Pseudimatidium bicoloricornis (Pic, 1926) comb. nov. Demothispa bicoloricornis Pic, 1926a: 14 (original description). Type locality. Original type locality ‘Guyane Fr.ʼ specified by DESCARPENTRIES & VILLIERS (1959) to French Guyana: Saint-Laurent-du-Maroni based on the label data of the holotype. Type material examined. HOLOTYPE: glued, ‘ GUYANE FRANÇSE | St-Jean du Maroni | COLLECTION LE MOULT [w, p, cb] || coll Pic [w, hw by Pic, s] || type [y, hw by Pic, s] || TYPE [r, p, cb] || Museum Paris | Coll. M. Pic [b, p, cb] || bicoloricornis | n sp [w, hw by Pic, s]’ (MNHN). Remarks. When I was assembling the data for my previous paper on Imatidiini (SEKERKA 2014) I tentatively placed this species to Windsorispa Sekerka, 2014 because PIC (1926a) compared it to W. latifrons (Weise, 1910) and the type was on loan to another researcher. Last year I had opportunity to study the holotype and found that it in fact belongs to the genus Pseudimatidium Aslam, 1966 and is most similar to P. madoni (Pic, 1936), which differs in stronger punctation of elytra and pronotum. Distribution. French Guyana: Saint-Laurent-du-Maroni (DESCARPENTRIES & VILLIERS 1959).

Published as part of Sekerka, Lukáš, 2017, Taxonomic changes within Imatidiini and Hybosispini (Coleoptera: Chrysomelidae: Cassidinae), pp. 351-380 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 57 (2) on page 364, DOI: 10.1515/aemnp-2017-0081, http://zenodo.org/record/5316262