Photographs of Habit, floral traits, and oil-bees on oil-offering Dendrobium and Cucurbitaceae species in Malipo County, southern Yunnan. (IMAGE)

Science China Press

Photographs of Habit, floral traits, and oil-bees on oil-offering Dendrobium and Cucurbitaceae species in Malipo County, southern Yunnan.

Caption

 (A) Inflorescences of D. gibsonii. (B) Glandular hairs covering the labellum in D. chryseum. (C) A hand-section of the labellum, with the hairs stained with Sudan Ⅳ. (D) A male Ctenoplectra cornuta trying to enter a flower of D. denneanum that is occupied by another male bee (male symbol marked). (E-H) Male C. cornuta bees leaving the flowers of four Dendrobium species, each with pollinaria attached to their thorax (white arrowheads). Note the characterized hind legs of males (purple arrow). (I) A female C. cornuta collecting nectar, oil and pollen from Thladiantha subglobosa, noting a pollinarium left on the corolla (pink arrow). (J) A male C. cornuta collecting nectar from T. subglobosa. (K) Ctenoplectra mating on D. chryseum, the male with a pollinarium on its back is delivering floral secretion (pink arrow) which he collected from Dendrobium flowers to the female.

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