Fossil Record 24(1): 117-127, doi: 10.5194/fr-24-117-2021
Two new species of the family Rhynchitidae (Coleoptera: Curculionoidea) from Eocene Baltic amber, with key to species and assumed trophic relationships
expand article infoAndris Bukejs, Andrei A Legalov
‡ Institute of Life Sciences and Technologies, Daugavpils University, Vienības 13, Daugavpils, 5401, Latvia
Open Access

Two new fossil species of Baltocar Kuschel, 1992 and Pseudomesauletes Legalov, 2001 (Curculionoidea:Rhynchitidae) are described from Eocene Baltic amber. Baltocar sontagae sp. nov. is similar toB. groehni Riedel, 2012 but differs in the shorter rostrum, tarsomere 1 shorterthan tarsomere 5 and 1.4× as long as tarsomere 2, longer elytra,and shorter body. Pseudomesauletes lobanovi sp. nov. is similar to P. culex (Scudder, 1893) and P. ibis(Wickham, 1912): the new species differs from P. culex in the larger eyes, longerpronotum, being 0.44× shorter than elytra, and slightly smaller bodysize; from P. ibis it differs in the smaller body size, rostrum shorter thanelytra, and weakly convex pronotum. This is the first record ofPseudomesauletes from Baltic amber and the sixth species of Baltocar. Keys to species of the genusBaltocar and to the Eocene species of the genus Pseudomesauletes are given. Assumed trophicrelationships of these fossil taxa are discussed (