Figure 1. Sensilla distribution on terminal antennal segment of C. hemipterus.

Schematic maps of sensillum distribution on the inner (O₁) and outer (O₂) surfaces of the terminal antennal segment of C. hemipterus, flanked by Scanning Electron Microscopy (SEM) photographs of the corresponding regions in males and females to demonstrate a lack of sexual dimorphism. The map was derived from analysis of SEM images of 12 male and 9 female antennae. The position and relative distances between individual sensilla are roughly to scale, leaving room for minute individual variation and scale bars represent 20 µm. For C. lectularius comparison, see Steinbrecht and Müller [20].