Dioxeuta yunnanensis, Song, Xiao-Bin & Li, Li-Zhen, 2014

Song, Xiao-Bin & Li, Li-Zhen, 2014, Descriptions of three new species of the Termitophilous tribe Termitopaediini in China (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 424, pp. 91-100 : 94-96

Taxon classification Animalia Coleoptera Staphylinidae

Dioxeuta yunnanensis sp. n. Fig. 3

Type material.

Holotype: China: ♂, labelled 'CHINA: Yunnan, Baoshan City, Mangkuan Town (芒宽乡), Baihualing N. R. (百花岭), 25°17'47"N, 98°48'22"E, alt. 1400 m, 23-IV-2013, Xiao-Bin Song leg. / HOLOTYPE [red], Dioxeuta yunnanensis sp. n., Song & Li det. 2014, SNUC’. Paratypes: China: 1 ♂, 9♀♀, same data as holotype, bearing the following label: 'PARATYPE [yellow], Dioxeuta yunnanensis sp. n., Song & Li det. 2014, SNUC’. (SNUC, KUM).

Comparative notes.

Dioxeuta yunnanensis is most similar to Dioxeuta rara described above, but can be readily separated from it by the different abdominal macrochaetotaxy as well as the shape of aedeagal median lobe and spermatheca.

Description.

Body (Figs 3A, 5B) shining, smooth. Coloration: fore body and legs yellowish-brown; antennae yellowish-brown to brown; abdomen yellowish-brown, with mesal area of tergites brown.

Head (Fig. 3A) subquadrate in form; slightly longer than wide, about 0.86 times as wide as long; sparsely covered with long setae. Pronotum (Fig. 3A) slightly wider than long, about 1.02 times as wide as long; with 7 pairs of macrosetae, with a row of 4 macrosetae along the anterior margin, 6 on disc and 2 each along the lateral margins. Elytra (Fig. 3A) wider than long; disc sparsely covered with macrosetae; hypomera with several short yellow setae along lateral margin. Abdomen slightly physogastric, widest at segments III–V; abdominal tergite VII shaped as in Figs 3B; tergite VIII (Figs 3C, E) with 4-5 macrosetae, posterior margin with a row of 6-8 long yellow setae. Macrochaetotaxy of abdominal tergites II–VIII: 2, 6, 6, 6, 4-6, 0, 4-5; inner paratergites without macrosetae but sparsely covered with yellow setae; macrochaetotaxy of outer paratergites III–VII is variable: 5-8, 4-6, 3-4, 0, 0.

Male. Sternite VIII rounded at apex, shaped as in Fig. 3D; with 4 pairs of macrosetae. Median lobe of aedeagus (Fig. 2D) with apical lobe curved; paramere shaped as in Fig. 2E.

Female. Posterior margin of sternite VIII (Fig. 3 F–G) nearly rounded; with 7-8 macrosetae. Spermatheca shaped as in Fig. 2 F–G.

Measurements.

Male: BL: 2.34-2.46; FBL: 0.95-1.06; HL: 0.35; HW: 0.30; PL: 0.38; PW: 0.38; HW/HL: 0.87; PW/PL: 1.00; HW/PW: 0.79. Female: BL: 2.61-2.72; FBL: 1.02-1.06; HL: 0.35-0.38; HW: 0.32; PL: 0.37-0.40; PW: 0.39-0.41; HW/HL: 0.84-0.87; PW/PL: 1.03-1.04; HW/PW: 0.78-0.82.

Distribution.

Southwest China: Yunnan.

Symbiotic host.

Macrotermes sp.

Etymology.

Named after its type locality of Yunnan Latinized.