Fig. 7
From: Ultrastructure of sensilla on antennae and maxillary palps in three Mesembrinellidae species
Scanning electron micrographs showing the cuticular surface of flagellum in both gender of Mesembrinella bicolor: a arista of female divided in three (I-III) segments (× 430), b arista of male divided in three (I-III) segments (× 500), c first flagellomere of female (× 2,300), d first flagellomere of male (× 1,300). Fn = first flagellomere; Mc = microtrichia; Tr = trichoidea; Ba = basiconic; Cl = clavate; Op = Olfactory pits