imago

The imago was a standard of special importance, bringing the emperor into a closer relationship with his troops. It bore a small bust of the emperor and was carried by the imaginifer. It developed over time and also would display portraits of other members of the ruling house. The aquila and the imago were in the special care of the first cohort.
Imago

The adult or reproductive stage of an insect.

Latin, meaning: image, likeness.
Found on http://archives.nd.edu/iii.htm

[
n] - (psychoanalysis) an idealized image of someone (usually a parent) formed in childhood 2. [n] - an adult insect produced after metamorphosis
Found on http://www.webdictionary.co.uk/definition.php?query=imago

The adult butterfly.
Found on http://www.butterfly-guide.co.uk/help/gloss.htm

Standard with the emperor's portrait.
Found on http://www.encyclo.co.uk/local/20764
I·ma'go noun ;
plural Imagoes . [ Latin See
Image .]
1. An image.
2. (Zoology) The final adult, and usually winged, state of an insect. See
Illust. of
Ant- lion , and
Army worm .
Found on http://www.encyclo.co.uk/webster/I/10

The sexually mature stage of an insect's life cycle. ... (09 Oct 1997) ...
Found on http://www.encyclo.co.uk/local/20973
noun an adult insect produced after metamorphosis
Found on https://www.encyclo.co.uk/local/20974

(ĭ-ma´go) pl. imagoes, ima´gines the adult form of an insect. in psychoanalysis, an idealized, unconscious mental image of a key person in one's early life.
Found on http://www.encyclo.co.uk/local/21001

• (n.) The final adult, and usually winged, state of an insect. See Illust. of Ant-lion, and Army worm. • (n.) An image.
Found on http://thinkexist.com/dictionary/meaning/imago/

(from the article `reproduction`) ...especially among those forms that undergo metamorphosis, a radical physical change. Butterflies, for instance, have a caterpillar stage (larva), a ... ...(Simuliidae), and of a few aquatic midges swim actively. Many pupae that lie in soil or in wood have developed spines in order to help them work .....
Found on http://www.britannica.com/eb/a-z/i/10

(from the article `Spitteler, Carl`) ...childhood idyll derived from his own experience; and Conrad der Leutnant (1898), a dramatically finished Novelle in which he approached the ...
Found on http://www.britannica.com/eb/a-z/i/10

Type: Term Pronunciation: i-mā′gō, i-maj′i-nēz Definitions: 1. The last stage of an insect after it has completed all its metamorphoses through the egg, larva, and pupa; the adult insect form. Synonyms: archetype2
Found on http://www.medilexicon.com/medicaldictionary.php?t=43600

In entomology, an imago is a fully developed adult form of an insect after it has passed through all the stages of metamorphosis.
Found on http://www.probertencyclopaedia.com/browse/BI.HTM

Sexually mature stage of an insect
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016550.html

In biology, the imago is the last stage an insect attains during its metamorphosis, its process of growth and development; it also is called the imaginal stage, the stage in which the insect attains maturity. It follows the final ecdysis of the immature instars. In a member of the Ametabola or Hemimetabola, in which metamorphosis is `incomplete`.....
Found on http://en.wikipedia.org/wiki/Imago

The adult insect.
Found on http://www.geog.ubc.ca/biodiversity/efauna/InsectGlossary.html

the adult stage of an insect
Found on https://insects.tamu.edu/fieldguide/glossary.htm

the adult insect
Found on http://www.kerbtier.de/Pages/Glossar/enGlossar.html

The terminal instar, or adult.
Found on http://www.ag.auburn.edu/enpl/courses/glossary.htm

the final or adult stage in the metamorphosis of an insect
Found on http://insectzoo.msstate.edu/Glossary/

idealized mental image of a person
Found on http://phrontistery.info/i.html

image, likeness.
Found on https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found