fig. 17).

Variations. Other males slightly varied in coloration: from yellow with brownish median stripe on abdominal dorsum to light brown with almost brown distal part of dorsal tegminal field and most part of abdomen. Sometimes antennal flagellum with sparse and very small darkish spots.

Female. Coloration and structure of body almost as in males including presence or absence of both darkish median stripe on abdominal dorsum and spots on antennal flagellum, but:

hind lobe of pronotum distinctly shorter; tegmina scale-like (slightly or barely protruding beyond posterior pronotal edge) and with poorly distinct traces of longitudinal venation (Fig.

natalicium Gor. ; 6, 7 – L. nitida Ingr. ; 8–10 – Liara (Liara) bifurcata sp. n.; 11–13 – L. (L.)

inaculeata sp. n. Head in front and slightly from below (1, 4, 6, 8, 11); fore half of body from side, male (2, 5, 7, 9, 12) and female (3, 10, 13).

3); last tergite with smaller posterodorsal lobes; paraprocts almost lacking apical tubercle;

cerci much smaller and simple (elongate, conical, with thin apical part and without branches).

Genital plate transverse, with rounded posteromedian part having distinct (but not large)

median notch, and with a pair of elongate posterolateral lobules (Fig. 19); ovipositor as in

Fig. 20.

MEASUREMENTS. Length (in mm). Body: ♂ 32–44, ♀ 31–38; pronotum: ♂ 11.5–12,

♀ 9.5–10; tegmina, visible parts: ♂ 3.8–4.2, ♀ 0.4–1.1; hind femora: ♂ 18–19.5, ♀ 19–20;

ovipositor 11.5–12.

COMPARISON. The new species is most similar and related to L. buonluoiensis described from a locality situated not far from the type locality of L. bispinosa . It differs from L. buonluoiensis in the male tegmina more protruding beyond pronotum, male last tergite posteriorly bilobate (vs. this tergite not bilobate but with unpaired posteromedian sclerotized area narrowing to almost truncate apex and curved downwards; Fig. 26), male cercus with distinctly longer and partly spine-like dorsal branch, male genitalia with median sclerite narrower in middle part, and female genital plate with narrower posteromedian notch as well as with rounded (not almost angular) projections around this notch and clearly longer posterolateral lobules (compare Figs 19 and 27). From L. natalicium Gorochov, 2007 ( Cambodia) , the new species differs in the male last tergite having distinctly larger posterior lobes and wider notch between them (vs. these lobes much smaller and with distinctly narrower notch between them; Fig. 28), and in the male cercus with longer and more or less spine-like dorsal branch;

and from all the other congeners, in the presence of ventral denticle on pronotal lateral lobes.

ETYMOLOGY. The new species name is the Latin word “bispinosa” (with two spines),

because L. bispinosa has two distinct spines in the male cercus.

Figures

Figs 1–13. Liaromorpha and Liara s. l.: 1–3 – Liaromorpha bispinosa sp. n.; 4, 5 – L.