Review of the genus Siemssenius Weise, 1922 (Coleoptera: Chrysomelidae: Galerucinae) from Taiwan, with descriptions of five new species Author Lee, Chi-Feng text Zootaxa 2016 4158 3 367 384 journal article 10.11646/zootaxa.4158.3.4 12a16235-46e5-476e-85e2-068df3c490a9 1175-5326 258327 09EB32FE-9637-479F-8644-972A86B64C8D Siemssenius tsoui Lee , sp. nov. ( Figs 10 A–10F) Type locality. New Taipei city , Hsinhsien (信賢), 24°50’02”N , 121°31’32”E , 200 m . Type material (n= 9). Holotype ♂ ( TARI ): Taipei : Hsinhsien (信賢), 7.V.2011 , leg. M.- H. Tsou . Paratypes: 2♂♂, 2♀♀ (TARI), same as holotype; 1♀ ( TARI ), Erhzuping (二子坪), 29.IV.2016 , leg. C.- F. Lee ; 2♂♂ , 1♀ ( TARI ), Tsaikungkengshan (菜公坑山), 2.V.2012 , leg. S.- F. Yu Description. Aedeagus concave and narrow, sides basally and gradually widened; apico-lateral angles angulate, extremely wide in lateral view, bases of apico-lateral angles sharply arcuate; middle of apical margin with a long, slender tube-like process, extremely wide in lateral view, apex slightly medially depressed; dorsal process subapically slightly swollen in dorsal and lateral views, apex pointed, subapically angulate in lateral view ( Figs 10 A–10B). Ventrite V ( Fig. 10 C) not modified in female, apical margin narrowly rounded, sometimes medially depressed. Gonocoxae reduced. Ventrite VIII ( Fig. 10 D) heart-shaped, with extremely short spiculum and dense elongate setae along apical margins of triangulate processes. Tergite VIII ( Fig. 10 E) with apex pointed and dense setae on disc. Receptacle of spermatheca ( Fig. 10 F) weakly swollen, barely separated from pump, pump much narrower and longer, sharply curved; proximal spermathecal duct long and narrow. Diagnosis. Siemssenius tsoui sp. nov. is characterized its sharply arcuate bases of the apical-lateral angles of the aedeagus ( Figs 10 A–10B). Host plants. Lonicera hypoglauca Miq., 1866 (Caprifoliaceae) ( Figs 3 D, 3E); Hydrangea angustipetala Hayata, 1911 (Saxifragaceae) ( Fig. 3 F). Etymology. This new species is named after Mr. Mei-Hua Tsou, a member of the TCRT and first to collect this new species. Distribution. Lowlands in northern Taiwan ( Taipei county and city) ( Fig. 4 ).