Schizodactylus jimo He, 2021

He, Zhu-Qing & Liu, Yi-Jiao, 2021, A new species of Dune Cricket from China (Orthoptera: Ensifera Schizodactylidae), Zootaxa 4999 (4), pp. 356-362 : 357-360

publication ID	https://doi.org/ 10.11646/zootaxa.4999.4.5
publication LSID	lsid:zoobank.org:pub:83833B36-6866-42A1-A926-E3EE9975F110
DOI	https://doi.org/10.5281/zenodo.5119271
persistent identifier	https://treatment.plazi.org/id/03F28922-ED39-FFDC-FF1D-43D14F619F07
treatment provided by	Plazi
scientific name	Schizodactylus jimo He
status	sp. nov.

Treatment

Schizodactylus jimo He View in CoL sp. nov.

( Figs. 2 View FIGURE 2 , 3 View FIGURE 3 , 4 View FIGURE 4 , 5 View FIGURE 5 )

Holotype: male, CHINA, Yunnan, Baoshan, Near the Salween River , 15-v-2021, coll. Wang Jun.

Paratypes: 1 female, same data as holotype; 4 nymphs (ultimate instar), same data as holotype, but collected on 7-iv-2021 .

COI gene sequences: MZ 360015 View Materials & MZ 360016 View Materials from two nymph paratypes .

(depository: East China Normal University, China)

Description. Male ( Fig. 2A, B View FIGURE 2 ). Similar to S. salweenensis . Head: ovoid, eyes large and vertically elongate ( Fig. 3A View FIGURE 3 ), fastigium verticis split with two small lateral ocelli ( Fig. 3B View FIGURE 3 ), median ocellus round, larger than lateral ocelli, mandible long with pointed and curved apex, maxillary palpi with 3rd–5th segments long and 5th one with pubescent apex ( Fig. 3C View FIGURE 3 ). Pronotum: transverse without lateral carina, anterior margin almost straight, posterior margin sinuated, anterior and posterior margin higher than pronotum disc from lateral view, transverse sulcus very close to anterior margin, forewings and hindwings well developed, apical area rolled (left forewing and left hindwing nested with each other, same as right fore- and hindwing, left wings not rolled with right wings). Legs: fore femora with 4-5 spines on inner ventral margin only, fore tibiae with 4 long inner ventral spurs and 4 short ventral spurs (gradually shortened from basal to apical area as in Fig. 3D, E View FIGURE 3 ), 2 apical spurs on both sides with inner ones longer than outer ones, mid femora with 8–10 spines on outer ventral margin only, mid tibiae with 4 long outer ventral spurs and 4 short inner ventral spines, 4 long inner dorsal spurs and one short outer dorsal spur near apical spurs ( Fig. 3F, G View FIGURE 3 ), hind femora with many denticles on both ventral margins, hind tibiae with dorsal margin finely serrate, 3 outer dorsal spurs and 4 inner dorsal spurs ( Fig. 3H View FIGURE 3 ), 3 apical spurs at both side, inner spurs long with the first and second spurs lanceolate, outer spurs short with the first spurs lanceolate ( Fig. 3I View FIGURE 3 ), ventro-apical margin of hind tibiae with 4 short spines near apical spurs, one long spine at internal angle ( Fig. 3J View FIGURE 3 ) and one small spine at external angle. Tarsi with 4 segments, the first tarsi as long as the total length of second to fourth segments, a pair of plantulae on second and third segments, the plantulae of second wider, but as long as that of the third segment, first segment of hind tarsus with a pair of large triangular plate, a pair of long claws without denticles ( Fig. 3I View FIGURE 3 ). Epiproct in hexagon shape, medial area concaved and furrowed in midline ( Fig. 4A View FIGURE 4 ), no obvious lateral expansion, paraprocts with a narrow projection terminating into an acute tooth curved under epiproct ( Fig. 4C View FIGURE 4 ), subgenital plate nearly triangular with a pair of rounded and pubescent lobes at apex ( Fig. 4B View FIGURE 4 ). Cerci long with rounded at apex, unsegmented and almost straight, medial area narrower than apical and basal area ( Fig. 3K View FIGURE 3 ).

Female. Similar to male. Tenth abdominal tergite transverse, furrowed in midline, fused with epiproct ( Fig. 5A View FIGURE 5 ), epiproct elongated, visible from posterior view ( Fig. 5B View FIGURE 5 ). Paraprocts large, triangular with subacute apex ( Fig. 5C View FIGURE 5 ). Subgenital plate pubescent ( Fig. 5C View FIGURE 5 ). Ovipositor tiny, but protruding from the subgenital plate ( Fig. 5C, D View FIGURE 5 ). Cerci shorter than male’s, apex narrow and compressed ( Fig. 5E View FIGURE 5 ).

Nymph. Ultimate instar ( Fig. 2C View FIGURE 2 ). Forewing pad as long as hindwing pad, hindwing veins curved at base, cross veins indistinct. Ovipositor similar as adult. Male nymph cerci long with expanded apical areas ( Fig. 2E View FIGURE 2 ), female nymph cerci cone shape, shorter than male’s ( Fig. 2F View FIGURE 2 ).

Coloration. Generally whitish brown ( Fig. 2A, B View FIGURE 2 ). Compound eyes black, vertex with longitudinal black bands, pronotum disc with black adornment, lateral lobes black in posterior area. Dorsal field of wing brown with yellow venation, lateral field yellow, irregular black spots on dorsal side of femora, brown on the dorsal side of tibiae, tarsi and cerci yellow.

Measurement (mm). Body ♂ 18.10 ♀ 17.28, pronotum length ♂ 3.40 ♀ 3.52, pronotum width ♂ 8.40 ♀ 9.21, hind femur ♂ 17.31 ♀ 17.69, hind tibia ♂ 12.33 ♀ 12.03, ovipositor 0.48, cercus ♂ 7.60 ♀ 6.49.

Distribution. China (Yunnan).

Biology. The new species inhabits sand areas near river. When one individual was illuminated by the flashlight, it spread its wings and flew into the river (at least over 5 meters away), and escaped quickly by swimming (body floating on the surface and kicking the water with its hind feet).

Etymology. The specific epithet jimo is for the Chinese phonetic alphabet Ṙ寞. It means loneliness in English. It emphasizes that new species is separated by geographic barrier from related species.