Fig. 10
From: Ultrastructure of sensilla on antennae and maxillary palps in three Mesembrinellidae species
Scanning electron micrographs showing the cuticular surface of flagellum of male of Mesembrinella semihyalina: a arista divided in two (I-II) segments (× 450); b first flagellomere (× 1,900). Fn = first flagellomere; Mc = microtrichia; Tr = trichoidea