Väisänen, Rauno, Päivö Somerma, Mikko Kuussaari, and Marko Nieminen. 1991. “<i>Bryodema tuberculata</i> and <i>Psophus stridulus</i> In Southwestern Finland (Saltatoria, Acrididae)”. Entomologica Fennica 2 (1):27-32. https://doi.org/10.33338/ef.83505.