The genus Cangshanaltica (Coleoptera: Chrysomelidae: Alticinae): overview, new species, and notes on species complexes Author Damaška, Albert František Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic. Author Ruan, Yongying Plant Protection Research Center, Shenzhen Polytechnic, Shenzhen, Guangdong, China. Author Fikáček, Martin 0000-0002-2078-6798 Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan. & Department of Entomology, National Museum, Prague, Czech Republic. https: // orcid. org / 0000 - 0002 - 2078 - 6798 text Zootaxa 2022 2022-12-07 5219 1 49 64 journal article 203547 10.11646/zootaxa.5219.1.2 3371ba4a-c391-4b73-9abd-3ecddf2cc320 1175-5326 7408144 738A7391-DAC4-49E8-98D9-0706582493F6 Key to described species of Cangshanaltica Konstantinov, Chamorro, Prathapan, Ge & Yang 1 Pronotum and elytra differently colored or elytra with a color pattern (Figs 4,6,7).................................. 2 - Pronotum and elytra unicolorous......................................................................... 5 2 Elytra black or dark blackish-brown with yellowish spots in basal and humeral parts and a yellowish brown stripe along epipleura; elytral apices yellowish brown (Median lobe of aedeagus widened towards apex; Fig. 6 )... C. marginata sp. nov. - Elytra with a dark spot or spots.......................................................................... 3 3 Each elytron brownish ochraceous with a dark central spot (Antennomeres VII—XI distinctly elongated; Fig. 4 )........................................................................................... C. guanxiensis sp. nov. - Elytra yellow with multiple dark spots.................................................................... 4 4 Elytra with 6 dark spots.................................................. C. ogatai Takemoto & Suenaga, 2021 - Elytra with 4 dark spots ( Fig. 7 )......................... A species complex related to C. ogatai distributed in Taiwan . 5 Dorsum without, or with a feeble metallic luster............................................................ 6 - Dorsum with a strong blue or green metallic luster......................................................... 11 6 Length greater than 1.5 mm in males, 1.7 mm in females..................................................... 7 - Body minute, length less than or equal to 1.5 mm in males, 1.7 mm in females.................................... 9 7 Dorsum brown....................................................................................... 8 - Dorsum black with feeble greenish metallic luster (median lobe of aedeagus gradually narrowing towards apex; Fig. 2 )...................................................... C. nigra Konstantinov, Chamorro, Prathapan, Ge & Yang, 2013 8 Dorsum chestnut brown; antennae flattened,; median lobe of aedeagus elongate and slender with sharp parallel margins on dorsal side, pointed; antennomere XI distinctly paler than X ( Fig. 5 )................... Cangshanaltica javana sp. nov. - Dorsum dark brown; median lobe of aedeagus shorter, parallel-sided without distinct sharp margins, apex blunt; antennomere XI only slightly paler than X, antennae almost unicolorous chestnut brown... C. siamensis Damaška & Konstantinov, 2016 . 9 Body circular; median lobe of aedeagus with blunt apex; spermathecal receptacle short.................................................................................................... C. sprynari Damaška & Aston, 2019 - Body oval; median lobe of aedeagus with apex pointed; spermathecal receptacle oval-elongate...................... 10 10 Median lobe of aedeagus much slenderer in apical third, then gradually narrowing towards apex, basal part wide and bulbose........................................................... C. fuanensis Ruan, Konstantinov & Damaška, 2022 - Median lobe of aedeagus slightly narrowing towards apex, almost parallel-sided, apex arrow-like, basal part not strongly widened ( Fig 3 )................................................................. C. castanea ( Gruev, 1985 ) 11 Median lobe of aedeagus narrower, narrowing towards apex; spermathecal duct with coils; metallic luster violet-blue; elytra almost impunctate; tibial spur length same or less than length of metatarsomere II.............................................................................................. C. luzonica Damaška, Mohagan & Fikáček, 2020 - Median lobe of aedeagus wider, parallel-sided; spermathecal duct without coils; elytra irregularly but distinctly punctate; metallic luster greenish; tibial spur longer than metatarsomere II... C. mindanaoensis Damaška, Mohagan & Fikáček, 2020