Siemssenius liui Lee

Lee, Chi-Feng, 2016, Review of the genus Siemssenius Weise, 1922 (Coleoptera: Chrysomelidae: Galerucinae) from Taiwan, with descriptions of five new species, Zootaxa 4158 (3), pp. 367-384 : 376-378

Siemssenius liui Lee , sp. nov.

( Figs 8 A–8H)

Pseudoliroetis rufipennis Chûjô, 1962: 178 (part).

Type locality. Ilan county , Taipingshan (太平山), 24°29’41”N, 121°32’01”E, 2000 m.

Type material (n=37). Holotype ♂ ( TARI): Ilan: Taipingshan (太平山), 13.VI.2007, leg. W.- T. Liu . Paratypes: 1♂ (TARI), same as holotype; 1♂, 2♀♀ ( TARI), same locality, 2.VI.2008, leg. H. Lee ; 1♀ ( TARI), same locality, 19.VI.2008, leg. S.- Y. Wu ; 3♂♂ ( TARI), same locality, 21.V.2016, leg. H. Lee ; 1♂, Miharasi (= Chienching, 見晴), 9.V.1942, leg. A. Tanaka (as paratype of Pseudoliroetis rufipennis ); 1♂ (TARI), 曙 (Shu, near Taipingshan), 8.V.1942, leg. A. Mutuura (as paratype of Pseudoliroetis rufipennis ); 1♂, 1♀ ( TARI), same locality, 8.V.1942, leg. A. Tanaka (as paratypes of P. rufipennis ) ; 1♂ (TARI), 白嶺 - 新太平山 (Pailing-Shintainpingshan), 7.V.1942, leg. A. Mutuura (as paratypes of P. rufipennis ); 1♂, 1♀ (TARI), 曙 - 見晴 - 白嶺 (Shu-Chienching- Pailing), 9.V.1942, leg. A. Mutuura (as paratypes of P. rufipennis ); 1♂ ( TARI), Suchilintao (四季林道), 19.V.2010, leg. H.- F. Chen ; 1♀ ( NMNS), Suyuanyakou (思源啞口), 25.VI.2007, leg. P. H. Chan & W. L. Lien ; 2♂♂ ( TARI), same locality, 25.IV.2009, leg. M.- H. Tsou ; 2♀♀ ( TARI), same locality, 28.IV.2009, leg. M.- H. Tsou ; 1♀ ( TARI), same locality, 6.V.2011, leg. S.- F. Yu ; 7♂♂, 1♀ ( NMNS), Tsuifenghu (翠峰湖), 21.VI.1992, leg. C. Y. Li ; 1♂, 1♀ ( TARI), same locality, 30.V.2009, leg. H.- J. Chen ; 1♂ ( TARI), Zhoyuhan (佐宇漢), 29.V.2009, leg. Y.- T. Wang; Hualien : 2♂♂ ( TARI), Kuanyuan (關原), 2.VI.2016, leg. J.- C. Chen ; 2♂♂, 1♀ ( TARI), Pilu (碧綠), 17.V.2009, leg. C.- F. Lee; Taoyuan : 1♂ (TARI), Mr. Rara (= Lalashan, 拉拉山), 27.V.1934, leg. M. Chûjô (as paratypes of P. rufipennis ); 1♀ ( SEHU), same locality, 30.IV.1979, leg. S. Tsuyuki ; 1♀ ( SEHU), same locality, 26.VI.1982, leg. J.- J. Luo.

Description. Aedeagus concave and wide, sides subparallel; apico-lateral angles obtusely angulate, wide in lateral view, bases of apico-lateral angles moderately arcuate; apical margin with a short and narrow median tubelike process, wide in lateral view, apex slightly and medially depressed; dorsal process subapically and strongly swollen in dorsal and lateral views, apex recurved and pointed in lateral view ( Figs 8 A–8B). Ventrite V ( Fig. 8 D) not modified in female, apical margin broadly rounded. Gonocoxae reduced. Ventrite VIII ( Fig. 8 E) heart-shaped, with extremely short spiculum, with dense elongate setae along apical margins of triangulate processes. Tergite VIII ( Fig. 8 G) with apex pointed, with dense setae on disc. Receptacle of spermatheca ( Fig. 8 H) weakly swollen, barely separated from pump, pump much narrower and longer, sharply curved; proximal spermathecal duct long and narrow.

Variation. Females collected from Pilu, east Taiwan, have the sinuate apical margin of abdominal ventrite V ( Fig. 8 C) bearing sparse elongate setae along apical margins of triangulate processes on ventrite VIII ( Fig. 8 F).

Diagnosis. Siemssenius liui sp. nov. is characterized by the extremely short, tube-like median process on the apical margin of the aedeagus ( Figs 8 A–8B).

Remarks. Eight paratypes of Pseudoliroetis rufipennis Chûjô are misidentified and belong to this new species.

Host plant. Lonicera acuminata Wall., 1832 (Caprifoliaceae) .

Etymology. This new species is named after Mr. Wei-Ting Liu, a member of the TCRT and first to collect this new species.

Distribution. Montane areas in north and east Taiwan (Hualien, Ilan, and Taoyuan counties) ( Fig. 4 ).

Figures

FIGURE 4. Distribution map of Taiwanese species of Siemssenius, solid line: 1000 m, broken line: 2000 m. Red spots: S. rufipennis (Chûjô); blue spots: S. tsoui sp. nov; gray spots: S. liui sp. nov.; pink spots: S. yuae sp. nov.; orange spots: S. metallipennis (Chûjô) and S. rufipennis (Chûjô); green spot: S. jungchani sp. nov.; yellow spot: S. cheni sp. nov.

FIGURES 8. Diagnostic characters of Siemssenius liui Lee, sp. nov. 8 A. Penis, lateral view; 8 B. Penis, dorsal view; 8 C. Apical margin of abdominal ventrite V, female, specimen from Pilu; 8 D. Abdominal ventrite V, female, specimen from Taipingshan; 8 E. Abdominal ventrite VIII, female, specimen from Taipingshan; 8 F. Triangulate processes on abdominal ventrite VIII, female, Pilu; 8 G. Abdominal tergite VIII, female; 8 H. Spermatheca.