Entomology definition of Hamuli: Odonata; one or two pairs of hooked processes
projecting from the ventral surface of the 2d abdominal segment
of the male; usually termed genital hamules: in Hymenoptera;
minute hooks on the anterior margin of secondaries used to unite
them in flight with the inner margin of primaries: in tree
crickets, hook-like processes of the male genitalia.