Gonioctena koryeoensis (Coleoptera: Chrysomelidae: Chrysomelinae), a new species from Korea, with a description of immature stages Author Cho, Hee Wook Author Lee, Jong Eun text Zootaxa 2010 2438 52 60 journal article 10.5281/zenodo.194888 2d5476ba-adeb-4607-bf0e-54392a2dde1f 1175-5326 194888 Key to the species of the genus Gonioctena in the Korean Peninsula (modified from Cho & Lee 2008 ) 1. Posterior angles of pronotum with setigerous pores.................................................................................................... 2 - Posterior angles of pronotum without setigerous pores (Subgenus Brachyphytodecta ) ......... G. fulva (Motschulsky) 2. Anterior angles of pronotum with setigerous pores (Subgenus Sinomela ) ................................... G. aeneipennis Baly - Anterior angles of pronotum without setigerous pores (Subgenus Gonioctena ) ......................................................... 3 3. Antennae fully reaching the elytral humeri with seventh to tenth segments elongate, each 2–2.3 times longer than wide ........................................................................................................................................ G. gracilicornis (Kraatz) - Antennae never reaching the elytral humeri with seventh to tenth segments distinctly widened, each nearly as long as wide ......................................................................................................................................................................... 4 4. Ventral surface entirely or largely reddish to yellowish brown .................................................................................... 5 - Ventral surface entirely or largely black ..................................................................................................................... 6 5. Elytra with black spots.......................................................................................... G. koryeoensis Cho & Lee , sp. nov. - Elytra without black spots................................................................................................................ G . kamiyai Kimoto 6. Femora and tibiae entirely reddish brown; pronotum and elytra without distinct black spots, rarely with obscure black spots..................................................................................................................................................................... 7 - Femora and tibiae at least partly black, if entirely reddish brown, pronotum or elytra with distinct black spots ....... 8 7. Head almost entirely black; antennae yellowish brown with distal four to five segments piceous ............................... ........................................................................................................................... G . jacobsoni (Ogloblin et Medvedev) - Head yellowish brown with posterior portion black; antennae entirely yellowish brown .............. G . suwai Takizawa 8. Pronotum with a pair of triangular basal black markings; elytra reddish brown with five pairs of black spots; elytral suture black except for basal 1/4...................................................................................................... G . laeta Medvedev - Without above combination of characteristics............................................................................................................. 9 9. Antennae yellowish brown with distal four to five segments each apically darkened ............ G . viminalis (Linnaeus) - Antennae yellowish brown to brown with distal four to five segments black........................................................... 10 10. Elytra partly or entirely reddish brown, never entirely black, with or without black spots; tibiae black with median and apical portions largely reddish brown .................................................................................. G . coreana (Bechyné) - Elytra entirely black or reddish brown, without black spots; tibiae entirely black, sometimes with apical portion partly dark brown ............................................................................................................................ G . sibirica (Weise)