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Spigē′lian, denoting the lobulus spigelii, one of the lobes of the liver.

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.

Lobulus: the partly separated portion of the wings of some flies and of secondaries in some Hymenoptera: also used as = alula; q.v.

In addition to this large aperture, which is located on the lower part of the lobulus, there may be two other small perforations about 1.5 centimeters further up.

The liver is composed of four lobes, besides the small lobe, or lobulus spigelii.