Xizicus (Paraxizicus) anisyutkini 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 : 13-14

Xizicus (Paraxizicus) anisyutkini Gorochov , sp. n.

https://zoobank.org/NomenclaturalActs/ 10A22FF0-1C58-4F0E-B9F5-EDEF1A70177B

Figs 40–45

MATERIAL. Holotype – ♂, Vietnam: Cao Bang Prov., Phia Oac – Phia Den National

Park, 22º37ʹ41.8ʹʹN, 105º54ʹ41.5ʹʹE, ~ 900 m, 3–15. VI.2019, L. Anisyutkin ( ZIN).

DESCRIPTION. Male (holotype). Coloration yellowish with following marks: head with dorsal pattern similar to that of X. ( Axizicus ?) incisus laticercus subsp. n., and with each antenna light brown but having brown pedicel and base of flagellum as well as medial half of scape; pronotum with a pair of dark brown longitudinal stripes on disc and light brown area between them; tegmina with greenish tinge as well as light brown both moderately short stripe along each anal edge and several small spots on other areas (except for almost transparent stridulatory membranes); legs with brown ventral spines of fore and middle tibiae, dark brown dots on both apical lobules of hind femur, greyish brown distal part of hind tibia and light brown area on third segment of all tarsi; region of base of posteromedian process of last tergite and distal half of distolateral lobe of cercus darkened ( Figs 40–45 ). Upper tubercle of head rostrum narrowly conical, with rounded apex and thin median groove dorsally ( Fig. 40 );

shape of pronotum as in Figs 40, 41 ; spine of fore coxa about 0.3 mm in length; fore and middle tibiae with four pairs of rather long ventral spines on each of them, one clearly shorter ventral spine on outer side of subapical part of fore tibia and a pair of similar subapical spines on middle tibia; tegmina typical of this genus, i.e. long (reaching distal parts of hind tibiae) and with normally developed stridulatory apparatus; exposed parts of hind wings

(visible behind tegminal apices) about 1.4 mm in length. Last tergite deeply and rather narrowly notched; its posteromedian process with base located in middle of this notch, with proximal half narrow and having distinct median groove posterodorsally, and with a pair of clearly inflated and rather large distal lobules having apical parts somewhat oblique truncated and even slightly concave ventrally ( Figs 42, 44, 45 ); epiproct very small, lobular and almost completely covered with this process; each paraproct roundly triangular but with oblique ventrolateral projection having distinct lamellar hook apically ( Figs 43–45 ); cercus moderately short and somewhat depressed dorsoventrally in proximal half, with distomedial lobe lamellar and rather wide as well as having posterior part rounded and anterior part clearly curved downwards, with distolateral lobe longer and much thinner but with lamellar lancet-

like widening in its distal half, and with rather small but somewhat inflated medial tubercle in cercal proximal portion ( Figs 42–45 ); genital plate narrow but not very long, with deep ventromedian groove and a pair of acute spines at apex as well as hook-like dorsal process

(apex of this process with group of distinct setae forming almost hooked structure) and distinct styles located near basal part of this plate (this basal part with a pair of rather small rounded notches visible laterally and outlined by small but distinct folds; Figs 43–45 );

genitalia membranous.

Female unknown.

MEASUREMENTS. Length (in mm). Body 9; body with wings 23; pronotum 3.8; tegmina

18.5; hind femora 11.

COMPARISON. The new species is most similar to X. (P.) anisocercus Liu, 2004 in the posteromedian process of the male last tergite having a pair of inflated lobes in its distal half,

but it is distinguished from the latter species by these inflated lobes clearly larger, and the male genital plate somewhat wider and with longer and thinner apical spines as well as with the styles located in the basal (but not in middle) part of this plate. From X. (P.) furcistylus

Feng, Chang et Shi, 2016 and X. (P.) biprocerus (Shi et Zheng, 1996) , the new species differs in the posteromedian process of the male last tergite clearly less deeply divided into a pair of more inflated lobes; additionally it differs from X. furcistylus in more hooked projections of the male paraprocts and distinctly longer apical spines of the male genital plate, and from

X. biprocerus in a clearly longer posteromedian process of the male last tergite and the presence of a pair of acute spines at the male genital plate apex (vs. this apex with four apical lobules: medial ones rather long and obtuse, lateral ones shorter and acute-angled).

ETYMOLOGY. This species is named after its collector.

REMARKS. It is necessary to mention that this subgenus is more or less similar to

Furcixizicus and Xizicus s. str. and may be confused with these subgenera; for example:

Xizicus fallax Wang, Jing, Liu et Li, 2014 was included in the subgenus Paraxizicus (Wang et al., 2014; Feng et al., 2016) but later transferred to Furcixizicus in doubt (Gorochov,

2019). However, Paraxizicus is distinguished from them by the process (processes) of the male last tergite larger and usually inflated, or not hooked, and by the male genital plate more specialized.

Figures

Figs 30–45. Xizicus spp.: 30–35 – X. (Eoxizicus) reductus sp. n.; 36–39 – X. (Axizicus?)