Lilioceris impressa (Fabricius, 1787)

Tishechkin, Alexey K., Konstantinov, Alexander S., Bista, Sanjay, Pemberton, Robert W. & Center, Ted D., 2011, Review of the continental Oriental species of Lilioceris Reitter (Coleoptera, Chrysomelidae, Criocerinae) closely related to Lilioceris impressa (F.), ZooKeys 103, pp. 63-83 : 69-71

Lilioceris impressa (Fabricius, 1787) Figs 37101626

Crioceris impressa Fabricius, 1787: 88 (Type locality: “Siam”. Lectotype designated here, BMNH).

Crioceris subcostata Pic, 1921a:2 (Type locality: China, “Shin-guey-fu”. Lectotype designated here, MNHN). New synonym

Crioceris ruficornis Pic, 1921b: 136 (Type locality: China, "Pe Yen Tsing (Yunnan)". Lectotype designated here, MNHN). Gressitt and Kimoto 1961:59 (synonymy).

Crioceris laticornis Gressit 1942:300 (Type locality: Hainan, Kwantung. Type depository: unknown). New synonym

Lilioceris inflaticornis Gressit and Kimoto, 1961:50 (Type locality: "SE China [Kwantung, Fukien]. Type depository: CAS). New synonym

Lilioceris maai Gressit and Kimoto, 1961:53 (Type locality: "Ta-chu-lan, near Shaowu, NW Fukien". Type depositary: BBM). New synonym

Diagnosis.

Occipital area with shallow furrow, at least with deep small fovea at midpoint. Pronotum posteriorly with single weak, regular, transverse impression. Pronotal disc with scattered larger punctures, mid-line alignment of punctures usually still evident, at least on anterior half. Lateral side of pronotum around constriction with large punctures. Outer metasternal disc only with oblique setose patch. Anterior setose fringe not expanded in antero-lateral corner. At least half of metepisternal disc covered with setae. Apical elytral punctures strong. Apical elytral intervals distinctly raised. Internal sac of aedeagus with posterior part of dorsal sclerite in dorsal view elongate, narrowing posteriorly, directed slightly laterally. Posterior part of dorsal sclerite in lateral view widening and round at apex, directed forward.

Comments.

All five species put here into synonymy with Lilioceris impressa correspond to it well. There is slight variability in the size of the outer metasternal setose patch, and color varies from almost completely reddish-brown to typical black and yellow, but pronotal and elytral punctuation and sculpture as well as aedeagus characters are consistent between specimens. We did not observe any meaningful variability in the shape of the expanded distal antennomeres, which was used by Gressit and Kimoto in describing Lilioceris inflaticornis and Lilioceris laticornis . However, even these authors had some doubts about the use of these characters, even in the reference to the type series ( Gressit and Kimoto 1961).

We did not thoroughly search for Lilioceris impressa -group specimens originating from outside of the area of interest, in particular from the islands and archipelagoes of the Oriental Region. However, all the island specimens in the USNM identified as Lilioceris impressa do not belong to this species and all lack the outer metasternal setose patch. So, the prevailing concept of Lilioceris impressa , being widely distributed across almost the entire Oriental Region, seems to be at least questionable. All the USNM Lilioceris impressa -group specimens originating from Sri Lanka, Andaman Islands, Greater and Lesser Sunda Islands, and Philippines were not identified as any of the species dealt with in this study and might indeed represent undescribed species closely related to other Lilioceris impressa -group species.

Type material examined.

Lilioceris impressa: Lectotype, male. Labels. 1) Cr. impressa Fabr. Mant. Ind. n. 24; 2) Sir Joseph Banks Collection 1743-1820 ex. Linn. Soc. 1863 BM(NH) 1863-46; 3) ‘Type’ Crioceris impressa Fab. 1787; 4) Lectotype Crioceris impressa Fabricius des Konstantinov and Tishechkin 2010 (BMNH).

Lilioceris inflaticornis : Paratype, male, Fujian: Gang-keu, 26.VII.1936, J. L. Gressitt, 1 male (BBM).

Lilioceris laticornis : Paratype, Hainan: nr. Nodoa, Tan-hsien (Distr.), 17-22.VIII.1928, Lingnan Univ. 5th Hainan Island Expedition, 1 female (USNM).

Lilioceris maai : Holotype male: 1) Fukien S. China, Shaowun Tachulan 1000 m. T. Maa; 2) May 7, 1942; 3) Holotype Lilioceris maai J. L. Gressitt + Kim; 4) Lilioceris maai Gres. Kim. J. L. Gressitt det.; 5) Lilioceris sp. 1 maai; 6) Lilioceris impressa (F.) det. A. Konstantinov 2010. (BBM). Paratypes CHINA. Fujian: Shaowu, Tachulan, 26.IV.1942, T.C. Maa, 2 females (BBM), same locality and collector, but 1000m, 7.6.1943 female (BBM); same locality and collector, but 17.V.1942, 1 female (USNM); same locality, but 17.V.1945, K. C. Lin, 1 female (BBM).

Lilioceris ruficornis , Lectotype, female. Labels. 1)"Pe yen Tsing Yunnan; 2) type; 3) TYPE; 4) ruficornis n sp; 5) Lectotype Crioceris ruficollis Pic des Konstantinov and Tishechkin 2010 (MNHN).

Lilioceris subcostata , Lectotype, male. Labels. 1) Shin-Guy-Foo CHINE; 2) octobre; 3) n sp; 4) type; 5) TYPE; 6) subcostata n sp; 7) Lectotype Crioceris subcostata Pic des Konstantinov and Tishechkin 2010 (MNHN).

Material examined.

CHINA. Hainan: Dwa Bi, 20.VII. 1935, L. Gressitt, identified as Lilioceris laticornis by S. Kimoto, 1959, 1 female (BBM); same locality, but 22.VII.1935 (1 BBM); Pan Heang 8.VI.1935, L. Gressitt (1 BBM). Sichuan: between Yachow and Kiating, 19-22.VI.1929, 1200-1500 feet, D. C. Graham, 1 specimen (USNM). Yunnan: Pe Yen Tsing, 1 specimen (USNM); Tche-Ping-Tcheou, 8 specimens (USNM); no precise locality, 1 specimen (USNM). INDIA. Haryana: Kalka, 1 specimen (USNM). LAOS.Sayaboury Prov. Sayaboury 30.V.1065, (1 BBM); Khammouane Prov. Phon Tiou, 6.VII.1965 (3 BBM). MALAYSIA. Malacca, 1 specimen (USNM). THAILAND. Trong, lower Siam, W. L. Abbott, 2 specimens (USNM). VIETNAM. Hanoi, 24.XII.1961, at lights, O. N. Kabakov, 1 specimen (USNM); Trang Bom, 30 mi NW of Saigon, 18.VII.1932, M. Poilane, 1 specimen (USNM); same locality and collector, but 26.VII.1932, 1 specimen (USNM); Nord Annam, Than-Hoa, V.1942, R. Dessom, 1 specimen (USNM); mountains 50 km NE Thai Nguen, 300 m, 13.IX.1962, O. N. Kabakov, 1 specimen (USNM).