Abstract

LUGO-GARCIA, G. Antonio et al. White grubs species (coleoptera: scarabaeoidea) associated to corn in Ahome, Sinaloa, México. Agrociencia [online]. 2012, vol.46, n.3, pp.307-320. ISSN 2521-9766.

In some regions of the state of Sinaloa, México, it is considered that the larvae of Melonthidae coleoptera, known as white grub, are one of the principal rhizophagous pests of corn (Zeamays). The objective of the present study was to know the white grub species associated to the corn crop in the Valle del Carrizo, Sinaloa. Soil samplings were made from September of 2008 to March of 2009, and adults were collected from July to October of 2008, twice a week, with a funnel type black florescent light trap, installed in the center of the corn plot. In soil, Cyclocephala sinaloae and Phyllophaga sp. were identified, the former being the dominant species (98.94 %), with the largest larvae population in October. The light trap collected 61 198 specimens pertaining to eight species of Scarabaeidae. Cyclocephala sinaloae was the most abundant (71.67 %), followed by Oxygrylius ruginasus (26.89 %), Phyllophaga opaca (1.15 %) and Ph. cristagalli (0.2 %). The abundance of these species was higher in July (48.55 %), which coincided with the maximum rainfall registered. In addition, for the first time it was registered that the adults of C. sinaloae feed on guava fruits (Psidium guajava L.) during the morning.

Keywords : Phyllophaga; Cyclocephala; Zea mays.

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