Type material of 42 species from 15 genera of Membracidae is housed at the Entomology Division of the Facultad de Ciencias Naturales y Museo of La Plata National University, collected mainly in Argentina (21) but also in Uruguay (8), Bolivia (3), Brazil (10), Ecuador (1) and Venezuela (1). The types listed herein correspond to species described by G. S. de Andrade (3 spp.), C. Berg (12 spp.), F. W. Goding (1 sp.), A. M. Marino de Remes Lenicov (25 spp), and S. H. McKamey (1 sp.). The collection contains 230 type specimens. Comparison of their original descriptions with the label information supports the existence of 20 holotypes, 13 allotypes, 156 paratypes, 5 lectotypes, 15 paralectotypes and 21 syntypes. Lectotype and paralectotypes of Cyphonia ancoralis Berg, Melusina rugifrons Berg, Smiliorhachis proxima Berg are designated, as well as syntypes of Acutalis variabilis Berg, Cyphonia bonaeriensis Berg, Cyphonia colenophora Berg, Darnis amangosi Berg, Darnis (Stictipelta) luisae Berg, Hebetica arechavaletae Goding, Pyranthe acaciae Berg and P. frustatoria Berg. The following information is given for each species: original names of the species, bibliographic references, type category, number of specimens, gender, Museo de La Plata code numbers, and transcription of data from labels (country, province, locality, date of collection, collector’s name, and hosts). Information about subsequent nomenclatural changes with corresponding references, the state of preservation of the specimens in each series and pictures of each Berg species is also provided.
Survey of the state of conservation of the Mylodon listai (Xenarthra-Mylodontidae) skin fragment from the Pleistocene of Argentina kept at the Museum of La Plata (Argentina)