The teleosts (e.g., herrings, trouts) comprise the largest group of living fishes today. The aim of the present study is to investigate and describe a new species of the primitive teleost Tharsis from the Late Jurassic. Tharsis is currently known by one species, Tharsis dubious, which is one of the most common fish in the Solnfohen limestone, Bavaria, Germany. A new species, Tharsis elleri, is described and assigned to the family Ascalaboidae within the new order Ascalaboidiformes.

New entimine weevil, Arostropsis perkovskyi Bukejs and Legalov, sp. nov. from the tribe Naupactini of subfamily Entiminae of the family Curculionidae is described from Late Eocene Rovno amber (Ukraine). The new species is similar to Arostropsis groehni Yunakov et Kirejtshuk, 2011 from Baltic amber. Arostropsis perkovskyi is the second species of the genus Arostropsis. It is the first record of the tribe Naupactini from Rovno amber. Composition of weevil subfamilies in Rovno amber is discussed.

Here, we report three new fossil rhopalosomatid wasp specimens from Dominican and Mexican amber. Rhopalosoma hispaniola Lohrmann sp. nov. is described and documented from Dominican amber by two separate inclusions – one of each sex. An additional fossil female Rhopalosoma is described and documented from Mexican amber. The new fossils do not only represent the first fossil records of an extant genus of this peculiar family but also the first records of the family in Dominican and Mexican amber.