Entomological Communications | VOL. 4

Visitation of African pineapple lily flowers (Eucomis autumnalis (Mill.) Chitt. and Eucomis comosa Houtt. ex. Wehrh.) by Japanese cockroaches

Publication Date Aug 30, 2022


Pineapple lilies Eucomis autumnalis (Mill.) Chitt. and Eucomis comosa Houtt. ex. Wehrh. are endemic herbaceous plants in southern Africa but are planted as ornamental bulbous plants globally. The flowers are known to be primarily pollinated by pompilid wasps in their native range. In a Japanese botanical garden, Blattella nipponica Asahina, 1963 cockroaches visited the inflorescences of the two Eucomis species, fed on the floral nectar, and used the comae (i.e., leaf-like tufts on the top of inflorescences) as physical shelters and transported the pollen, thereby resulting in a fruit set. Ants, flies, and beetles were also observed to visit the flowers but did not touch the anthers or stigmas. These observations suggest that ground-dwelling cockroaches can act as pollinators of Eucomis flowers in an ex-situ setting.


Eucomis Species Pompilid Wasps Floral Nectar Fruit Set Southern Africa Pollinators Of Flowers Native Range Endemic Plants Ornamental Plants Ornamental Bulbous Plants

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No potential conflict of interest was reported by the authors. The conception and design of the study, acquisition of data, analysis and interpretatio...

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