Fig. 4
From: Sexual dimorphism and morphological integration in the orchid bee brain
Euglossa dilemma males present enlarged visual regions involved in polarized light-based navigation. (A) Isometrically scaling with the remaining central brain, the ocellar synaptic plexi is sexually dimorphic, with an upshift in its relative size seen in males. (B) Controlling for the size of the compound eye and with a shared negative allometry between the sexes, males have a larger dorsal rim area.
