Geniates barbatus - Yellow Beetle / Besouro-Amarelo (Kirby, 1818)
Coleoptera: Polyphaga: Scarabaeiformia: Scarabaeoidea: Scarabaeidae: Rutelinae: Geniatini
These beetles are found from northern Panama to central Chile and southern Argentina; this includes Brazil, where the subject portrayed was found. They are members of the order Coleoptera, suborder Polyphaga, infraorder Scarabeiformia, superfamily Scarabaeoidea, family Scarabaeidae, subfamily Rutelinae and tribe Geniatini.
The feeding habits of immature Geniates barbatus are unknown, but it is speculated that they feed on the roots of grasses (Poaceae) and other plants - as they are always found underground when in the larval phase - until entering the pupa stage and emerging from the ground as an adult, proceeding to mate and to lay the eggs underground.
The adult's hosts include Eucalyptus robustus (Sm.), E. tereticornis (Sm.) (Myrtaceae), and Cammellia sinensis (Kuntze) (Ternstroemiaceae, otherwise known popularly as "tea"). The adult was also seen defoliating other plants, like: Anacardium occidentale (L.) (Anacardiaceae) (cashew, "cajueiro"), Cocos nucifera (L.) (Arecaceae) (coconut palm, "coqueiro"), Eugenia pitanga ((O. Berg) Nied.) (Myrtaceae) (Surinam cherry, "pitangueira"), Mangifera indica (L.) (Anacardiaceae) (mango tree, "mangueira"), Rosa spp. (Rosaceae), Psidium guajava (L.) (Myrtaceae) (guava tree, "goiabeira") and Terminalia sp. (Combretaceae) (Anjos & Majer, 2003; Costa Lima, 1953; Silva et al., 1968).
The larvae of Geniatini seem to be more similar to Anoplognathini than to Rutelini or Anomalini.
Their habitats are gardens, pastures, forests, fields, weedy places and woods; they are mostly found buried underground where there are Poaceae growing.
Date: 17th of October, 2017 at 07:50:32pm.