Xistrella hainanensis Deng, 2019

Xin, Lei & Deng, Weian, 2019, A new species and a new record of Xistrella from China (Orthoptera: Tetrigidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 59 (2), pp. 453-462 : 459

publication ID	https://doi.org/ 10.2478/aemnp-2019-0034
publication LSID	lsid:zoobank.org:pub:59E6F2E8-C5AF-478E-987F-1D4610587CCD
DOI	https://doi.org/10.5281/zenodo.5062832
persistent identifier	https://treatment.plazi.org/id/03C63657-235B-3C1F-FED5-EDE1FC4B713D
treatment provided by	Felipe
scientific name	Xistrella hainanensis Deng
status	sp. nov.

Treatment

Xistrella hainanensis Deng View in CoL , sp. nov.

( Fig. 4 View Fig )

Type material. HOLOTYPE: ♀, P. R. CHINA: HAINAN: Changjiang , 13 November 1964, collected by Ji-Cai LI ( BMSYU) . PARATYPES. P. R. CHINA: HAINAN: 1 ♀, same data, type locality ( BMSYU); 2 ♀♀, Lingshui, 29 December 1963, collected by Ji-Cai LI ( BMSYU).

Description. Female. Medium or small size, slender.

Head slightly exerted above pronotal surface. Fastigium of vertex between eyes 1.8 times width of eye in dorsal view, anterior margin of fastigium truncate, not surpassing anterior margin of eye; MC of vertex visible anteriorly; fossula deep; lateral margins elevated up to level of upper margin of compound eye as horns, scutellum narrower than diameter of antennal groove (AG). In lateral view, frontal costa concave and invisible between eyes, protruded anteriorly and broadly rounded between AG; lateral ocelli located between lowest thirds of inner anterior margins of eyes.Antennae long, filiform, inserted slightly below inferior margin of eye, upper margin of AG at level of lower margin of compound eye; 14-segmented; MAL about 7–8 times longer than MAW. Eyes globose, slightly exerted above pronotal surface.

Pronotum very long (macropronotal state), surpassing abdominal apex and extending up to apex of hind tibia. Pronotum smooth, finely granulated; in dorsal view anterior margin truncate; MC entire; subulate posteriorly; in profile, upper margin of pronotum with two humps: one before shoulders and the other one before hind shoulders, PM and MM1 not connected, then straight; PC slightly constricted backwards, HA arched; interhumeral carinae short and parallel. PML of pronotum with tegminal and ventral sinus, PML of pronotum produced outwards, with truncated apex. Tegmina elongate oval, apex round. Hind wings slightly surpassing apex of PP.

Legs. Fore and middle femora compressed and wide. Upper and lower carinae of fore and middle femora straight; middle femur narrower than tegmina. Hind femur stout, length 3.3 times its width; margins finely serrated, AT and GT in right angle. Outer side of hind tibia with six to seven ST and inner side with four to five ST. 1stTL longer than 3rdTL, three pulvilli of PT1 equal in length, apex obtuse.

Abdomen. Ovipositor narrow and long, length of upper valvulae four times their width, upper and lower valvulae with slender saw-like teeth. SGPL equal to SGPW, middle of posterior margin of subgenital plate triangularly projecting.

Coloration. Body dark brown. Hind wing and hind femur dark brown. Hind tibia dark brown.

Male. Unknown.

Measurements (mm). Length of body: 11.1–11.3; length of pronotum 14.5–14.7; length of hind femur 6.5–6.8.

Differential diagnosis. Xistrella hainanensis can be easily distinguished from other species of the genus by upper margin of pronotum with a hump both anteriad and posteriad of shoulders; PM and MM1 are not connected. The species appears to be related to X. dubia , but is easily distinguished by morphological characters shown in Table 2 View Table 2 .

Etymology. The new species was named after the type locality, Hainan, China; adjective.

Distribution. China (Hainan) ( Fig.5 View Fig ).

Note. Xistrella hainanensis Deng was proposed in DENG’ s (2016) PhD Dissertation, which has not been published according to the criteria of availability (ICZN 1999: Art. 8.1). The name X. hainanensis Deng is made available in this paper.