Entomology definition of Alulae: Diptera; a pair of membranous scales above the
halteres, behind the root of the wing, one above or before the
other; the anterior attached to the wing and moving with it, the
posterior fastened to the thorax and stationary; see calyptra;
squama; squamula; lobulus; axillary lobe; aileron; scale;
tegulae: Coleoptera; a membranous appendage of the elytra which
prevents dislocation.