1♂ lectotype of Liliocerisunicolor (NHML, photo, antennae, sternites middle and hind legs missing), Type / Nepal / Hardwicke, Bequest / unicolor Hope / Lectotype, Liliocerisunicolor (Hope) des. A. Konstantinov & A. Tishechkin 2010 / Loan BMNH August 2010 # 2010-471/ BMNH(E)1343990; 1 syntype of Liliocerisseminigra (NHML, photo), Rangoon, Brimania, Fea. VI. 1886/ in copula / Jacoby Coll., 1909–28a. / BMNH(E), 1343036.

5 specimens. Thailand: 1 specimen of Liliocerisunicolor (NHML, photo): Siam/ Baly coll./ Criocerisbadia Lac. Siam “illegible”/ Liliocerisunicolor Hope, det. A. Konstantinov and Tishechkin 2010/ Loan BMNH August 2010 # 2010-471 A. Konstantinov/ BMNH (E)1344002; 1♀, locality is illegible / Criocerisseminigra Jac. var. (handwriting seems Jacoby’s), (IZCAS); Yunnan: 1♀, Longchuan / 1150 m, 1979.VII.16 / Liliocerisseminigra Jacoby, det. Peiyu Yu, (IZCAS); 1♀, Yunnan, Yingjiang, Nongzhang, Jiemao, Xianrendong, 24.52567°N, 97.79818°E / 837 m, 2020.5.27, Hongbin Liang and Yuan Xu coll. (IZCAS); 1♂, Longchuan, Jinghan, Longbazhai, S223 road/ 24.27601°N, 97.85190°E, 902 m, 2020.5.26, Hongbin Liang and Yuan Xu coll. (IZCAS).

Antennae ~ 1/3 as long as body, antennomeres V–XI quadrate. Pronotum without anterior and posterior transverse impression, pronotal disc with one or two rows of punctures in middle. Elytral punctures large, not diminishing posteriorly, intervals slightly convex on apical 1/4; epipleura raised, with row of fine punctures.

BL = 8.0 mm, BW = 3.8 mm. Body brownish red.

Head (Figs 13–16). Vertex with shallow groove in middle, sparsely punctate and pubescent in lateral area; frontoclypeal area triangular, disc with sparse punctures and pubescence; labrum transverse, disc with sparse long pubescence; antennae nearly 1/3 length of body, antennomeres I–IV nearly globular, antennomere II shortest, antennomeres V–X strongly widened, 2 times as wide as long.

Pronotum (Figs 13–16). Anterior angle protruding, posterior angle not protruding; sides constricted in middle; anterior and posterior transverse impression absent; middle of disc with one or two rows of fine punctures. Scutellum triangular and pubescent.

Elytra (Figs 13–16). Humeri protruding, humeral groove distinct, basal impression indistinct; striae with large punctures, punctures not diminishing posteriorly, intervals slightly convex on apical 1/4; epipleura raised, with row of fine punctures.

Mesosternum pubescent; apical portion of mesosternal process widened and flat, obliquely pointed, not horizontally connected with metasternum. Metasternum with long strip of pubescence along outer side, extending from anterior to posterior margin. Metepisternum densely pubescent.

Abdominal sternites. Lateral transverse impressions indistinct on sternites I–V, lateral sides of sternites I–V with dense pubescence, only with sparse pubescence in middle.

Legs. Femora with dense pubescence on dorsal surface, with sparse pubescence on ventral surface, middle area widened.

Male genitalia (Fig. 26A–D). Apical foramen occupying 1/5 length of median lobe (Fig. 26A); apex hooked (Fig. 26B); tegmen Y-shaped, basal piece of tegmen triangle and broad, lateral lobes slightly sclerotized and combined with second connecting membrane; internal sac with distinct dorsal, median and ventral sclerites, posterior part of dorsal sclerite in dorsal view widen and anterior part of dorsal sclerite distinctly extended, ventral sclerite short and flat, median sclerite distinct (Fig. 26C, D).

Female reproductive organs (Fig. 35A–C). Tergites VIII and IX, sternites VIII and IX sclerotized, posterior areas of tergite VIII and sternite VIII with pubescence and apodemes, spiculum gastrale Y-shaped and long; ovipositor with dense pubescence, distal part of ovipositor cylindrical, short and with protuberance; spermatheca convoluted.

(Fig. 37). China (Yunnan); Nepal, Myanmar.

We collected two adults of L.unicolor on Dioscorea sp. (Dioscoreaceae) in the villages of Jiemao and Longbazhai of Yunnan Province, but feeding was not observed, so their host plant needs confirmation. Jiemao and Longbazhai are located in a subtropical area, at elevations of 800–900 m. These two places have a mild climate and abundant rainfall. The habitat in Jiemao is a large secondary forest, composed of tall trees, woody vines, shrubs and weeds. The habitat in Longbazhai is a very small secondary forest of several thousand square meters, surrounded by crop fields.

We examined the lectotype and a non-type specimen of L.unicolor present at NHML. The specimens in IZCAS from Yunnan are not significantly different from the lectotype. The punctures on pronotum are variable: the lectotype has two rows of punctures in the middle of the pronotum, the non-type specimen in NHML and the specimen in IZCAS have only one row of punctures in the middle of the pronotum. The male genitalia of our specimen from Yunnan (Fig. 26C, D) are identical to those of the lectotype in NHML (Tishechkin et al. 2011: 80, fig. 30).

We also examined a syntype of L.seminigra in NHML, and no significant morphological difference was found from the lectotype of L.unicolor, except for the bi-coloration on the elytra of L.seminigra. When Jacoby (1889: 153) described L.seminigra, he noticed a variant: “Var. Elytra entirely fulvous”. In four Chinese specimens in IZCAS, the elytrae are all brownish-red in two specimens of L.unicolor; but the apical 2/3 of each elytron is black, 1/3 of base is brownish-red in one specimen of L.seminigra, and completely brownish-red in another specimen. The female reproductive organs of these two species were dissected and compared, and no significant differences were found. Therefore, we conclude that L.unicolor and L.seminigra are conspecific, and elytral bi-coloration in L.seminigra is simply a variation. In addition, antennomeres V–X in this species are flat, strongly transverse, and the outer distal angle of antennomeres V–VII is protruding. These characteristics are unique among Lilioceris species.