Micro-CT to document the coffee bean weevil, araecerus fasciculatus (Coleoptera: Anthribidae), inside field-collected coffee berries (coffea canephora)

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Abstract

The coffee bean weevil, Araecerus fasciculatus (De Geer) (Coleoptera: Anthribidae), is a cosmopolitan insect with >100 hosts, and has been reported as a pest of stored coffee. During a study involving the coffee berry borer, we observed coffee bean weevils emerging from field-collected coffee berries and used micro-computerized tomography (micro-CT) scans to observe the insect inside the berry. Two eggs had eclosed inside the berry, resulting in observations of a newly eclosed adult beetle and a 5th instar larva, each feeding on one of the two seeds. This is the first time since 1775, when the insect was first described, that the insect has been observed inside a coffee berry.

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Alba-Alejandre, I., Alba-Tercedor, J., & Vega, F. E. (2018). Micro-CT to document the coffee bean weevil, araecerus fasciculatus (Coleoptera: Anthribidae), inside field-collected coffee berries (coffea canephora). Insects, 9(3). https://doi.org/10.3390/insects9030100

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