Lilioceris sieversi (Heyden, 1887a)

Xu, Yuan & Liang, Hongbin, 2022, A review of the sinica species group within the genus Lilioceris (Coleoptera, Chrysomelidae, Criocerinae), ZooKeys 1119, pp. 153-179 : 153

publication ID	https://dx.doi.org/10.3897/zookeys.1119.87082
publication LSID	lsid:zoobank.org:pub:381A108D-0C00-42D7-A7FD-2EBE3C0CCB75
persistent identifier	https://treatment.plazi.org/id/352EAE51-5E2C-511B-9A97-7D28BCEF08F0
treatment provided by	ZooKeys by Pensoft
scientific name	Lilioceris sieversi (Heyden, 1887a)
status

Treatment

Figs 3 View Figures 1–3 , 14 View Figures 12–17 , 20 View Figures 18–23 , 26 View Figures 24–29 , 32 View Figures 30–41 , 42 View Figure 42 , 46 View Figures 45, 46

Lilioceris sieversi Heyden, 1887: 271 (China, Mun. Pecking). ( Crioceris ). Medvedev 1958: 108 ( Lilioceris ).

Lilioceris ruficollis Baly, 1865: 155 (N. China, syntype, gender?) ( Crioceris ). [homonym of Crioceris ruficollis Fabricius, 1787].

Crioceris ruficollis White, 1981: 41 [replacement name of Crioceris ruficollis Baly, 1865].

Type material examined.

1 syntype of Crioceris ruficollis (NHML, photo), Crioceris ruficollis Baly, N China / SYN-TYPE / BMNH (E) 1343762.

Other material examined.

Total 64 specimens. China: Heilongjiang : 2♂ 3♀, Harbin, Ertsentientze, Manchuria , 1941.VI.15 ; Jilin: 1♂ 1♀, Ma-an Shan / Lilioceris Lilioceris ruficollis Baly , Peiyu Yu Det.; Beijing : 1♀, Badaling , 700 m / 1962.VI.30, Chunguang Wang coll. / Lilioceris Lilioceris ruficollis ( Baly ), Peiyu Yu Det .; 1♀ 1♂, Badaling , 570 m / 1962.VIII.23, Shuyong Wang coll. ; 2♀ 1♂, Badaling , 570 m / 1962.VIII.23, Shengqiao Jiang coll. ; 1♀ 1♂, Badaling , 570 m / 1962.IX.6, Shuyong Wang coll. ; 1♀, Shangfang Shan , 400 m / 1961.VII.18, Xuezhong Zhang coll. ; 2♀, Sanpu / 1974.VII.18, Shengqiao Jiang coll. ; 3♂, Sanpu / 1973.VIII.23, Shengqiao Jiang coll. ; 1♂, Sanpu / 1980.VI.12, Jiang coll. / Lilioceris Lilioceris ruficollis (Baly); 1♂, Sanpu / 1973.VIII.23, Shengqiao Jiang coll. / Dioscorea nipponica Makino; 1♂, Badaling , 700 m / 1962.VI.29, Chunguang Wang coll. ; 1♂, Shangfang Shan , 400 m / 1961.VII.14, Shuyong Wang coll. ; 1♂, Mentougou, Yanchi , 301 m, 40.00237°N, 115.80577°E, 2021.VII.8, Yuan Xu, Yuyao Qin & Hongbin Liang coll. GoogleMaps ; 1♂, Changping, Baiyanggou , 301 m, 40.23828°N, 115.96238°E, 2021.VII.8, Yuan Xu, Yuyao Qin & Hongbin Liang coll. GoogleMaps ; 1♀, Shangfang Shan, Shengshuiyu, Yunxia Shanzhuang , 566 m, 39.65727°N, 115.78220°E, 2021.07.16, Yuan Xu, Yuyao Qin & Hongbin Liang coll. GoogleMaps ; 1♀ 1♂, Mentougou, Yanchi , 301 m, 40.00237°N, 115.80577°E, 2021.08.26, Hongbin Liang coll. GoogleMaps ; 3♀ 1♂, Mentougou, Zhaitang, Malan forest farm, 2021.VI.14, Meiying Lin coll. ; 3♀ 3♂, Mentougou, Zhaitang, Cenfu , 2021.06.12, Meiying Lin coll. ; 1♀, Mentougou, Wangping, Guacaodi Scenic Area , 2021.VIII.12, Yong Wang coll. ; Hebei: 1♀, Chahar / Chahar, Yangkiaping / 1937.VII.6, O. Piel coll. / Lilioceris Lilioceris ruficollis ( Baly ), Peiyu Yu det. ; 2♀, Chahar / Chahar Yangkiaping / 1937.VII.3, O. Piel coll. ; 1♀, Chahar / Chahar, Yangkiaping / 1937.VII.5, O. Piel coll. ; 1♂, Chahar / Chahar, Yangkiaping / 1937.VII.6, O. Piel coll. ; 1♂, Xinglong, Taqian , 700 m / 1963.VII.3, Shengqiao Jiang coll. ; Hubei: 2♂, Shennongjia, Zongluo , 900 m, 1981.VI.18, Yinheng Han coll. ; Shaanxi: 1♀, 1936.6.9 ; Zhejiang: 2♂, Tianmu Shan , 1931.5.30 ; Guizhou: 1♂, 1910; Jiangxi : 1♂, Tonggu , 500 m / 1973.IV.24 / Lilioceris Lilioceris ruficollis ( Baly ), Peiyu Yu det.; Fujian : 1♀, Wuyi Shan , 1982.6.26, Fan Jiang coll. / Lilioceris Lilioceris ruficollis ( Baly ), Peiyu Yu det. ; 1♀, Fuzhou / 1955.IV.21 ; 1♀, Fuzhou / 1955.IV.23 ; 1♀, Fujian; 1♀, Fuzhou , 1955.VIII.10 ; 1♀ 1♂, Fu-an, Shizitou , 1946.V.9 ; 1♀, Fu-an, Baisha , 1946.V.3-25 ; 1♂, Fuding , 1946.V ; 1♂, Fuzhou / 1955.IV.23.

