What's the difference between holometabola and metabola?

Holometabola

Definition:

Example Sentences:

(1) Some general aspects of the concept of imaginal discs in the Holometabola are reevaluated.
(2) The Holometabola (insects with complete metamorphosis: beetles, wasps, flies, fleas, butterflies, lacewings, and others) is a monophyletic group that includes the majority of the world's animal species.
(3) The immunocytochemical study demonstrated significant differences among species belonging to Apterygota, Hemi-, and Holometabola in the number of neurons, the length and degree of branching of their axon, and the amount of immunoreactive peptide stored therein.
(4) The results also suggest that segments of the typically three-segmented larval antenna of Holometabola are not scape, pedicel, and one-segmented flagellum; at least segments 2 and 3 are of flagellar origin.
(5) Classical imaginal discs (invaginated and present also in pre-final larval instars) arose several times independently and were not present in the larvae of ancestral Holometabola.
(6) The dipteran 18S rDNA evolved rapidly, with over 3 times as many substitutions among the aligned sequences, and 2-3 times more unalignable nucleotides than other Holometabola, in violation of an insect-wide molecular clock.

Definition:

Example Sentences:

(1) Potential horsefly intermediate hosts collected in the enzootic area included Hybomitra rhombica osburni, H. tetrica, H. metabola, Chrysops noctifer pertinax and Atylotus incisuralis.