Small creature to remain in group (5,6)
I believe the answer is:
stick insect
'small creature' is the definition.
'stick insect' can be an answer for 'creature' (stick insect is a kind of animal). I'm unsure of the 'small' bit.
'remain in group' is the wordplay.
'remain' becomes 'stick' (both can mean to stay).
'group' becomes 'sect' (I've seen this in other clues).
'stick'+'in'+'sect'='STICK-INSECT'
'to' is the link.
Can you help me to learn more?
(Other definitions for stick insect that I've seen before include "creature hard to spot in tree" , "One well-camouflaged" , "Twiggy lookalike" , "Bug that's noted for camouflage" , "Six-footer resembling a twig" .)