Jordal, Bjarte H. 2012. “Phrixosoma Concavifrons – a Sexually Dimorphic Phrixosomatini (Coleoptera: Curculionidae) from the Udzungwa Mountains in Tanzania”. Zootaxa 3255 (1). Auckland, New Zealand:52–56. https://doi.org/10.11646/zootaxa.3255.1.3.