Revision of theGonioctena flavoplagiata species-group (Coleoptera: Chrysomelidae: Chrysomelinae), with descriptions of two new species from China and Laos Author Cho, Hee-Wook Department of Biodiversity and Evolutionary Taxonomy, University of Wrocław, Przybyszewskiego 65, 51 - 148 Wrocław, Poland lampides@gmail.com Author Borowiec, Lech Department of Biodiversity and Evolutionary Taxonomy, University of Wrocław, Przybyszewskiego 65, 51 - 148 Wrocław, Poland lech.borowiec@uwr.edu.pl text Acta Entomologica Musei Nationalis Pragae 2016 2016-11-15 56 2 755 768 journal article 55917 10.5281/zenodo.5310352 7918db56-2267-401e-91c6-727d7afe8555 0374-1036 5310352 4B810B58-5BC7-4895-BE86-8F1EF4091635 Gonioctena ( Asiphytodecta ) flavoplagiata species-group Diagnosis. Body length 6.2–7.6 mm . Dorsum brown to blackish brown with two pairs of yellowish brown spots on elytra. Anterior margin of labrum with tooth-like projection.Antennae reaching pronotal base, with last four antennomeres strongly widened and flattened. Elytral surface mostly covered with irregular, coarse and large punctures except humeri, elytral suture and lateral margins. Aedeagus variable in shape, very thin or thick with narrow or broad apical process, setose apicolaterally. Spermatheca C-shaped and very thin. Key to the species of the Gonioctena flavoplagiata species-group 1 Venter largely black to dark brown. ............................................................................... 2 – Venter largely reddish-brown. .................. G . ( A. ) mausonensis Cho & Borowiec, 2016 2 Apical antennomere widely rounded at apex ( Figs 13, 19 , 25 ). ..................................... 3 – Apical antennomere rather truncate at apex ( Fig. 27 ). ... G . ( A. ) truncaticornis sp. nov. 3 Aedeagus strongly narrowed before short apical process ( Figs 20 , 23 ). ........................ 4 – Aedeagus moderately narrowed from apical 1/3 to apex ( Figs 14–17 ). ........................... ..................................................................................... G . ( A. ) eburoides ( Achard, 1924 ) 4 Apical process of aedeagus thin and elongate-oval ( Fig. 23 ). .... G . ( A. ) jindrai sp. nov. – Apical process of aedeagus very thin and parallel-sided ( Fig. 20 ). .................................. ................................................................................ G . ( A. ) flavoplagiata ( Jacoby, 1890 )