Lilioceris dentifemoralis Long, 1988

Xu, Yuan, Qiao, Gexia & Liang, Hongbin, 2024, A review of the semipunctata species group within the genus Lilioceris Reitter, 1913 (Coleoptera, Chrysomelidae), ZooKeys 1195, pp. 337-381 : 337

publication ID	https://dx.doi.org/10.3897/zookeys.1195.114392
publication LSID	lsid:zoobank.org:pub:8D1BC867-5D90-48FE-8B0B-FD1CC9ACF53D
persistent identifier	https://treatment.plazi.org/id/9540D7E6-561D-5039-87DA-425ABA9D8B70
treatment provided by	ZooKeys by Pensoft
scientific name	Lilioceris dentifemoralis Long, 1988
status

Treatment

Figs 7 View Figures 7–10 , 8 View Figures 7–10 , 28A-D View Figures 27–31 , 38A-C View Figures 37–46 , 47A-D View Figures 47–50 , 57A-C View Figures 57–66 , 68 View Figure 68

Lilioceris dentifemoralis Long, 1988: 231 (China: Hainan).

Type material examined.

Holotype of Lilioceris dentifemoralis (MBSU, photo), Hainan, Jianfengling, Tianchi, 1981.7.6, Junxiong Zhang coll. / holotype, Lilioceris dentifemoralis Long ♂, Jianguo Long det. / 603 / En-207215 SYS; allotype of Lilioceris dentifemoralis (MBSU, photo), Hainan, Jianfengling, 1964.V.3-5, Hui Ren coll. / Allotype, Lilioceris dentifemoralis Long ♀, Jianguo Long det. / En-207214 SYS.

Other material examined.

Total 6 specimens. China: 1♀, Hainan, Jianfengling , 1981.8.13 / Maobin Gu collector / Lilioceris dentifemoralis det. Liang H.B. , 2020; 1♀, Hainan, Jianfengling , 1964.V.10 / Tailu Chen collector/ Lilioceris dentifemoralis det. Peiyu Yu / Lilioceris dentifemoralis , compared with type, det. Liang H.B., 2004.3; Vietnam: 1♀, Tonkin, Cho Ganh , L Duport / Lilioceris dentifemoralis , det. Liang H.B. ; 1♀ 2♂, Tonkin.

Diagnosis.

Anterior angles of pronotum slightly protruding, pronotal disc with two or three irregular rows fine punctures. Humeral groove of elytra distinct, punctures of elytra diminishing posteriorly, absent on apical 1/4. Femora of mid- and hind legs with tooth. Lateral metasternum with a wide strip of pubescence.

Redescription.

BL = 7.0-8.0 mm, BW = 3.5-4.0 mm. Body brownish red.

Head (Figs 7 View Figures 7–10 , 38A View Figures 37–46 ). Vertex flat, with a shallow groove in the middle, sparse punctate and pubescent laterally; frontoclypeal area triangular, lateral disc with sparse punctures and setae; labrum transverse, with sparse setae; antennae nearly 1/2 of body length, antennomeres 1-4 nearly globular, antennomere 2 shortest, antennomeres 5-10 nearly 1.5 × as long as wide, antennomere 11 slender.

Pronotum (Figs 7 View Figures 7–10 , 38B View Figures 37–46 ). Anterior angles slightly protruding, posterior angles not protruding; sides constricted in the middle; disc slightly raised; middle of disc with two or three irregular rows fine punctures.

Elytra (Figs 7 View Figures 7–10 , 28B View Figures 27–31 ). Humeri protruding, humeral groove and basal impression distinct; strial punctures large in the base, diminishing posteriorly, absent on apical 1/4; intervals smooth; epipleura raised, with a sparse row of fine punctures.

Mesosternum pubescent. Lateral metasternum with an arcuate strip of pubescence, extending from anterior margin to lateroposterior corner. Metepisternum densely pubescent (Fig. 38C View Figures 37–46 ).

Abdominal sternite (Fig. 28A View Figures 27–31 ). Lateral transverse impressions big and distinct on sternites 1-3, other areas of sternites 1-3 and all of sternites 4 and 5 densely pubescent.

Leg (Fig. 28C View Figures 27–31 ). Femora with dense pubescence on the dorsal surface, nearly smooth on the ventral surface, femora of hind legs with a distinct tooth, and middle legs with a weak tooth.

Male genitalia (Fig. 47A-D View Figures 47–50 ). Ostium occupying 1/5 length of median lobe (Fig. 47A View Figures 47–50 ); apex round (Fig. 47B View Figures 47–50 ); tegmen Y-shaped, basal piece of tegmen triangular and narrow, lateral lobes slightly sclerotized and combined with second connecting membrane; internal sac membranous, with distinct dorsal, median, and ventral sclerites, posterior part of dorsal sclerite in dorsal view slightly widen, ventral sclerite short and flat, median sclerite distinct (Fig. 47C, D View Figures 47–50 ).

Female reproductive organs (Fig. 57A-C View Figures 57–66 ). Tergites 8 and 9, sternites 8 and 9 sclerotized, posterior areas of tergite 8, sternite 8, and apodemes with pubescence, spiculum gastrale Y-shaped and long; ovipositor with dense pubescence, distal part of ovipositor cylindrical, short, and with a protuberance; spermatheca simple and hooked.

Distribution

(Fig. 68 View Figure 68 ). China (Hainan); Vietnam.

Host plant and habitat.

Host plant is unknown. We visited Jianfengling of Hainan where all Chinese specimens were collected, located in a subtropical area. The habitat is mixed primeval forest, orchards, and farmland with high temperatures, plentiful precipitation, and plenty of sunlight. The type locality, Tianchi, refers to a lake area surrounded by shrubs and tall trees.

Remarks.

Lilioceris dentifemoralis can be distinguished from other species in this group by the femora of mid- and hind legs with a tooth (Fig. 32C View Figures 32–36 ). This species seems to be very rare: we tried several times to collect this species in Hainan but failed.