Diagnosis.

Pronotum brownish red, elytra black or dark blue, femora black; pronotum disc with fine punctures; elytral punctures large on basal half, diminishing posteriorly; metasternite almost glabrous; abdominal sternites have a row pubescence and the rest of area nearly smooth, transverse impressions present on sternites 2-5, area outside the impression with sparse pubescence.

Redescription.

BL = 6.5-8.5 mm, BW = 3.5-4.5 mm. Front part of head, antennae, legs, ventral surface black; occiput, pronotum brownish red, elytra dark blue or black; scutellum black slightly with brownish red.

Head (Fig. 3 View Figures 1–3 ). HL/HW = 1.3-1.5; vertex without or with an indistinct groove in the middle, finely punctate and setose laterally; frontoclypeal area triangular, disc with dense punctures and setae; labrum transverse, with sparse setae; antennomeres 5-10 slightly longer than wide (Fig. 32 View Figures 30–41 ).

Pronotum (Fig. 14A View Figures 12–17 ). PW / HW = 1.0-1.1, PL / PW = 1.2-1.3; anterior and posterior angle not protruding; sides constricted in the middle; middle of disc with fine and scattered punctures; anterior and posterior transverse impression indistinct, basal transverse groove shallow.

Elytra (Fig. 14D View Figures 12–17 ). EL/EW = 1.5-1.8; sutural angle rounded; humeri protruding, humeral groove distinct, basal transverse impression indistinct; scutellary striole composed of 5-8 punctures; strial punctures large at base, diminishing posteriorly; intervals flat; epipleura raised, with row of fine punctures.

Mesosternite pubescent. metasternite almost glabrous, only with sparse pubescence (Fig. 14B View Figures 12–17 ); metepisternum densely pubescent.

Abdominal sternites with a distinct row of pubescence, sparse in the middle; lateral transverse impressions present on sternites 2-5, area outside the impression sparsely pubescent (Fig. 14C View Figures 12–17 ).

Legs slender; tibiae with dense punctures and pubescence; femora with dense pubescence on the dorsal surface, with sparse pubescence on the ventral surface.

Male genitalia (Fig. 20A-D View Figures 18–23 ). Median foramen occupying 1/4 length of median lobe (Fig. 20A View Figures 18–23 ); apex triangular (Fig. 20B View Figures 18–23 ); basal piece of tegmen triangular, lateral lobes weakly sclerotized; posterior part of dorsal sclerite in lateral view curved, directed ventrally, narrowed at apex in dorsal view (Fig. 20C, D View Figures 18–23 ).

Female reproductive organs (Fig. 26A-C View Figures 24–29 ). Spiculum gastrale short, Y-shaped, distal part widened; ovipositor with dense setae, distal part of ovipositor cylindrical, short, with small protuberance; spermatheca slightly convoluted.

Distribution.

China (Heilongjiang, Jilin, Beijing, Hebei, Shaanxi, Hubei, Zhejiang, Guizhou, Jiangxi, Fujian); Korea ( Park et al. 2012; Cho and An 2020).

Host plant and habitat.

This species feeds on Dioscorea nipponica and D. polystachya in Beijing according to our observations; in addition, D. septemioba , D. batatas , and D. japonica are also its hosts ( Park et al. 2012).

One collecting locality of it in Beijing (Fig. 46 View Figures 45, 46 ) is situated at the north temperate zone. The climate is a temperate monsoon climate, with hot and rainy summers, and cold and dry winters with an average temperature below 0 °C. Affected by the climate, temperate deciduous broad-leaved forests grow here. The host plant Dioscorea polystachya shares a habitat with other plants such as Koelreuteria paniculata ( Sapindaceae ), Menispermum dauricum ( Menispermaceae ), Vitex negundo var. heterophylla ( Lamiaceae ), Populus sp. ( Salicaceae ), Ulmus pumila ( Ulmaceae ), Humulus scandens ( Cannabaceae ), Persicaria sp. ( Polygonaceae ) and others.

Remarks.

This species is unique in Lilioceris sinica group for its dark blue or black elytra, aedeagus with an acute apex, and the dorsal sclerites curved in lateral view. The color of ventral side and the femora of this species is variable: specimens from northern China are completely black, while those from southern China are black with brownish red.