2023 年 129 巻 1 号 p. 573-578
Fossil winged ants (family Formicidae) are sometimes found in lacustrine deposits. In the Shiobara Group, however, only a fossil of a large wingless queen ant has been described. Two types of fossil winged ants belonging to the subfamily Formicinae are newly described here and identified as Lasius sp. and Camponotus sp.