Fig. 3. Antennal anatomy. (A) Longitudinal section through the two distal antennal
segments, the pedicel and the funiculus. The pedicel/funiculus joint, the
funicular hook and the funicular stalk are depicted. (B) Cross section through
the pedicel at the level of the pedicel/funiculus joint. (C) Detail from B
showing the medial (Med) and posterior (Post) groups of receptors, their
distal threads (T), the `V'-shaped sites to which the threads attach (V) and
the membrane (M) that suspends the flagellar hook in the pedicel. (D) Cross
section through the funiculus at the level of the insertion of the arista.
Connections between the funiculus and the arista (I) and between the three
sub-elements that make up the arista (II, III) are depicted. Scale bars, 50
µm (A,B,D) and 25 µm (C).
