Xizicus (Eoxizicus) bothrocercus 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 : 9-10

Xizicus (Eoxizicus) bothrocercus Gorochov , sp. n.

https://zoobank.org/NomenclaturalActs/ 7FD54CCF-EA6B-4E92-B7AB-21FA2EE24509

Figs 24–29

MATERIAL. Holotype – ♂, China: Hunan Prov., “Jiucai Ling”, 25º32ʹN, 111º22ʹE,

~ 1300 m, VII.2006, V . Sinyaev, S. Sinyaeva ( ZIN). Paratypes: 2 ♂, 1 ♀ , same data as for holotype ( ZIN) .

DESCRIPTION. Male (holotype). General appearance and body structure similar to those of X. (E.) robustocercus sp. n. but with following characteristic features: body coloration uniformly light greenish (i.e. without darkened stripes on pronotum; Fig. 24 ) with brown to dark brown eyes, light brown to brown areas on third segment of all tarsi and almost dark brown distal halves of spines and spurs on dorsal part of hind tibia; spine of fore coxa about 0.4 mm in length; tegmina slightly shorter than in this species, reaching distal thirds of hind tibiae; hind wings barely protruding beyond tegminal apices (their exposed distal parts ~ 0.6 mm in length); last tergite with a pair of slightly longer and almost lamellar

(laterally compressed) lobules moved somewhat anteriorly and dorsally from almost straight posterior edge of this tergite ( Fig. 25, 27 ); each cercus dorsally thinner and more elongate than in X. (E.) robustocercus sp. n., with rather long and dorsoventrally depressed but moderately thin distal lobule curved somewhat medially, with moderately thickened proximal half having elongate medial concavity which outlined by distinct keels ( Figs 25–27 );

genital plate elongately oval and moderately high (cup-like) but with small and dorsoventrally lamellar apical lobule located in upper part of this plate (ventral edge of genital plate in profile strongly S-shaped in region of base of this lobule); styles of genital plate small and situated around base of its apical lobule ( Figs 26, 27 ).

Variations. In one of other males, hind wings practically not protruding beyond tegminal apices, and lobules of last tergite located slightly more near each other than in holotype. Third male with left tegmen having distinct light brown stripe along anal edge after stridulatory apparatus.

Female. General appearance similar to that of holotype but with following differences:

pronotum with slight traces of a pair of darkish stripes on disc (these stripes poorly visible only on anterior and posterior thirds of disc); spine of fore coxa approximately 0.3 mm in length; tegmina and abdominal apex more similar to those of female of X. (E.) robustocercus

sp. n., but length of exposed distal parts of hind wings almost 1.9 mm, and genital plate transversally trapezoidal (not elongate) and without distinct posteromedian notch as well as with almost flat ventral surface and strong and slightly sinuate lateral keels between ventral and lateral surfaces of this plate ( Fig. 28 ); ovipositor as in Fig. 29 .

MEASUREMENTS. Length (in mm). Body: ♂ 12.5–13, ♀ 15.5; body with wings: ♂

21–23, ♀ 28; pronotum: ♂ 3.9–4.1, ♀ 4.4; tegmina: ♂ 16.5–18, ♀ 22.5; hind femora: ♂ 10–

10.8, ♀ 11; ovipositor 10.

COMPARISON. The new species is most similar to Xizicus (Eoxizicus) cheni (BeyBienko, 1955) , comb. n. from China in the shape of the male cerci (including the presence of a characteristic medial concavity in the proximal half of each cercus which is outlined by distinct keels) but differs from it in the somewhat longer posterior lobules of the male last tergite, in the presence of two short obtuse-angled projections (instead one almost acuteangled projection) on the dorsomedial edge near the middle of the male cercus, and in the distal part of this cercus more curved medially. The male cerci of the new species are also more or less similar to X. (E.) dao , X. (E.) duplum and X. (E.) orlovi from Vietnam as well as to X. (E.) tuberculatus and X. (E.) hainani from China. However, X. (E.) bothrocercus sp. n. is distinguished from all them by the presence of the above-mentioned concavity in the proximal half of the male cercus. Additionally, this new species differs from them in the following characters: from X. dao and X. duplum , in the widened proximal part of the male cercus shorter, and in the male genital plate with its apex rounded and lobule-like (but not truncate or notched); from X. orlovi , in the lobules of the male last tergite larger, and in the male cercus with its distal part clearly flattened (not almost cylindrical) and less curved medially; from X. tuberculatus , in the male cercus less curved upwards and with a much higher

(wider in profile) proximal half, as well as in the apex of the male genital plate without any notch; and from X. hainani in the lobules of the male last tergite distinctly larger, and in the male cercus clearly higher in its proximal half. From some species with unknown male, the new species differs in a characteristic shape of the female genital plate: this plate is transverse,

trapezoidal, with a flat venter and strong lateral keels between this venter and the lateral surfaces of this plate.

ETYMOLOGY. This species name originates from the Latinized Greek prefix “bothro-“

(with concavity) and the Latinized Greek morphological term “cercus” due to the presence of a characteristic medial concavity on the proximal half of the male cercus.

Figures

Figs 14–29. Xizicus spp.: 14–20 – X. (Eoxizicus) robustocercus sp. n.; 21 – X. (E.)?hue Gor.; 22, 23 – X. (E.) orlovi Gor.; 24–29 – X. (E.) bothrocercus sp. n. Anterior half of male