Oncocephala demesai is a species of beetle of the family Chrysomelidae. It is found in Togo.
Description Adults reach a length of about 5 mm. The head, pronotum and elytra are black with a dark brownish tinge, while the legs are dark brown and the antennae are mostly charcoal black.Calcetas, O.A., Staines, C.L., Adorada, J.R., Calilung, V.J., Caoili, B.L. & Jamias, S.B. 2021. Review of the genus Oncocephala Agassiz 1846 (Coleoptera: Chrysomelidae: Cassidinae: Oncocephalini) in Africa, excluding Madagascar. Journal of Insect Biodiversity 30(1): 1–54
Life history No host plant has been documented for this species.
Etymology The species is named after the Department of Agriculture Assistant Secretary for Operations Engr. Arnel V. De Mesa.Calcetas, O.A., Staines, C.L., Adorada, J.R., Calilung, V.J., Caoili, B.L. & Jamias, S.B. 2021. Review of the genus Oncocephala Agassiz 1846 (Coleoptera: Chrysomelidae: Cassidinae: Oncocephalini) in Africa, excluding Madagascar. Journal of Insect Biodiversity 30(1): 1–54
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