Ferreira, A.P. (1968). Contribution to the knowledge of cytology of two species of Brazilian scorpions, Opisthacanthus manauarensis Ferreira, 1967 (Scorpiones, Scorpionidae) and Bothriurus asper araguaiae (Scorpiones, Bothriuridae). Anais da Academia Brasileira de Ciências. 40(1): 97-99.
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Ferreira, A.P.
1968
Contribution to the knowledge of cytology of two species of Brazilian scorpions, Opisthacanthus manauarensis Ferreira, 1967 (Scorpiones, Scorpionidae) and Bothriurus asper araguaiae (Scorpiones, Bothriuridae).