Tachycines (Gymnaeta) storozhenkoi Zhu & Shi, 2026, sp. nov.

Tachycines (Gymnaeta) storozhenkoi sp. nov. urn:lsid:zoobank.org:act: 5899B506-B37A-4814-8D64-AFDC274A05AF Figs 1, 2A–B, 3 Diagnosis The habitus of the new species is similar to that of congenerically known species, but the dorsal sclerite and dorso-median lobe shapes of the male genitalia are distinctly different, the basal area of the dorsal sclerite is narrow, the anterior margin slightly concave, the basal third nearly parallel on both sides, then gradually widens, the apical third approximately twice as wide as the basal area, the lateral margin parallel, the posterior margin broad and deeply concave (Fig. 2A). Both sides of the subapical area of the dorso-median lobe have one small lobe (Fig. 2A). Etymology This species is named after Sergey Yurievich Storozhenko, a renowned Russian entomologist who has made profound contributions to the classification of Orthoptera in the world. Material examined Holotype CHINA • ♂; Chongqing, Wuxi, Shuangyang; 31°29′12″ N, 109°49′14″ E; 1022 m a.s.l.; 12 Aug. 2022; Q.D. Zhu leg.; JXAUM. Paratypes CHINA • 1 ♂, 1 ♀; same data as for holotype; JXAUM • 3 ♂♂, 3 ♀♀; Chongqing, Wuxi, Shuangyang; 31°28′29″ N, 109°52′40″ E; 1289 m a.s.l.; 13–14 Aug. 2022; Q.D. Zhu leg.; JXAUM. Other material CHINA • 1 ♂, 1 ♀; Chongqing, Wuxi, Lanying; 31°24′19″ N, 109°53′33″ E; 1816 m a.s.l.; 16 Aug. 2022; Q.D. Zhu leg.; JXAUM • 1 ♂, 1 ♀; Chongqing, Wushan, Zhuxian; 31°16′31″ N, 110°5′40″ E; 1521 m a.s.l.; 5 Aug. 2023; Z.S. Zhang and L.Y. Wang leg.; JXAUM. Description BODY. Medium-sized. HEAD. Fastigium verticis with two conical tubercles, apices obtuse, separated, pointing forwards. Eyes ovoid, protruding forwards; median ocellus oval, located between antennal sockets, lateral ocelli nearly circular, occupying two-thirds of lateral rostral tubercles. Apical segment of maxillary palp obviously longer than subapical one, apex globular. THORAX. Pronotum broad, anterior margin of disc straight, posterior margin arcuate; lateral lobe longer than high, ventral margin arc-shaped. Mesonotum and metanotum short, posterior margin of mesonotum arcuate, posterior margin of metanotum straight. Fore coxa with one small spine; femur unarmed on ventral surface, internal genicular lobe with one small spine, external genicular lobe with one long spine; tibia with one inner spine and two outer spines on ventral surface, apex with one outer spine on dorsal surface and a pair of spines on ventral surface with one small spine in between. Middle femur unarmed on ventral surface, internal and external genicular lobes with one long spine, respectively; tibia with one inner spine and one outer spine on ventral surface, apex with a pair of dorsal spines and a pair of ventral spines with one small spine in between. Hind femur unarmed on ventral surface, internal genicular lobe with one small spine, external genicular lobe unarmed; tibia with 63–65 inner spines and 61–63 outer spines on dorsal surface, subapex with a pair of dorsal spines, apex with a pair of dorsal spines and two pairs of ventral spines, intero-dorsal spine obviously shorter than hind basitarsus; hind basitarsus with one dorsal spine. MALE ABDOMEN. Posterior margins of all abdominal tergites straight. Epiproct semicular, paraproct triangular in lateral view. Cercus long, conical, apex acute. Genitalia with dorsal sclerite, basal area narrow, anterior margin slightly concave, basal third nearly parallel on both sides, then gradually widenening, apical third approximately twice as wide as basal area, lateral margin parallel, posterior margin broad and deeply concave; dorso-median lobe with lateral sclerite, length twice the width, basal third slightly narrow, anterior margin blunt, posterior margin broad and rounded, extended to subapical area of dorso-median lobe; both sides of subapical area of dorso-median lobe with one small lobe, apical area with a pair of lobes, dorso-lateral lobe cylindrical, longer than dorso-median lobe, ventro-lateral lobe shorter than dorso-lateral lobe, ventro-median lobe short. Subgenital plate transverse and broad, in the middle with a conical protuberance, posterior margin straight. FEMALE ABDOMEN. Ovipositor short, slightly curved upwards, dorsal margin smooth, apical areas of ventral margin denticulate. Subgenital plate trapezoid, basal area broad, gradually narrowing to apical area, posterior margin straight. COLORATION. Body light brown, with brown spots. Eyes black, ocelli yellowish-brown. All tibia and femur with ring-like brown stripes, basal half of hind femur with penniform brown stripes. Measurements (mm) Body length: ♂: 19.68–22.76, ♀: 20.44–25.04; length of pronotum: ♂: 6.16–6.84, ♀: 6.66–7.46; length of fore femur: ♂: 13.96–15.26, ♀: 13.72–14.78; length of hind femur: ♂: 26.28–28.24, ♀: 27.34–29.40; length of hind tibia: ♂: 27.54–31.30, ♀: 29.22–31.64; length of hind basitarsus: ♂: 6.08–6.10, ♀: 5.74– 6.30; length of ovipositor: 11.18–11.84. Distribution China (Chongqing).