Baselga Fraga, Andrés2020-06-062020-06-062010Baselga A (2010) The mature larva of Gonioctena variabilis (Olivier, 1790) Coleoptera, Chrysomelidae, Chrysomelinae) and key to the larvae of the subgenus Spartoxena. ZooKeys 33: 19-27. https://doi.org/10.3897/zookeys.33.3331313-2989http://hdl.handle.net/10347/22904Mature larva of Gonioctena (Spartoxena) variabilis (Olivier, 1790) is described and illustrated for the first time, based on specimens collected on Genista scorpius (L.) DC. [Fabaceae] in central Spain. A key to known larvae of the subgenus Spartoxena is provided, and the diagnostic characters are illustrated. Diagnostic characters for the identifi cation of species within the subgenus Spartoxena Motschulsky, 1860 are number of dorsal tubercles of abdominal segments, shape of tarsal claw, shape of labrum and disposition of microtrichia of epipharynx. Notes on the distribution and host plant of G. variabilis are included.engThis is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are creditedhttps://creativecommons.org/licenses/by/3.0/ChrysomelidaeGonioctenaSpartoxenaGonioctena variabilisLarvaKeyjournal article10.3897/zookeys.33.333open access