A

 

Document Type

Article

Publication Date

5-3-1983

First Page

15

Last Page

25

Abstract

Congruences in pilosity between two verified Hymenoptera/orchid associations: Campsoscolia ciliate/Ophrys speculum and Argogorytes sp./O. insectifera, and the suggested association Euce ra nigrilabris/O. scolopax were investigated using the scanning electron microscope. Morphological evidence. suggests that Ophrys flowers mimic the hair patterns of hymenopteran females, offering males copulatory stimuli and positioning them correctly at the labellum for pollination. Males are initially attracted olfactorily and visually at short distances. It is not believed to be the visual appearance of the hairs that is mimicked, but their ability to stimulate males tactilely at appropriate mechano/proprioceptive sites and by being distributed in optimal patterns on the flowers.

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