Figures 37–41 in Observations on Antennal Morphology in Diptera, with Particular Reference to the Articular Surfaces between Segments 2 and 3 in the Cyclorrhapha

Figures 37–41. Antennae of Pipunculidae. (37) Chalarus sp., segs. 1 and 2, after removal of seg. 3. (38) The same, part of distal articular surface of seg. 2. (39) The same, right seg. 3, with base of arista. (40) Tomosvaryella sp., right segs. 1 and 2, lateral view after removal of seg. 3. (41) The same, right seg. 3, with base of arista. bf, basal foramen of segment 3; bh, basal hollow; bu, pedicellar button; f, distal foramen of segment 2; sc, sacculus.