Xenotermes sp.

(Figs 22–30, 42)

Material examined (1 ex.). ♀, labeled: ‘ China: Yunnan Prov., Lincang City (Oiḿṁ), Yongde County (AEaeǥ), Yalian Township (dzfiø), 24°14′03″N, 99°56′49″E, 2015.VIII.22, 1410 m, Light trap, Wang Ji-Shen leg.’ (LYJC).

Description. Female (Figs 22–23). Body reddish brown, dorsal surface weakly flattened.

Head (Figs 24–26) strongly wider than long, vertex punctured behind compound eyes. Head capsule deeply concave before compound eyes and around base of antennae, and forming raised Y-shaped ridge frontally. Compound eyes longitudinally short, separated dorsally. Clypeus (Fig. 26) relatively large and vertical, unobservable in dorsal view, smooth, and slightly emarginate at apical margin. Labrum (Fig. 26) narrower than clypeus, smooth, nearly rectangular, covered with short bristles on apical portion. Antennae (Fig. 27) short, antennomeres strongly expanded and asymmetrical, with 10 antennomeres. Antennomere I longest, slightly longer than wide; II shortest, wider than long; III‒IX strongly expanded and asymmetrical, with dorsal portion nearly twice as wide as ventral; X markedly narrower than IX, with rounded apex.

Pronotum (Figs 24–25) slightly wider than long, trapezoidal, surface rough and covered with sparse short setae. Lateral margin wavy, widest at base, strongly pointed at hind corners. Pronotum with two pairs of strong ridges; inner ridges straight, equal to approximately 3/4 of pronotal length and not extending to hind border of pronotum; outer ridges discontinuous in middle, extending from hind border of pronotum to nearly anterior border; Elytra elongate, sides subparallel; interval IV shortest, approximately 4/5 of elytral length; III approximately 6/7 of elytral length. Legs simple, tibiae slightly tapering towards apex.

Sternite VIII (Fig. 28) semicircular, deeply split medially at posterior margin with dense long setae. Spiculum (Fig. 28) tortuous in middle. Apex of ovipositor (Figs 29–30) with two long setae.

Measurements. BL 6.67 mm, HL 0.57 mm, HW 0.94 mm, AnL 2.63 mm, PL 1.54 mm, PW 1.78 mm, EL 4.56 mm, EW 2.28 mm. Ratio of AnL for each antennomere from basal to apical: 0.44, 0.20, 0.22, 0.24, 0.24, 0.24, 0.24, 0.24, 0.24, 0.28.

Male. Unknown.

Comparative notes. The specimen in this study resembles Xenotermes feai Wasmann, 1896 from Myanmar and Thailand in the general appearance, but has different shape of the pronotum, especially the strongly pointed hind corners. However, due to the male being unknown, we herein report this female specimen as Xenotermes sp.

Biology. The female specimen was collected by the light trap (Fig. 42). Discovery of its termitophilous habit is highly expected in future works.

Distribution. China: Yunnan (Fig. 46).