Liparura chongqingensis, Ye & Kamimura & Li & Liu, 2023

Ye, Xiaohan, Kamimura, Yoshitaka, Li, Wenliang & Liu, Xingyue, 2023, A new earwig species of the genus Liparura Burr, 1907 (Dermaptera: Forficulidae from China, Zootaxa 5257 (1), pp. 178-186 : 179-184

publication ID	https://doi.org/ 10.11646/zootaxa.5257.1.14
publication LSID	lsid:zoobank.org:pub:717B9D60-86EC-487D-939E-48D49ABF381A
DOI	https://doi.org/10.5281/zenodo.7768217
persistent identifier	https://treatment.plazi.org/id/6A4C87E9-FF8D-FF93-5EB4-F9459C83F80C
treatment provided by	Plazi
scientific name	Liparura chongqingensis
status	sp. nov.

Treatment

Liparura chongqingensis sp. nov.

( Figs 1–7 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 )

Diagnosis. Tegmina laterally with a distinct ridge, posterior margin obliquely truncate; legs generally relatively short compared with congeners; ultimate tergite immaculate, smooth, without protrusions; pygidium small, rounded; male forceps basally approached to each other, and bearing two inner teeth; basalmost tooth directed dorsad; distal 2/3 distinctly arched, terminally acutely tapering and bearing a subdistal tooth.

Description. Male. Body length 14–15 mm from anterior margin of labrum to posterior margin of ultimate tergite; forceps length 9 mm. Coloration generally reddish brown, but abdomen darker, antennae and forceps slightly paler, legs yellowish.

Head large, frons bulged, surface rough and densely wrinkled, transverse median sutures visible but not conspicuous, posterolateral angles rounded, posterior margin concaved. Eyes dark, small but prominent, shorter than length of head posteriad eyes. Antenna 12-segmented, scape (1st antennomere) long, longer than distance between antennal bases; pedicel (2nd antennomere) short; 1st flagellomere (3rd antennomere) twice as long as pedicel; 2nd flagellomere (4th antennomere) slightly shorter than 1st flagellomere; remaining flagellomeres gradually prolonged.

Pronotum trifle wider than long, anterior angle not prominent, posterior margin slightly convex, median longitudinal furrow present, with a small pit on each side. Tegmina longer than pronotum; lateral margin with a distinct ridge ( Fig. 1 View FIGURE 1 : lr), slightly rounded at shoulders; partial region of elytra densely rugose, but without larger points; posterior margin obliquely truncate. Hindwings absent. Mesosternum ( Fig. 1 View FIGURE 1 : me) quadrate, nearly as wide as long. Legs relatively shorter than many congeners; posteriorly stretched hind leg reach to base of forceps.

Abdominal tergites with weak punctures; lateral glands ( Fig. 1 View FIGURE 1 : lg) on tergites 3-4 well marked, with that on tergite 4 much larger. Ultimate tergite ( Figs 1 View FIGURE 1 : ut, 2) narrowed posteriad, posteromedially with a small pit. Penultimate sternite normal, with arched posterior margin. Lateral plates large, well protruded beneath the penultimate sternite. Pygidium ( Fig. 1 View FIGURE 1 : py) small, rounded.

Forceps ( Figs 2 View FIGURE 2 , 6H View FIGURE 6 ) basally approached to each other, and each bearing two inner teeth; basalmost tooth directed dorsad; distal 2/3 distinctly arched as a semicircular curve, terminally acutely tapering and bearing a subdistal tooth.

Genitalia ( Fig. 3 View FIGURE 3 ): Paramere ( Fig. 3 View FIGURE 3 : pa) short, penis lobe ( Fig. 3 View FIGURE 3 : pl) wide, which is narrowed distad, shorter than paramere. Virga ( Fig. 3 View FIGURE 3 : vi) within genital lobe comparatively elongate, vesicle of virga ( Fig. 3 View FIGURE 3 : vv) sclerotized and curved.

Female. Body length 13 mm; forceps length 5 mm. Similar to male, but darker; penultimate sternite normal, rounded posteriorly; pygidium smaller; forceps straight and simple.

Type material. Holotype male: CHINA, Chongqing City, Yintiaoling National Nature Reserve , 31°24′1.3353″N, 109°51′51.8995″E, 1637 m, 24.IX.2022, Xulong Chen ( CAU) GoogleMaps . Paratypes: 1 male and 1 female, Yintiaoling National Nature Reserve , 31°31′29.51″N, 109°49′30.86″E, 1261 m, 10.IV.2022, Qianle Lu ( CAU) GoogleMaps ; 1 female, Yintiaoling National Nature Reserve , 31°24′49.56″N, 109°55′41.48″E, 2000 m, 19.VIII.2022, Quanyu Ji ( CAU) GoogleMaps .

Etymology. The new species is named after Chongqing where its type locality is located.

Distribution. China (Chongqing).

Remarks. The new species is assigned to Liparura based on the scape longer than distance between antennal bases, the tegmina with a sharp ridge along the costal margin and obliquely truncate on posterior margins, the absence of hindwings, the penis lobe and paramere short, and the virga elongate with sclerotized curvature basally. The new species can be readily distinguished from most other Liparura species except L. cornuta by the male forceps basally close to each other and distally incurved. The new species differs from L. cornuta by the ultimate tergite smooth without lateral protrusions, and the different shape of male forceps.