Fig. 2.

Sexually dimorphic glomeruli in M. sexta. A, B, Confocal images of ALs from a male (A) and a female (B)M. sexta. In the male AL, the macroglomerular complex (MGC) resides at the entrance of the antennal nerve (AN), outside of the shell-like array of spheroidal “ordinary” glomeruli (G). Occupying a similar position in the female AL are the two LFGs. The lateral group of neuronal cell bodies (LC) appears in each section. C, 3-D reconstruction of a female AL showing the positions of the medLFG and latLFG from three different views. The top panel shows a frontal view, themiddle panel shows a back or posterior view, and thebottom panel shows a view of the LFGs along the axis of the antennal nerve. The medLFG is shown in light gray, and the latLFG is shown in black. D, Dorsal; M, medial; P, posterior. Scale bar, 50 μm.