Sit back after begging chap to find insect (7,6)
I believe the answer is:
praying mantis
'insect' is the definition.
(praying mantis is a kind of insect)
'sit back after begging chap' is the wordplay.
'sit back' becomes 'tis' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'after' is a charade indicator (letters next to each other).
'begging' becomes 'praying' ('pray' can be a synonym of 'beg').
'chap' becomes 'man' (I've seen this before).
'praying'+'man'='prayingman'
'tis' after 'prayingman' is 'PRAYING MANTIS'.
'to find' acts as a link.
Can you help me to learn more?
(Other definitions for praying mantis that I've seen before include "Rags in my paint (anag) -insect" , "Small creature" , "Large carnivorous insect" , "Pagan ministry (anag.)" , "Predatory insect" .)