Segarra-Carmona, Alejandro E., and Irma Cabrera-Asencio. “TOUMEYELLA PARVICORNIS (COCKERELL) (HEMIPTERA: COCCOIDEA: COCCIDAE): A NEW INVASIVE PEST OF PINE TREES IN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 94, no. 1-2 (January 1, 2010): 175-177. Accessed October 24, 2021. https://revistas.upr.edu/index.php/jaupr/article/view/2593.