Abstract
Abstract In the state of São Paulo, the main sugarcane producing region of the world, two species of scale insects have frequently occurred, Aclerda takahashii (Kuwana, 1932) (Hemiptera: Aclerdidae) and Saccharicoccus sacchari (Cockerell, 1895) (Hemiptera: Pseudococcidae). To map the distribution and abundance of these species, 17 sugarcane producing fields, distributed in six mesoregions in São Paulo, were evaluated in August 2017 and, January, February, June and July 2018 during the ripening phase. The study on the seasonality of these species, by the presence or absence of the scale insects during the phenological cycle of the plant, was conducted between August 2017 and July 2018 in two sugarcane producing fields in the municipality of Jaboticabal, São Paulo, Brazil. The presence of S. sacchari was found in all the analyzed locations, and A. takahashii in twelve. Both scale insects showed significant difference of infestation in the node’s region of the stems during the ripening phase in one of the studied locations. The aclerdid presented significant difference by infestation in one site during the ripening phase of the plant. The pseudococcid infested a greater number of nodes in the following phases of development; vegetative, grand growth and ripening in both studied areas, but it was in one site during the ripening phase that presented the greatest difference. Although the pink sugarcane mealybug was more abundant than A. takahashii in both studies, there were no patterns of relationships between the numbers of individuals to geographical locations and temperature.
Highlights
The distribution and abundance of the scale insects were analyzed in 17 sugarcane producing fields, distributed in six mesoregions in the state of São Paulo, Brazil (Figure 1)
Regarding the two analyzed sugarcane producing fields in Jaboticabal, the population of A. takahashii was more abundant in site 1, in March 2018, ripening phase
Saccharicoccus sacchari was found to be better distributed and infesting more nodes in the sugarcane fields in the state of São Paulo compared to A. takahashii
Summary
In Brazil 18 species of scale insects associated to sugarcane were reported, of which Aclerda takahashii (Kuwana, 1932) (Aclerdidae) and Saccharicoccus sacchari (Cockerell, 1895) (Pseudococcidae) has been the most widely distributed (Silva et al, 1968; Oliz and Wolff, 2014; Zhang et al, 2018).This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Brazilian Journal of Biology, 2023, vol 83, e250879 | https://doi.org/10.1590/1519-6984.250879Monteiro, G. G., Peronti, A. L. B. G., and Martinelli, N. M.
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