Tailless animal concealed insect (5)

I believe the answer is:

aphid

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'insect' is the definition.
(aphid is a kind of insect)

'tailless animal concealed' is the wordplay.
'tailless animal' becomes 'ap' (I can't justify this - if you can you should believe this answer much more).
'concealed' becomes 'hid' ('hide' can be a synonym of 'conceal').
'ap'+'hid'='APHID'

Can you help me to learn more?

(Other definitions for aphid that I've seen before include "Small insect like greenfly" , "Greenfly etc" , "Fly" , "one living on juices" , "Horticultural pest" .)

I've seen this clue in The Hindu.

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