The genus Clerotalia Jacoby of Taiwan (Coleoptera: Chrysomelidae: Galerucinae) Lee, Chi-Feng Zootaxa 2018 4420 3 357 378 Lee, 2018 Lee 2018 [151,339,439,465] Insecta Chrysomelidae Clerotilia GBIF Animalia Coleoptera 1 358 Arthropoda species cheni sp. nov.      Types(n= 19). Holotype ♂( TARI):  Ilan: Tsuifenghu( ẸḌḀ),  3.VII.2010, leg. M.- H. Tsou.  Paratypes. 4♀♀( TARI), same data as holotype;  1♂( TARI), same locality,  30.V.2009, leg. H.- J. Chen; 1♀ (TARI), Suchi ( ƋŢ), 1.VIII.2009, leg. M.-H. Tsou;  1♂, 3♀♀( TARI), Suyuanyakou(  ÙAEḎD),  25.VI.2017, leg. W.- B. Yeh; 1♀ (TARI), Tataung ( ƛặ), 11.VIII.2014, leg. J.-C. Chen;   Taichung: 5♂♂, 2♀♀( TARI), Shengkuangshan(  ṞKNJ),  23.VII.2016, leg. J.- C. Chen.  Description.Length 5.1–6.4 mm, width 1.9–2.4 mm. General color ( Figs 2A–2C) yellowish brown; head dark brown, including antennae, but occiput metallic green; tibiae, tarsi, and apices of femora darker; elytra, pronotum, and hypomeron metallic green; metasternum sometimes with metallic green reflection. Occiput with reticulate microsculpture. Antennae filiform in males ( Fig. 3A), antennomeres V-VII moderately broader, length ratios of antennomeres I–XI 1.0: 0.4: 0.7: 0.6: 0.7: 0.7: 0.8: 0.7: 0.6: 0.6: 0.7, length to width ratios of antennomeres I–XI 3.8: 2.7: 3.4: 2.9: 3.0: 3.2: 3.9: 3.8: 3.7: 3.7: 4.1; slender in females ( Fig. 3B), length ratios of antennomeres I–XI 1.0: 0.4: 0.6: 0.6: 0.6: 0.6: 0.6: 0.5: 0.5: 0.5: 0.6, length to width ratios of antennomeres I–XI 4.6: 2.5: 3.5: 3.6: 3.9: 3.7: 4.0: 3.4: 3.5: 3.2: 3.7. Pronotum transverse, 1.4x wider than long, disc convex without reticulate microsculpture, and with sparse, fine and coarse punctures; lateral margin narrower near base; apical margin slightly concave; basal margin subtruncate. Elytra elongate and parallel-sided, 2.0x longer than wide; disc with reticulate microsculpture and dense, coarse punctures. Tarsomeres I of front and middle legs swollen in males. Penis ( Figs 3C–3D) extremely slender, 11.3x longer than wide; narrower apically, apex rounded; tectum elongate and well sclerotized, apical margin truncate; slightly curved at basal 1/ 3 inlateral view, ventral surface with minute spines along lateral margins of subapical surface; ventral surface well sclerotized; endophallic sclerite complex composed of three sclerites, apical sclerite small and apically tapering; medial sclerite curved and subapically expanded; basal sclerite longest, apex trilobed, median lob apically tapering. Gonocoxae ( Fig. 3E) narrowly connected at middle; apices truncate, each gonocoxa with eight setae along outer margin from apex to apical 1/4. Ventrite VIII ( Fig. 3F) transverse and weakly sclerotized; with dense, short setae along apical surface; spiculum extremely slender. Receptacle of spermatheca ( Fig. 3G) a little broader than pump; pump shallowly inserted into receptacle, separated into two parts, anterior part with transverse depressions, posterior part narrower apically, strongly curved; proximal spermathecal duct shallowly inserted into receptacle, elongate and broad.   Diagnosis.Adults of  Clerotilia cheni  sp. nov.are similar to those of  C. jungchani  sp. nov.with yellowish brown body, metallic green elytra and occiput, but the former species possesses a metallic green pronotum, black tibiae, tarsi, and apices of femora (yellow pronoutm and legs in  C. jungchani); strongly widened antennae (antennomeres III-VI less than 3.5 times longer than wide) and straight tibiae of middle legs in males (weakly widened antennae (antennomeres III-VI more than 4.0 times longer than wide and curved tibiae of middle legs in males of  C. jungchani). The aedeagi of males of  C. cheniand  C. jungchaniare characterized by the presence of tiny spines on the lateral or ventral discs. In males of  C. cheni  sp. nov., aedeagi possess sparse tiny spines on ventral disc and small apical sclerite and widened apex of middle sclerite of endophallic sclerite complex, apex directed anteriorly whereas those of  C. jungchani  sp. nov.possess sparse, tiny spines on the lateral disc, tapering apex of the middle sclerite and absence of an apical sclerite of the endophallic sclerite complex, which is recurved ventrally at apex.   Etymology.This new species is dedicated to Hou-Jay Chen, a member of TCRT and the first to collect this new species.  Food plant. Rhamnaceae:  Rhamnus nakaharae(Hayata) Hayata( Fig. 1A).   Distribution.Northeast Taiwan(Ilan and eastern TaichungCounties) ( Fig. 4). 1915495812 [151,1244,549,575] 2010-07-03 TARI Ilan & Tsuifenghu & H. Tsou Types 1 358 1 1 holotype 1915495820 2010-07-03 TARI Ilan & Tsuifenghu & H. Tsou Types 1 358 4 4 paratype 1915495803 [511,1116,589,614] 2009-05-30 TARI J. Chen Types 1 358 1 1 paratype 1915495797 [501,1386,629,654] 2017-06-25 TARI Suyuanyakou & B. Yeh United Arab Emirates UAE 1 358 4 3 1 paratype 1915495795 2016-07-23 TARI, RKNJ Shengkuangshan & C. Chen. United Arab Emirates Taichung 1 358 7 2 5 Taichung paratype